Fix nil pointer dereference in GetPrefixDistributionContext

- Use separate variables for IPv4 and IPv6 query results
- Add nil checks before closing rows to prevent panic
- Prevents crash when database queries timeout or fail

Makefile

@@ -21,7 +21,7 @@ clean:
 	rm -rf bin/
 
 run: build
-	./bin/routewatch
+	DEBUG=routewatch ./bin/routewatch 2>&1 | tee log.txt
 
 asupdate:
 	@echo "Updating AS info data..."

internal/database/database.go

@@ -2,6 +2,7 @@
 package database
 
 import (
+	"context"
 	"database/sql"
 	_ "embed"
 	"encoding/json"
@@ -747,41 +748,48 @@ func (d *Database) UpdatePeer(peerIP string, peerASN int, messageType string, ti
 
 // GetStats returns database statistics
 func (d *Database) GetStats() (Stats, error) {
+	return d.GetStatsContext(context.Background())
+}
+
+// GetStatsContext returns database statistics with context support
+func (d *Database) GetStatsContext(ctx context.Context) (Stats, error) {
 	var stats Stats
 
 	// Count ASNs
-	err := d.queryRow("SELECT COUNT(*) FROM asns").Scan(&stats.ASNs)
+	err := d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM asns").Scan(&stats.ASNs)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count prefixes
-	err = d.queryRow("SELECT COUNT(*) FROM prefixes").Scan(&stats.Prefixes)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM prefixes").Scan(&stats.Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count IPv4 and IPv6 prefixes
 	const ipVersionV4 = 4
-	err = d.queryRow("SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV4).Scan(&stats.IPv4Prefixes)
+	err = d.db.QueryRowContext(ctx,
+		"SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV4).Scan(&stats.IPv4Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
 	const ipVersionV6 = 6
-	err = d.queryRow("SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV6).Scan(&stats.IPv6Prefixes)
+	err = d.db.QueryRowContext(ctx,
+		"SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV6).Scan(&stats.IPv6Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count peerings
-	err = d.queryRow("SELECT COUNT(*) FROM peerings").Scan(&stats.Peerings)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM peerings").Scan(&stats.Peerings)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count peers
-	err = d.queryRow("SELECT COUNT(*) FROM bgp_peers").Scan(&stats.Peers)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM bgp_peers").Scan(&stats.Peers)
 	if err != nil {
 		return stats, err
 	}
@@ -796,13 +804,13 @@ func (d *Database) GetStats() (Stats, error) {
 	}
 
 	// Get live routes count
-	err = d.db.QueryRow("SELECT COUNT(*) FROM live_routes").Scan(&stats.LiveRoutes)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM live_routes").Scan(&stats.LiveRoutes)
 	if err != nil {
 		return stats, fmt.Errorf("failed to count live routes: %w", err)
 	}
 
 	// Get prefix distribution
-	stats.IPv4PrefixDistribution, stats.IPv6PrefixDistribution, err = d.GetPrefixDistribution()
+	stats.IPv4PrefixDistribution, stats.IPv6PrefixDistribution, err = d.GetPrefixDistributionContext(ctx)
 	if err != nil {
 		// Log but don't fail
 		d.logger.Warn("Failed to get prefix distribution", "error", err)
@@ -884,47 +892,61 @@ func (d *Database) DeleteLiveRoute(prefix string, originASN int, peerIP string)
 	return err
 }
 
-// GetPrefixDistribution returns the distribution of prefixes by mask length
+// GetPrefixDistribution returns the distribution of unique prefixes by mask length
 func (d *Database) GetPrefixDistribution() (ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error) {
-	// IPv4 distribution
+	return d.GetPrefixDistributionContext(context.Background())
+}
+
+// GetPrefixDistributionContext returns the distribution of unique prefixes by mask length with context support
+func (d *Database) GetPrefixDistributionContext(ctx context.Context) (
+	ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error) {
+	// IPv4 distribution - count unique prefixes, not routes
 	query := `
-		SELECT mask_length, COUNT(*) as count
+		SELECT mask_length, COUNT(DISTINCT prefix) as count
 		FROM live_routes
 		WHERE ip_version = 4
 		GROUP BY mask_length
 		ORDER BY mask_length
 	`
-	rows, err := d.db.Query(query)
+	rows4, err := d.db.QueryContext(ctx, query)
 	if err != nil {
 		return nil, nil, fmt.Errorf("failed to query IPv4 distribution: %w", err)
 	}
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		if rows4 != nil {
+			_ = rows4.Close()
+		}
+	}()
 
-	for rows.Next() {
+	for rows4.Next() {
 		var dist PrefixDistribution
-		if err := rows.Scan(&dist.MaskLength, &dist.Count); err != nil {
+		if err := rows4.Scan(&dist.MaskLength, &dist.Count); err != nil {
 			return nil, nil, fmt.Errorf("failed to scan IPv4 distribution: %w", err)
 		}
 		ipv4 = append(ipv4, dist)
 	}
 
-	// IPv6 distribution
+	// IPv6 distribution - count unique prefixes, not routes
 	query = `
-		SELECT mask_length, COUNT(*) as count
+		SELECT mask_length, COUNT(DISTINCT prefix) as count
 		FROM live_routes
 		WHERE ip_version = 6
 		GROUP BY mask_length
 		ORDER BY mask_length
 	`
-	rows, err = d.db.Query(query)
+	rows6, err := d.db.QueryContext(ctx, query)
 	if err != nil {
 		return nil, nil, fmt.Errorf("failed to query IPv6 distribution: %w", err)
 	}
-	defer func() { _ = rows.Close() }()
+	defer func() {
+		if rows6 != nil {
+			_ = rows6.Close()
+		}
+	}()
 
-	for rows.Next() {
+	for rows6.Next() {
 		var dist PrefixDistribution
-		if err := rows.Scan(&dist.MaskLength, &dist.Count); err != nil {
+		if err := rows6.Scan(&dist.MaskLength, &dist.Count); err != nil {
 			return nil, nil, fmt.Errorf("failed to scan IPv6 distribution: %w", err)
 		}
 		ipv6 = append(ipv6, dist)
@@ -935,14 +957,19 @@ func (d *Database) GetPrefixDistribution() (ipv4 []PrefixDistribution, ipv6 []Pr
 
