subnet.im

AS7015Comcast Cable Communications, LLC

United StatesRegistryARIN

As of 11th November 2026, AS7015 (Comcast Cable Communications, LLC), a network registered in the United States with ARIN, originates 120 IPv4 prefixes covering 47.1k addresses and 419 IPv6 prefixes. By IPv4 address space that makes it the 4,637th-largest of the 80,733 networks we see originating IPv4, and the 1,646th-largest of 18,751 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 160 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

419

IPv4 addresses

47.1k

IPv6 /64s

27.5M

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: 6 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…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS1299Arelion (fka. Tel…AS6453TATA Communicatio…

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

326

adjacent networks

Upstreams
21%
Peers
16450%
Downstreams
16049%

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

Upstreams of AS7015
NetworkCountryRelationshipPathsVantage pts
AS7922Comcast Cable Communications, LLCUSPeer44,301138
AS3356Lumen (Level 3)USPeer9,69553

Prefixes

All 539

The largest blocks AS7015 originates, widest first.

Largest prefixes originated by AS7015
PrefixAddressesVisibility
50.170.112.0/204.1k75/76
198.145.48.0/204.1k76/76
198.145.80.0/204.1k76/76
208.66.72.0/212k76/76
50.205.228.0/221k75/76
50.226.56.0/221k75/76
159.215.64.0/221k76/76
50.205.228.0/2351276/76
50.205.230.0/2351276/76
50.206.116.0/2351275/76

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

  • Valid95.0%512
  • Invalid0.0%0
  • No ROA5.0%27

Propagation

  • Globally propagated90% of full-feed peers or more99.8%538
  • Partially propagated40% to 90%0.2%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 120 prefixes

IPv6 — 419 prefixes

  • /4865.5k × /64100.0%419

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Withdrawn2001:559:c2ad::/486th Nov 2026
  • Announced2001:559:87d9::/485th Nov 2026
  • Withdrawn2001:559:87d9::/483rd Nov 2026
  • Announced2001:559:c045::/482nd Nov 2026
  • Withdrawn2001:559:c045::/481st Nov 2026
  • Announced2001:559:c19b::/4831st Oct 2026
  • Withdrawn2001:559:c19b::/4831st Oct 2026
  • Announced2001:559:c39e::/4828th Oct 2026
  • Withdrawn2001:559:c39e::/4828th Oct 2026
  • Withdrawn2001:559:8069::/4827th Oct 2026
  • Withdrawn2001:559:c3ec::/4827th Oct 2026
  • Announced2001:559:85a4::/4824th Oct 2026

12 announced and 16 withdrawn in all; the most recent are shown.

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