subnet.im

AS7015Comcast Cable Communications, LLC

United StatesRegistryARIN

As of 26th September 2026, AS7015 (Comcast Cable Communications, LLC), a network registered in the United States with ARIN, originates 120 IPv4 prefixes covering 47.1k addresses and 428 IPv6 prefixes. By IPv4 address space that makes it the 4,579th-largest of the 79,516 networks we see originating IPv4, and the 1,623rd-largest of 18,424 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 158 downstream networks. 95% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

120

IPv6 prefixes

428

IPv4 addresses

47.1k

IPv6 /64s

28M

Upstream graph

The networks AS7015 is seen behind, one and two hops out, drawn from real AS paths.

AS7015Toward the internet core
Upstream graph for AS7015: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7015Comcast Cable Com…This networkAS3356Lumen (Level 3)AS7922Comcast Cable Com…AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS7015 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

321

adjacent networks

Upstreams
21%
Peers
16150%
Downstreams
15849%

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

Upstreams of AS7015
NetworkCountryRelationshipPathsVantage pts
AS7922Comcast Cable Communications, LLCUSPeer42,962145
AS3356Lumen (Level 3)USPeer8,41560

Prefixes

All 548

The largest blocks AS7015 originates, widest first.

Largest prefixes originated by AS7015
PrefixAddressesVisibility
50.170.112.0/204.1k80/81
198.145.48.0/204.1k81/81
198.145.80.0/204.1k81/81
208.66.72.0/212k81/81
50.205.228.0/221k80/81
50.226.56.0/221k80/81
159.215.64.0/221k81/81
50.205.228.0/2351281/81
50.205.230.0/2351281/81
50.206.116.0/2351280/81

Routing health

How AS7015'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

  • Valid95.1%521
  • Invalid0.0%0
  • No ROA4.9%27

Propagation

  • Globally propagated90% of full-feed peers or more99.5%545
  • Partially propagated40% to 90%0.2%1
  • Seen by few peersUnder 40%0.4%2

Prefix sizes

IPv4 — 120 prefixes

IPv6 — 428 prefixes

  • /4865.5k × /64100.0%428

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn2001:559:74e::/4825th Sept 2026
  • Announced2001:559:87d9::/4824th Sept 2026
  • Withdrawn2001:559:87d9::/4822nd Sept 2026
  • Announced2001:559:8143::/4822nd Sept 2026
  • Announced2001:559:87d9::/4822nd Sept 2026
  • Withdrawn2001:559:203::/4821st Sept 2026
  • Withdrawn2001:559:459::/4821st Sept 2026
  • Withdrawn2001:559:87b9::/4821st Sept 2026
  • Withdrawn2001:559:c2e8::/4821st Sept 2026

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