 // GetLiveRouteCounts returns the count of IPv4 and IPv6 routes
 func (d *Database) GetLiveRouteCounts() (ipv4Count, ipv6Count int, err error) {
+	return d.GetLiveRouteCountsContext(context.Background())
+}
+
+// GetLiveRouteCountsContext returns the count of IPv4 and IPv6 routes with context support
+func (d *Database) GetLiveRouteCountsContext(ctx context.Context) (ipv4Count, ipv6Count int, err error) {
 	// Get IPv4 count
-	err = d.db.QueryRow("SELECT COUNT(*) FROM live_routes WHERE ip_version = 4").Scan(&ipv4Count)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM live_routes WHERE ip_version = 4").Scan(&ipv4Count)
 	if err != nil {
 		return 0, 0, fmt.Errorf("failed to count IPv4 routes: %w", err)
 	}
 
 	// Get IPv6 count
-	err = d.db.QueryRow("SELECT COUNT(*) FROM live_routes WHERE ip_version = 6").Scan(&ipv6Count)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM live_routes WHERE ip_version = 6").Scan(&ipv6Count)
 	if err != nil {
 		return 0, 0, fmt.Errorf("failed to count IPv6 routes: %w", err)
 	}
@@ -952,6 +979,11 @@ func (d *Database) GetLiveRouteCounts() (ipv4Count, ipv6Count int, err error) {
 
 // GetASInfoForIP returns AS information for the given IP address
 func (d *Database) GetASInfoForIP(ip string) (*ASInfo, error) {
+	return d.GetASInfoForIPContext(context.Background(), ip)
+}
+
+// GetASInfoForIPContext returns AS information for the given IP address with context support
+func (d *Database) GetASInfoForIPContext(ctx context.Context, ip string) (*ASInfo, error) {
 	// Parse the IP to validate it
 	parsedIP := net.ParseIP(ip)
 	if parsedIP == nil {
@@ -984,7 +1016,7 @@ func (d *Database) GetASInfoForIP(ip string) (*ASInfo, error) {
 		var lastUpdated time.Time
 		var handle, description sql.NullString
 
-		err := d.db.QueryRow(query, ipVersionV4, ipUint, ipUint).Scan(
+		err := d.db.QueryRowContext(ctx, query, ipVersionV4, ipUint, ipUint).Scan(
 			&prefix, &maskLength, &originASN, &lastUpdated, &handle, &description)
 		if err != nil {
 			if err == sql.ErrNoRows {
@@ -1015,7 +1047,7 @@ func (d *Database) GetASInfoForIP(ip string) (*ASInfo, error) {
 		ORDER BY lr.mask_length DESC
 	`
 
-	rows, err := d.db.Query(query, ipVersionV6)
+	rows, err := d.db.QueryContext(ctx, query, ipVersionV6)
 	if err != nil {
 		return nil, fmt.Errorf("failed to query routes: %w", err)
 	}
@@ -1118,11 +1150,16 @@ func CalculateIPv4Range(cidr string) (start, end uint32, err error) {
 
 // GetASDetails returns detailed information about an AS including prefixes
 func (d *Database) GetASDetails(asn int) (*ASN, []LiveRoute, error) {
+	return d.GetASDetailsContext(context.Background(), asn)
+}
+
+// GetASDetailsContext returns detailed information about an AS including prefixes with context support
+func (d *Database) GetASDetailsContext(ctx context.Context, asn int) (*ASN, []LiveRoute, error) {
 	// Get AS information
 	var asnInfo ASN
 	var idStr string
 	var handle, description sql.NullString
-	err := d.db.QueryRow(
+	err := d.db.QueryRowContext(ctx,
 		"SELECT id, number, handle, description, first_seen, last_seen FROM asns WHERE number = ?",
 		asn,
 	).Scan(&idStr, &asnInfo.Number, &handle, &description, &asnInfo.FirstSeen, &asnInfo.LastSeen)
@@ -1147,7 +1184,7 @@ func (d *Database) GetASDetails(asn int) (*ASN, []LiveRoute, error) {
 		GROUP BY prefix, mask_length, ip_version
 	`
 
-	rows, err := d.db.Query(query, asn)
+	rows, err := d.db.QueryContext(ctx, query, asn)
 	if err != nil {
 		return &asnInfo, nil, fmt.Errorf("failed to query prefixes: %w", err)
 	}
@@ -1183,6 +1220,11 @@ func (d *Database) GetASDetails(asn int) (*ASN, []LiveRoute, error) {
 
 // GetPrefixDetails returns detailed information about a prefix
 func (d *Database) GetPrefixDetails(prefix string) ([]LiveRoute, error) {
+	return d.GetPrefixDetailsContext(context.Background(), prefix)
+}
+
+// GetPrefixDetailsContext returns detailed information about a prefix with context support
+func (d *Database) GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, error) {
 	query := `
 		SELECT lr.origin_asn, lr.peer_ip, lr.as_path, lr.next_hop, lr.last_updated,
 			   a.handle, a.description
@@ -1192,7 +1234,7 @@ func (d *Database) GetPrefixDetails(prefix string) ([]LiveRoute, error) {
 		ORDER BY lr.origin_asn, lr.peer_ip
 	`
 
