subnet.im

AS7287AT&T Enterprises, LLC

United StatesRegistryARIN

As of 11th November 2026, AS7287 (AT&T Enterprises, LLC), a network registered in the United States with ARIN, originates 440 IPv4 prefixes covering 500k addresses and 149 IPv6 prefixes. By IPv4 address space that makes it the 731st-largest of the 80,747 networks we see originating IPv4, and the 179th-largest of 18,752 in the United States. It is seen behind 1 upstream network, most often AS7018 (AT&T Enterprises, LLC), and in front of 2 downstream networks. 94% of its announcements have a valid RPKI ROA; 3 are RPKI-invalid. 96% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

440

IPv6 prefixes

149

IPv4 addresses

500k

IPv6 /64s

860M

Upstream graph

The networks AS7287 is seen behind, one and two hops out, drawn from real AS paths.

AS7287Toward the internet core
Upstream graph for AS7287: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7287AT&T Enterprises,…This networkAS7018AT&T Enterprises,…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS7287 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

6

adjacent networks

Upstreams
117%
Peers
350%
Downstreams
233%

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

Upstreams of AS7287
NetworkCountryRelationshipPathsVantage pts
AS7018AT&T Enterprises, LLCUSPeer41,918138

Prefixes

All 589

The largest blocks AS7287 originates, widest first.

Largest prefixes originated by AS7287
PrefixAddressesVisibility
166.193.128.0/1732.8k76/76
166.197.128.0/1732.8k76/76
107.124.192.0/1816.4k76/76
144.60.0.0/1816.4k76/76
144.60.64.0/1816.4k76/76
70.143.128.0/198.2k76/76
107.112.128.0/198.2k76/76
107.112.160.0/198.2k76/76
107.239.96.0/198.2k76/76
107.250.128.0/198.2k76/76

Routing health

How AS7287'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

  • Valid94.4%556
  • Invalid0.5%3
  • No ROA5.1%30

Propagation

  • Globally propagated90% of full-feed peers or more95.6%563
  • Partially propagated40% to 90%0.7%4
  • Seen by few peersUnder 40%3.7%22

Prefix sizes

IPv4 — 440 prefixes

IPv6 — 149 prefixes

  • /3867.1M × /643.4%5
  • /4016.8M × /646.7%10
  • /418.4M × /649.4%14
  • /424.2M × /6426.2%39
  • /432.1M × /649.4%14
  • /441M × /6425.5%38
  • /45524k × /646.0%9
  • /47131k × /643.4%5
  • /4865.5k × /6410.1%15

Recent changes

Announcements that started or stopped since 12th Oct 2026.

52 announced and 54 withdrawn in all; the most recent are shown.

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