diff --git a/management/status_checks.py b/management/status_checks.py
index e4996542..57fa9bc3 100755
--- a/management/status_checks.py
+++ b/management/status_checks.py
@@ -325,7 +325,7 @@ def run_network_checks(env, output):
 
 	from ipaddress import IPv6Address
 
-	rev_ip6 = ".".join(reversed(IPv6Address(env['PUBLIC_IPV6']).exploded.split(':')))
+	rev_ip6 = ".".join(reversed(IPv6Address(env['PUBLIC_IPV6']).exploded.replace(':', '')))
 	zen = query_dns(rev_ip6+'.zen.spamhaus.org', 'A', nxdomain=None)
 	evaluate_spamhaus_lookup(env['PUBLIC_IPV6'], 'IPv6', rev_ip6, output, zen)