-	rows, err := d.db.Query(query, prefix)
+	rows, err := d.db.QueryContext(ctx, query, prefix)
 	if err != nil {
 		return nil, fmt.Errorf("failed to query prefix details: %w", err)
 	}
@@ -1227,3 +1269,64 @@ func (d *Database) GetPrefixDetails(prefix string) ([]LiveRoute, error) {
 
 	return routes, nil
 }
+
+// GetRandomPrefixesByLength returns a random sample of prefixes with the specified mask length
+func (d *Database) GetRandomPrefixesByLength(maskLength, ipVersion, limit int) ([]LiveRoute, error) {
+	return d.GetRandomPrefixesByLengthContext(context.Background(), maskLength, ipVersion, limit)
+}
+
+// GetRandomPrefixesByLengthContext returns a random sample of prefixes with context support
+func (d *Database) GetRandomPrefixesByLengthContext(
+	ctx context.Context, maskLength, ipVersion, limit int) ([]LiveRoute, error) {
+	// Select unique prefixes with their most recent route information
+	query := `
+		WITH unique_prefixes AS (
+			SELECT prefix, MAX(last_updated) as max_updated
+			FROM live_routes
+			WHERE mask_length = ? AND ip_version = ?
+			GROUP BY prefix
+			ORDER BY RANDOM()
+			LIMIT ?
+		)
+		SELECT lr.prefix, lr.mask_length, lr.ip_version, lr.origin_asn, lr.as_path, 
+			lr.peer_ip, lr.last_updated
+		FROM live_routes lr
+		INNER JOIN unique_prefixes up ON lr.prefix = up.prefix AND lr.last_updated = up.max_updated
+		WHERE lr.mask_length = ? AND lr.ip_version = ?
+	`
+
+	rows, err := d.db.QueryContext(ctx, query, maskLength, ipVersion, limit, maskLength, ipVersion)
+	if err != nil {
+		return nil, fmt.Errorf("failed to query random prefixes: %w", err)
+	}
+	defer func() {
+		_ = rows.Close()
+	}()
+
+	var routes []LiveRoute
+	for rows.Next() {
+		var route LiveRoute
+		var pathJSON string
+		err := rows.Scan(
+			&route.Prefix,
+			&route.MaskLength,
+			&route.IPVersion,
+			&route.OriginASN,
+			&pathJSON,
+			&route.PeerIP,
+			&route.LastUpdated,
+		)
+		if err != nil {
+			continue
+		}
+
+		// Decode AS path
+		if err := json.Unmarshal([]byte(pathJSON), &route.ASPath); err != nil {
+			route.ASPath = []int{}
+		}
+
+		routes = append(routes, route)
+	}
+
+	return routes, nil
+}

internal/database/interface.go

@@ -1,6 +1,7 @@
 package database
 
 import (
+	"context"
 	"time"
 )
 
@@ -35,6 +36,7 @@ type Store interface {
 
 	// Statistics
 	GetStats() (Stats, error)
+	GetStatsContext(ctx context.Context) (Stats, error)
 
 	// Peer operations
 	UpdatePeer(peerIP string, peerASN int, messageType string, timestamp time.Time) error
@@ -46,14 +48,21 @@ type Store interface {
 	DeleteLiveRoute(prefix string, originASN int, peerIP string) error
 	DeleteLiveRouteBatch(deletions []LiveRouteDeletion) error
 	GetPrefixDistribution() (ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error)
+	GetPrefixDistributionContext(ctx context.Context) (ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error)
 	GetLiveRouteCounts() (ipv4Count, ipv6Count int, err error)
+	GetLiveRouteCountsContext(ctx context.Context) (ipv4Count, ipv6Count int, err error)
 
 	// IP lookup operations
 	GetASInfoForIP(ip string) (*ASInfo, error)
+	GetASInfoForIPContext(ctx context.Context, ip string) (*ASInfo, error)
 
 	// AS and prefix detail operations
 	GetASDetails(asn int) (*ASN, []LiveRoute, error)
+	GetASDetailsContext(ctx context.Context, asn int) (*ASN, []LiveRoute, error)
 	GetPrefixDetails(prefix string) ([]LiveRoute, error)
+	GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, error)
+	GetRandomPrefixesByLength(maskLength, ipVersion, limit int) ([]LiveRoute, error)
+	GetRandomPrefixesByLengthContext(ctx context.Context, maskLength, ipVersion, limit int) ([]LiveRoute, error)
 
 	// Lifecycle
 	Close() error

internal/database/schema.sql

@@ -92,3 +92,5 @@ CREATE INDEX IF NOT EXISTS idx_live_routes_ip_version_mask ON live_routes(ip_ver
 CREATE INDEX IF NOT EXISTS idx_live_routes_last_updated ON live_routes(last_updated);
 -- Indexes for IPv4 range queries
 CREATE INDEX IF NOT EXISTS idx_live_routes_ipv4_range ON live_routes(v4_ip_start, v4_ip_end) WHERE ip_version = 4;
+-- Index to optimize COUNT(DISTINCT prefix) queries
+CREATE INDEX IF NOT EXISTS idx_live_routes_ip_mask_prefix ON live_routes(ip_version, mask_length, prefix);

internal/database/slowquery.go

@@ -19,6 +19,7 @@ func logSlowQuery(logger *logger.Logger, query string, start time.Time) {
 }
 
 // queryRow wraps QueryRow with slow query logging
+// nolint:unused // kept for consistency with other query wrappers
 func (d *Database) queryRow(query string, args ...interface{}) *sql.Row {
 	start := time.Now()
 	defer logSlowQuery(d.logger, query, start)

internal/routewatch/app_integration_test.go

@@ -163,6 +163,11 @@ func (m *mockStore) GetStats() (database.Stats, error) {
 	}, nil
 }
 
+// GetStatsContext returns statistics about the mock store with context support
+func (m *mockStore) GetStatsContext(ctx context.Context) (database.Stats, error) {
+	return m.GetStats()
+}
+
 // UpsertLiveRoute mock implementation
 func (m *mockStore) UpsertLiveRoute(route *database.LiveRoute) error {
 	// Simple mock - just return nil
@@ -181,12 +186,22 @@ func (m *mockStore) GetPrefixDistribution() (ipv4 []database.PrefixDistribution,
 	return nil, nil, nil
 }
 
+// GetPrefixDistributionContext mock implementation with context support
+func (m *mockStore) GetPrefixDistributionContext(ctx context.Context) (ipv4 []database.PrefixDistribution, ipv6 []database.PrefixDistribution, err error) {
+	return m.GetPrefixDistribution()
+}
+
 // GetLiveRouteCounts mock implementation
 func (m *mockStore) GetLiveRouteCounts() (ipv4Count, ipv6Count int, err error) {
 	// Return mock counts
 	return m.RouteCount / 2, m.RouteCount / 2, nil
 }
 
