subnet.im

AS33662Comcast Cable Communications, LLC

United StatesRegistryARIN

As of 11th November 2026, AS33662 (Comcast Cable Communications, LLC), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 4.1k addresses and 102 IPv6 prefixes. By IPv4 address space that makes it the 17,380th-largest of the 80,743 networks we see originating IPv4, and the 4,864th-largest of 18,754 in the United States. It is seen behind 2 upstream networks, most often AS7922 (Comcast Cable Communications, LLC) and AS3356 (Lumen (Level 3)), and in front of 52 downstream networks. 98% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

16

IPv6 prefixes

102

IPv4 addresses

4.1k

IPv6 /64s

6.7M

Upstream graph

The networks AS33662 is seen behind, one and two hops out, drawn from real AS paths.

AS33662Toward the internet core
Upstream graph for AS33662: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS33662Comcast Cable Com…This networkAS3356Lumen (Level 3)AS7922Comcast Cable Com…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS1299Arelion (fka. Tel…AS6453TATA Communicatio…

Networks observed one and two hops upstream of AS33662 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

110

adjacent networks

Upstreams
22%
Peers
5651%
Downstreams
5247%

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

Upstreams of AS33662
NetworkCountryRelationshipPathsVantage pts
AS7922Comcast Cable Communications, LLCUSPeer9,873138
AS3356Lumen (Level 3)USPeer99951

Prefixes

All 118

The largest blocks AS33662 originates, widest first.

Largest prefixes originated by AS33662
PrefixAddressesVisibility
24.104.75.0/2425675/76
50.201.112.0/2425675/76
50.217.18.0/2425675/76
50.220.66.0/2425675/76
50.228.10.0/2425675/76
50.228.194.0/2425622/76
50.231.217.0/2425675/76
50.232.18.0/2425675/76
50.232.206.0/2425675/76
50.234.8.0/2425675/76

Routing health

How AS33662'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

  • Valid98.3%116
  • Invalid0.0%0
  • No ROA1.7%2

Propagation

  • Globally propagated90% of full-feed peers or more96.6%114
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.4%4

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 102 prefixes

  • /4865.5k × /64100.0%102

Recent changes

Announcements that started or stopped since 12th Oct 2026.

7 announced and 9 withdrawn in all; the most recent are shown.

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