subnet.im

AS4473AT&T Enterprises, LLC

United StatesRegistryARIN

As of 29th September 2026, AS4473 (AT&T Enterprises, LLC), a network registered in the United States with ARIN, originates 32 IPv4 prefixes covering 78.3k addresses. By IPv4 address space that makes it the 2,824th-largest of the 79,607 networks we see originating IPv4, and the 905th-largest of 18,442 in the United States. It is seen behind 1 upstream network, most often AS7018 (AT&T Enterprises, LLC), and in front of 1 downstream network. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

32

IPv6 prefixes

0

IPv4 addresses

78.3k

IPv6 /64s

0

Upstream graph

The networks AS4473 is seen behind, one and two hops out, drawn from real AS paths.

AS4473Toward the internet core
Upstream graph for AS4473: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4473AT&T Enterprises,…This networkAS7018AT&T Enterprises,…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS4473 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

4

adjacent networks

Upstreams
125%
Peers
250%
Downstreams
125%

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

Upstreams of AS4473
NetworkCountryRelationshipPathsVantage pts
AS7018AT&T Enterprises, LLCUSPeer7,349147

Prefixes

All 32

The largest blocks AS4473 originates, widest first.

Largest prefixes originated by AS4473
PrefixAddressesVisibility
165.13.0.0/1665.5k82/82
151.107.0.0/204.1k82/82
207.140.220.0/221k82/82
207.140.216.0/2351282/82
12.17.241.0/2425682/82
12.29.116.0/2425682/82
12.29.117.0/2425682/82
12.29.118.0/2425682/82
12.29.119.0/2425682/82
12.71.77.0/2425682/82

Routing health

How AS4473'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%32

Propagation

  • Globally propagated90% of full-feed peers or more100.0%32
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 32 prefixes

Recent changes

Announcements that started or stopped since 30th Aug 2026.

No announcement by AS4473 started or stopped in this period.

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