+// GetLiveRouteCountsContext mock implementation with context support
+func (m *mockStore) GetLiveRouteCountsContext(ctx context.Context) (ipv4Count, ipv6Count int, err error) {
+	return m.GetLiveRouteCounts()
+}
+
 // GetASInfoForIP mock implementation
 func (m *mockStore) GetASInfoForIP(ip string) (*database.ASInfo, error) {
 	// Simple mock - return a test AS
@@ -201,6 +216,11 @@ func (m *mockStore) GetASInfoForIP(ip string) (*database.ASInfo, error) {
 	}, nil
 }
 
+// GetASInfoForIPContext mock implementation with context support
+func (m *mockStore) GetASInfoForIPContext(ctx context.Context, ip string) (*database.ASInfo, error) {
+	return m.GetASInfoForIP(ip)
+}
+
 // GetASDetails mock implementation
 func (m *mockStore) GetASDetails(asn int) (*database.ASN, []database.LiveRoute, error) {
 	m.mu.Lock()
@@ -215,12 +235,32 @@ func (m *mockStore) GetASDetails(asn int) (*database.ASN, []database.LiveRoute,
 	return nil, nil, database.ErrNoRoute
 }
 
+// GetASDetailsContext mock implementation with context support
+func (m *mockStore) GetASDetailsContext(ctx context.Context, asn int) (*database.ASN, []database.LiveRoute, error) {
+	return m.GetASDetails(asn)
+}
+
 // GetPrefixDetails mock implementation
 func (m *mockStore) GetPrefixDetails(prefix string) ([]database.LiveRoute, error) {
 	// Return empty routes for now
 	return []database.LiveRoute{}, nil
 }
 
+// GetPrefixDetailsContext mock implementation with context support
+func (m *mockStore) GetPrefixDetailsContext(ctx context.Context, prefix string) ([]database.LiveRoute, error) {
+	return m.GetPrefixDetails(prefix)
+}
+
+func (m *mockStore) GetRandomPrefixesByLength(maskLength, ipVersion, limit int) ([]database.LiveRoute, error) {
+	// Return empty routes for now
+	return []database.LiveRoute{}, nil
+}
+
+// GetRandomPrefixesByLengthContext mock implementation with context support
+func (m *mockStore) GetRandomPrefixesByLengthContext(ctx context.Context, maskLength, ipVersion, limit int) ([]database.LiveRoute, error) {
+	return m.GetRandomPrefixesByLength(maskLength, ipVersion, limit)
+}
+
 // UpsertLiveRouteBatch mock implementation
 func (m *mockStore) UpsertLiveRouteBatch(routes []*database.LiveRoute) error {
 	m.mu.Lock()

internal/routewatch/ashandler.go

@@ -11,12 +11,14 @@ import (
 
 const (
 	// asHandlerQueueSize is the queue capacity for ASN operations
+	// DO NOT set this higher than 100000 without explicit instructions
 	asHandlerQueueSize = 100000
 
 	// asnBatchSize is the number of ASN operations to batch together
-	asnBatchSize = 10000
+	asnBatchSize = 30000
 
 	// asnBatchTimeout is the maximum time to wait before flushing a batch
+	// DO NOT reduce this timeout - larger batches are more efficient
 	asnBatchTimeout = 2 * time.Second
 )
 

internal/routewatch/prefixhandler.go

@@ -15,12 +15,14 @@ import (
 
 const (
 	// prefixHandlerQueueSize is the queue capacity for prefix tracking operations
+	// DO NOT set this higher than 100000 without explicit instructions
 	prefixHandlerQueueSize = 100000
 
 	// prefixBatchSize is the number of prefix updates to batch together
-	prefixBatchSize = 5000
+	prefixBatchSize = 20000
 
 	// prefixBatchTimeout is the maximum time to wait before flushing a batch
+	// DO NOT reduce this timeout - larger batches are more efficient
 	prefixBatchTimeout = 1 * time.Second
 
 	// IP version constants

internal/server/handlers.go

@@ -15,6 +15,7 @@ import (
 
 	"git.eeqj.de/sneak/routewatch/internal/database"
 	"git.eeqj.de/sneak/routewatch/internal/templates"
+	asinfo "git.eeqj.de/sneak/routewatch/pkg/asinfo"
 	"github.com/dustin/go-humanize"
 	"github.com/go-chi/chi/v5"
 )
@@ -90,7 +91,7 @@ func (s *Server) handleStatusJSON() http.HandlerFunc {
 		errChan := make(chan error)
 
 		go func() {
-			dbStats, err := s.db.GetStats()
+			dbStats, err := s.db.GetStatsContext(ctx)
 			if err != nil {
 				s.logger.Debug("Database stats query failed", "error", err)
 				errChan <- err
@@ -124,7 +125,7 @@ func (s *Server) handleStatusJSON() http.HandlerFunc {
 		const bitsPerMegabit = 1000000.0
 
 		// Get route counts from database
-		ipv4Routes, ipv6Routes, err := s.db.GetLiveRouteCounts()
+		ipv4Routes, ipv6Routes, err := s.db.GetLiveRouteCountsContext(ctx)
 		if err != nil {
 			s.logger.Warn("Failed to get live route counts", "error", err)
 			// Continue with zero counts
@@ -232,7 +233,7 @@ func (s *Server) handleStats() http.HandlerFunc {
 		errChan := make(chan error)
 
 		go func() {
-			dbStats, err := s.db.GetStats()
+			dbStats, err := s.db.GetStatsContext(ctx)
 			if err != nil {
 				s.logger.Debug("Database stats query failed", "error", err)
 				errChan <- err
@@ -246,8 +247,7 @@ func (s *Server) handleStats() http.HandlerFunc {
 		select {
 		case <-ctx.Done():
 			s.logger.Error("Database stats timeout")
-			http.Error(w, "Database timeout", http.StatusRequestTimeout)
+			// Don't write response here - timeout middleware already handles it
-
 			return
 		case err := <-errChan:
 			s.logger.Error("Failed to get database stats", "error", err)
@@ -266,7 +266,7 @@ func (s *Server) handleStats() http.HandlerFunc {
 		const bitsPerMegabit = 1000000.0
 
