subnet.im

AS33654Comcast Cable Communications, LLC

United StatesRegistryARIN

As of 11th November 2026, AS33654 (Comcast Cable Communications, LLC), a network registered in the United States with ARIN, originates 16 IPv6 prefixes. It is seen behind 1 upstream network, most often AS7922 (Comcast Cable Communications, LLC), and in front of 14 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

0

IPv6 prefixes

16

IPv4 addresses

0

IPv6 /64s

1M

Upstream graph

The networks AS33654 is seen behind, one and two hops out, drawn from real AS paths.

AS33654Toward the internet core
Upstream graph for AS33654: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS33654Comcast Cable Com…This networkAS7922Comcast Cable Com…AS1299Arelion (fka. Tel…AS6453TATA Communicatio…

Networks observed one and two hops upstream of AS33654 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

30

adjacent networks

Upstreams
13%
Peers
1550%
Downstreams
1447%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS33654
NetworkCountryRelationshipPathsVantage pts
AS7922Comcast Cable Communications, LLCUSPeer1,640138

Prefixes

The largest blocks AS33654 originates, widest first.

Largest prefixes originated by AS33654
PrefixAddressesVisibility
2001:559:ba::/4865.5k × /6462/63
2001:559:bb::/4865.5k × /6462/63
2001:559:12b::/4865.5k × /6462/63
2001:559:24d::/4865.5k × /6462/63
2001:559:38f::/4865.5k × /6462/63
2001:559:3cf::/4865.5k × /6462/63
2001:559:7d7::/4865.5k × /6462/63
2001:559:8165::/4865.5k × /6462/63
2001:559:8208::/4865.5k × /6462/63
2001:559:8465::/4865.5k × /6462/63

Routing health

How AS33654's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%16
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%16
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 16 prefixes

  • /4865.5k × /64100.0%16

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS33654 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.