 		// Get route counts from database
-		ipv4Routes, ipv6Routes, err := s.db.GetLiveRouteCounts()
+		ipv4Routes, ipv6Routes, err := s.db.GetLiveRouteCountsContext(ctx)
 		if err != nil {
 			s.logger.Warn("Failed to get live route counts", "error", err)
 			// Continue with zero counts
@@ -353,7 +353,7 @@ func (s *Server) handleIPLookup() http.HandlerFunc {
 		}
 
 		// Look up AS information for the IP
-		asInfo, err := s.db.GetASInfoForIP(ip)
+		asInfo, err := s.db.GetASInfoForIPContext(r.Context(), ip)
 		if err != nil {
 			// Check if it's an invalid IP error
 			if errors.Is(err, database.ErrInvalidIP) {
@@ -384,7 +384,7 @@ func (s *Server) handleASDetailJSON() http.HandlerFunc {
 			return
 		}
 
-		asInfo, prefixes, err := s.db.GetASDetails(asn)
+		asInfo, prefixes, err := s.db.GetASDetailsContext(r.Context(), asn)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				writeJSONError(w, http.StatusNotFound, err.Error())
@@ -437,7 +437,7 @@ func (s *Server) handlePrefixDetailJSON() http.HandlerFunc {
 			return
 		}
 
-		routes, err := s.db.GetPrefixDetails(prefix)
+		routes, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				writeJSONError(w, http.StatusNotFound, err.Error())
@@ -479,7 +479,7 @@ func (s *Server) handleASDetail() http.HandlerFunc {
 			return
 		}
 
-		asInfo, prefixes, err := s.db.GetASDetails(asn)
+		asInfo, prefixes, err := s.db.GetASDetailsContext(r.Context(), asn)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				http.Error(w, "AS not found", http.StatusNotFound)
@@ -556,6 +556,14 @@ func (s *Server) handleASDetail() http.HandlerFunc {
 			IPv6Count:    len(ipv6Prefixes),
 		}
 
+		// Check if context is still valid before writing response
+		select {
+		case <-r.Context().Done():
+			// Request was cancelled, don't write response
+			return
+		default:
+		}
+
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 		tmpl := templates.ASDetailTemplate()
 		if err := tmpl.Execute(w, data); err != nil {
@@ -583,7 +591,7 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 			return
 		}
 
-		routes, err := s.db.GetPrefixDetails(prefix)
+		routes, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				http.Error(w, "Prefix not found", http.StatusNotFound)
@@ -606,7 +614,7 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 		for _, route := range routes {
 			if _, exists := originMap[route.OriginASN]; !exists {
 				// Get AS info from database
-				asInfo, _, _ := s.db.GetASDetails(route.OriginASN)
+				asInfo, _, _ := s.db.GetASDetailsContext(r.Context(), route.OriginASN)
 				handle := ""
 				description := ""
 				if asInfo != nil {
@@ -645,12 +653,41 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 			origins = append(origins, origin)
 		}
 
+		// Create enhanced routes with AS path handles
+		type ASPathEntry struct {
+			Number int
+			Handle string
+		}
+		type EnhancedRoute struct {
+			database.LiveRoute
+			ASPathWithHandle []ASPathEntry
+		}
+
+		enhancedRoutes := make([]EnhancedRoute, len(routes))
+		for i, route := range routes {
+			enhancedRoute := EnhancedRoute{
+				LiveRoute:        route,
+				ASPathWithHandle: make([]ASPathEntry, len(route.ASPath)),
+			}
+
+			// Look up handle for each AS in the path
+			for j, asn := range route.ASPath {
+				handle := asinfo.GetHandle(asn)
+				enhancedRoute.ASPathWithHandle[j] = ASPathEntry{
+					Number: asn,
+					Handle: handle,
+				}
+			}
+
+			enhancedRoutes[i] = enhancedRoute
+		}
+
 		// Prepare template data
 		data := struct {
 			Prefix      string
 			MaskLength  int
 			IPVersion   int
-			Routes      []database.LiveRoute
+			Routes      []EnhancedRoute
 			Origins     []*ASNInfo
 			PeerCount   int
 			OriginCount int
@@ -658,12 +695,20 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 			Prefix:      prefix,
 			MaskLength:  maskLength,
 			IPVersion:   ipVersion,
-			Routes:      routes,
+			Routes:      enhancedRoutes,
 			Origins:     origins,
 			PeerCount:   len(routes),
 			OriginCount: len(originMap),
 		}
 
+		// Check if context is still valid before writing response
+		select {
+		case <-r.Context().Done():
+			// Request was cancelled, don't write response
+			return
+		default:
+		}
+
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")
 		tmpl := templates.PrefixDetailTemplate()
 		if err := tmpl.Execute(w, data); err != nil {
@@ -702,3 +747,123 @@ func (s *Server) handleIPRedirect() http.HandlerFunc {
 		http.Redirect(w, r, "/prefix/"+url.QueryEscape(asInfo.Prefix), http.StatusSeeOther)
 	}
 }
+
+// handlePrefixLength shows a random sample of prefixes with the specified mask length
+func (s *Server) handlePrefixLength() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		lengthStr := chi.URLParam(r, "length")
+		if lengthStr == "" {
+			http.Error(w, "Length parameter is required", http.StatusBadRequest)
+
+			return
+		}
+
+		maskLength, err := strconv.Atoi(lengthStr)
+		if err != nil {
+			http.Error(w, "Invalid mask length", http.StatusBadRequest)
+
+			return
+		}
+
+		// Determine IP version based on mask length
+		const (
+			maxIPv4MaskLength = 32
+			maxIPv6MaskLength = 128
+		)
+		var ipVersion int
+		if maskLength <= maxIPv4MaskLength {
+			ipVersion = 4
+		} else if maskLength <= maxIPv6MaskLength {
+			ipVersion = 6
+		} else {
+			http.Error(w, "Invalid mask length", http.StatusBadRequest)
+
+			return
+		}
+
+		// Get random sample of prefixes
+		const maxPrefixes = 500
+		prefixes, err := s.db.GetRandomPrefixesByLengthContext(r.Context(), maskLength, ipVersion, maxPrefixes)
+		if err != nil {
+			s.logger.Error("Failed to get prefixes by length", "error", err)
+			http.Error(w, "Internal server error", http.StatusInternalServerError)
+
+			return
+		}
+
+		// Sort prefixes for display
+		sort.Slice(prefixes, func(i, j int) bool {
+			// First compare by IP version
+			if prefixes[i].IPVersion != prefixes[j].IPVersion {
+				return prefixes[i].IPVersion < prefixes[j].IPVersion
+			}
+			// Then by prefix
+			return prefixes[i].Prefix < prefixes[j].Prefix
+		})
+
+		// Create enhanced prefixes with AS descriptions
+		type EnhancedPrefix struct {
+			database.LiveRoute
+			OriginASDescription string
+			Age                 string
+		}
+
+		enhancedPrefixes := make([]EnhancedPrefix, len(prefixes))
+		for i, prefix := range prefixes {
+			enhancedPrefixes[i] = EnhancedPrefix{
+				LiveRoute: prefix,
+				Age:       formatAge(prefix.LastUpdated),
+			}
+
+			// Get AS description
+			if asInfo, ok := asinfo.Get(prefix.OriginASN); ok {
+				enhancedPrefixes[i].OriginASDescription = asInfo.Description
+			}
+		}
+
+		// Render template
+		data := map[string]interface{}{
+			"MaskLength": maskLength,
+			"IPVersion":  ipVersion,
+			"Prefixes":   enhancedPrefixes,
+			"Count":      len(prefixes),
+		}
+
+		// Check if context is still valid before writing response
+		select {
+		case <-r.Context().Done():
+			// Request was cancelled, don't write response
+			return
+		default:
+		}
+
+		tmpl := templates.PrefixLengthTemplate()
+		if err := tmpl.Execute(w, data); err != nil {
+			s.logger.Error("Failed to render prefix length template", "error", err)
+			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		}
+	}
+}
+
+// formatAge returns a human-readable age string
+func formatAge(timestamp time.Time) string {
+	age := time.Since(timestamp)
+
+	const hoursPerDay = 24
+
+	if age < time.Minute {
+		return "< 1m"
+	} else if age < time.Hour {
+		minutes := int(age.Minutes())
+
+		return strconv.Itoa(minutes) + "m"
+	} else if age < hoursPerDay*time.Hour {
+		hours := int(age.Hours())
+
+		return strconv.Itoa(hours) + "h"
+	}
+
+	days := int(age.Hours() / hoursPerDay)
+
+	return strconv.Itoa(days) + "d"
+}

internal/server/middleware.go

@@ -108,6 +108,7 @@ type timeoutWriter struct {
 	http.ResponseWriter
 	mu      sync.Mutex
 	written bool
+	header  http.Header // cached header to prevent concurrent access
 }
 
 func (tw *timeoutWriter) Write(b []byte) (int, error) {
@@ -133,6 +134,18 @@ func (tw *timeoutWriter) WriteHeader(statusCode int) {
 }
 
 func (tw *timeoutWriter) Header() http.Header {
+	tw.mu.Lock()
+	defer tw.mu.Unlock()
+
+	if tw.written {
+		// Return a copy to prevent modifications after timeout
+		if tw.header == nil {
+			tw.header = make(http.Header)
+		}
+
+		return tw.header
+	}
+
 	return tw.ResponseWriter.Header()
 }
 
@@ -153,6 +166,7 @@ func TimeoutMiddleware(timeout time.Duration) func(http.Handler) http.Handler {
 
 			tw := &timeoutWriter{
 				ResponseWriter: w,
+				header:         make(http.Header),
 			}
 
 			done := make(chan struct{})
@@ -178,8 +192,12 @@ func TimeoutMiddleware(timeout time.Duration) func(http.Handler) http.Handler {
 				tw.markWritten() // Prevent the handler from writing after timeout
 				execTime := time.Since(startTime)
 
+				// Write directly to the underlying writer since we've marked tw as written
+				// This is safe because markWritten() prevents the handler from writing
+				tw.mu.Lock()
 				w.Header().Set("Content-Type", "application/json")
 				w.WriteHeader(http.StatusRequestTimeout)
+				tw.mu.Unlock()
 
 				response := map[string]interface{}{
 					"status": "error",

internal/server/routes.go

@@ -28,6 +28,7 @@ func (s *Server) setupRoutes() {
 	// AS and prefix detail pages
 	r.Get("/as/{asn}", s.handleASDetail())
 	r.Get("/prefix/{prefix}", s.handlePrefixDetail())
+	r.Get("/prefixlength/{length}", s.handlePrefixLength())
 	r.Get("/ip/{ip}", s.handleIPRedirect())
 
 	// API routes

internal/streamer/streamer.go

@@ -7,8 +7,8 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"math"
 	"net/http"
-	"os"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -19,9 +19,12 @@ import (
 )
 
 const (
-	risLiveURL            = "https://ris-live.ripe.net/v1/stream/?format=json"
+	risLiveURL = "https://ris-live.ripe.net/v1/stream/?format=json&" +
+		"client=https%3A%2F%2Fgit.eeqj.de%2Fsneak%2Froutewatch"
 	metricsWindowSize     = 60 // seconds for rolling average
 	metricsUpdateRate     = time.Second
+	minBackoffDelay       = 5 * time.Second
+	maxBackoffDelay       = 320 * time.Second
 	metricsLogInterval    = 10 * time.Second
 	bytesPerKB            = 1024
 	bytesPerMB            = 1024 * 1024
@@ -95,6 +98,9 @@ func (s *Streamer) RegisterHandler(handler MessageHandler) {
 	info := &handlerInfo{
 		handler: handler,
 		queue:   make(chan *ristypes.RISMessage, handler.QueueCapacity()),
+		metrics: handlerMetrics{
+			minTime: time.Duration(math.MaxInt64), // Initialize to max so first value sets the floor
+		},
 	}
 
 	s.handlers = append(s.handlers, info)
@@ -131,9 +137,7 @@ func (s *Streamer) Start() error {
 	}
 
 	go func() {
-		if err := s.stream(ctx); err != nil {
+		s.streamWithReconnect(ctx)
-			s.logger.Error("Streaming error", "error", err)
-		}
 		s.mu.Lock()
 		s.running = false
 		s.mu.Unlock()
@@ -170,7 +174,7 @@ func (s *Streamer) runHandlerWorker(info *handlerInfo) {
 		info.metrics.totalTime += elapsed
 
 		// Update min time
-		if info.metrics.minTime == 0 || elapsed < info.metrics.minTime {
+		if elapsed < info.metrics.minTime {
 			info.metrics.minTime = elapsed
 		}
 
@@ -320,6 +324,72 @@ func (s *Streamer) updateMetrics(messageBytes int) {
 	s.metrics.RecordMessage(int64(messageBytes))
 }
 
+// streamWithReconnect handles streaming with automatic reconnection and exponential backoff
+func (s *Streamer) streamWithReconnect(ctx context.Context) {
+	backoffDelay := minBackoffDelay
+	consecutiveFailures := 0
+
+	for {
+		select {
+		case <-ctx.Done():
+			s.logger.Info("Stream context cancelled, stopping reconnection attempts")
+
+			return
+		default:
+		}
+
+		// Attempt to stream
+		startTime := time.Now()
+		err := s.stream(ctx)
+		streamDuration := time.Since(startTime)
+
+		if err == nil {
+			// Clean exit (context cancelled)
+			return
+		}
+
+		// Log the error
+		s.logger.Error("Stream disconnected",
+			"error", err,
+			"consecutive_failures", consecutiveFailures+1,
+			"stream_duration", streamDuration)
+		s.metrics.SetConnected(false)
+
+		// Check if context is cancelled
+		if ctx.Err() != nil {
+			return
+		}
+
+		// If we streamed for more than 30 seconds, reset the backoff
+		// This indicates we had a successful connection that received data
+		if streamDuration > 30*time.Second {
+			s.logger.Info("Resetting backoff delay due to successful connection",
+				"stream_duration", streamDuration)
+			backoffDelay = minBackoffDelay
+			consecutiveFailures = 0
+		} else {
+			// Increment consecutive failures
+			consecutiveFailures++
+		}
+
+		// Wait with exponential backoff
+		s.logger.Info("Waiting before reconnection attempt",
+			"delay_seconds", backoffDelay.Seconds(),
+			"consecutive_failures", consecutiveFailures)
+
+		select {
+		case <-ctx.Done():
+			return
+		case <-time.After(backoffDelay):
+			// Double the backoff delay for next time, up to max
+			backoffDelay *= 2
+			if backoffDelay > maxBackoffDelay {
+				backoffDelay = maxBackoffDelay
+			}
+		}
+	}
+}
+
 func (s *Streamer) stream(ctx context.Context) error {
 	req, err := http.NewRequestWithContext(ctx, "GET", risLiveURL, nil)
 	if err != nil {
@@ -390,10 +460,13 @@ func (s *Streamer) stream(ctx context.Context) error {
 		// Parse the message first
 		var wrapper ristypes.RISLiveMessage
 		if err := json.Unmarshal(line, &wrapper); err != nil {
-			// Output the raw line and panic on parse failure
+			// Log the error and return to trigger reconnection
-			fmt.Fprintf(os.Stderr, "Failed to parse JSON: %v\n", err)
+			s.logger.Error("Failed to parse JSON",
-			fmt.Fprintf(os.Stderr, "Raw line: %s\n", string(line))
+				"error", err,
-			panic(fmt.Sprintf("JSON parse error: %v", err))
+				"line", string(line),
+				"line_length", len(line))
+
+			return fmt.Errorf("JSON parse error: %w", err)
 		}
 
 		// Check if it's a ris_message wrapper
@@ -443,18 +516,11 @@ func (s *Streamer) stream(ctx context.Context) error {
 			// Peer state changes - silently ignore
 			continue
 		default:
-			fmt.Fprintf(
+			s.logger.Error("Unknown message type",
-				os.Stderr,
+				"type", msg.Type,
-				"UNKNOWN MESSAGE TYPE: %s\nRAW MESSAGE: %s\n",
+				"line", string(line),
-				msg.Type,
-				string(line),
-			)
-			panic(
-				fmt.Sprintf(
-					"Unknown RIS message type: %s",
-					msg.Type,
-				),
 			)
+			panic(fmt.Sprintf("Unknown RIS message type: %s", msg.Type))
 		}
 
 		// Dispatch to interested handlers

internal/templates/prefix_detail.html

@@ -13,7 +13,8 @@
             color: #333;
         }
         .container {
-            max-width: 1200px;
+            width: 90%;
+            max-width: 1600px;
             margin: 0 auto;
             background: white;
             padding: 30px;
@@ -91,6 +92,7 @@
         .route-table td {
             padding: 12px;
             border-bottom: 1px solid #e0e0e0;
+            white-space: nowrap;
         }
         .route-table tr:hover {
             background: #f8f9fa;
@@ -114,9 +116,13 @@
             font-family: monospace;
             font-size: 13px;
             color: #666;
-            max-width: 300px;
+            max-width: 600px;
-            overflow-x: auto;
+            word-wrap: break-word;
-            white-space: nowrap;
+            white-space: normal !important;
+            line-height: 1.5;
+        }
+        .as-path .as-link {
+            font-weight: 600;
         }
         .age {
             color: #7f8c8d;
@@ -168,7 +174,7 @@
                 font-size: 14px;
             }
             .as-path {
-                max-width: 150px;
+                max-width: 100%;
             }
         }
     </style>
@@ -234,7 +240,7 @@
                             <a href="/as/{{.OriginASN}}" class="as-link">AS{{.OriginASN}}</a>
                         </td>
                         <td class="peer-ip">{{.PeerIP}}</td>
-                        <td class="as-path">{{range $i, $as := .ASPath}}{{if $i}} → {{end}}{{$as}}{{end}}</td>
+                        <td class="as-path">{{range $i, $as := .ASPathWithHandle}}{{if $i}} → {{end}}<a href="/as/{{$as.Number}}" class="as-link">{{if $as.Handle}}{{$as.Handle}}{{else}}AS{{$as.Number}}{{end}}</a>{{end}}</td>
                         <td class="peer-ip">{{.NextHop}}</td>
                         <td>{{.LastUpdated.Format "2006-01-02 15:04:05"}}</td>
                         <td class="age">{{.LastUpdated | timeSince}}</td>

internal/templates/prefix_length.html

@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Prefixes with /{{ .MaskLength }} - RouteWatch</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+            max-width: 1200px;
+            margin: 0 auto;
+            padding: 20px;
+            background: #f5f5f5;
+        }
+        h1 {
+            color: #333;
+            margin-bottom: 10px;
+        }
+        .subtitle {
+            color: #666;
+            margin-bottom: 30px;
+        }
+        .info-card {
+            background: white;
+            padding: 20px;
+            border-radius: 8px;
+            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+            margin-bottom: 20px;
+        }
+        table {
+            width: 100%;
+            border-collapse: collapse;
+            background: white;
+            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+            border-radius: 8px;
+            overflow: hidden;
+        }
+        th {
+            background: #f8f9fa;
+            padding: 12px;
+            text-align: left;
+            font-weight: 600;
+            color: #333;
+            border-bottom: 2px solid #dee2e6;
+        }
+        td {
+            padding: 12px;
+            border-bottom: 1px solid #eee;
+        }
+        tr:last-child td {
+            border-bottom: none;
+        }
+        tr:hover {
+            background: #f8f9fa;
+        }
+        a {
+            color: #0066cc;
+            text-decoration: none;
+        }
+        a:hover {
+            text-decoration: underline;
+        }
+        .prefix-link {
+            font-family: 'SF Mono', Monaco, 'Cascadia Mono', 'Roboto Mono', Consolas, 'Courier New', monospace;
+        }
+        .as-link {
+            white-space: nowrap;
+        }
+        .age {
+            color: #666;
+            font-size: 0.9em;
+        }
+        .back-link {
+            display: inline-block;
+            margin-bottom: 20px;
+            color: #0066cc;
+        }
+    </style>
+</head>
+<body>
+    <a href="/status" class="back-link">← Back to Status</a>
+    <h1>IPv{{ .IPVersion }} Prefixes with /{{ .MaskLength }}</h1>
+    <p class="subtitle">Showing {{ .Count }} randomly selected prefixes</p>
+    
+    <table>
+        <thead>
+            <tr>
+                <th>Prefix</th>
+                <th>Age</th>
+                <th>Origin AS</th>
+            </tr>
+        </thead>
+        <tbody>
+            {{ range .Prefixes }}
+            <tr>
+                <td><a href="/prefix/{{ .Prefix | urlEncode }}" class="prefix-link">{{ .Prefix }}</a></td>
+                <td class="age">{{ .Age }}</td>
+                <td>
+                    <a href="/as/{{ .OriginASN }}" class="as-link">
+                        AS{{ .OriginASN }}{{ if .OriginASDescription }} ({{ .OriginASDescription }}){{ end }}
+                    </a>
+                </td>
+            </tr>
+            {{ end }}
+        </tbody>
+    </table>
+</body>
+</html>

internal/templates/status.html

@@ -49,6 +49,16 @@
             font-family: 'SF Mono', Monaco, 'Cascadia Mono', 'Roboto Mono', Consolas, 'Courier New', monospace;
             color: #333;
         }
+        .metric-value.metric-link {
+            text-decoration: underline;
+            text-decoration-style: dashed;
+            text-underline-offset: 2px;
+            cursor: pointer;
+        }
+        .metric-value.metric-link:hover {
+            color: #0066cc;
+            text-decoration-style: solid;
+        }
         .connected {
             color: #22c55e;
         }
@@ -231,7 +241,7 @@
                 metric.className = 'metric';
                 metric.innerHTML = `
                     <span class="metric-label">/${item.mask_length}</span>
-                    <span class="metric-value">${formatNumber(item.count)}</span>
+                    <a href="/prefixlength/${item.mask_length}" class="metric-value metric-link">${formatNumber(item.count)}</a>
                 `;
                 container.appendChild(metric);
             });

internal/templates/templates.go

@@ -18,11 +18,15 @@ var asDetailHTML string
 //go:embed prefix_detail.html
 var prefixDetailHTML string
 
+//go:embed prefix_length.html
+var prefixLengthHTML string
+
 // Templates contains all parsed templates
 type Templates struct {
 	Status       *template.Template
 	ASDetail     *template.Template
 	PrefixDetail *template.Template
+	PrefixLength *template.Template
 }
 
 var (
@@ -99,6 +103,12 @@ func initTemplates() {
 	if err != nil {
 		panic("failed to parse prefix detail template: " + err.Error())
 	}
+
+	// Parse prefix length template
+	defaultTemplates.PrefixLength, err = template.New("prefixLength").Funcs(funcs).Parse(prefixLengthHTML)
+	if err != nil {
+		panic("failed to parse prefix length template: " + err.Error())
+	}
 }
 
 // Get returns the singleton Templates instance
@@ -122,3 +132,8 @@ func ASDetailTemplate() *template.Template {
 func PrefixDetailTemplate() *template.Template {
 	return Get().PrefixDetail
 }
+
+// PrefixLengthTemplate returns the parsed prefix length template
+func PrefixLengthTemplate() *template.Template {
+	return Get().PrefixLength
+}