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AS276University of Texas System

United StatesRegistryARIN

As of 22nd October 2026, AS276 (University of Texas System), a network registered in the United States with ARIN, originates 1 IPv4 prefix covering 256 addresses. By IPv4 address space that makes it the 59,188th-largest of the 79,663 networks we see originating IPv4, and the 12,886th-largest of 18,476 in the United States. It is seen behind 2 upstream networks, most often AS16905 (LEARN) and AS14085 (LEARN), and in front of 10 downstream networks. None of its announcements have a valid RPKI ROA. 0% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS276 is seen behind, one and two hops out, drawn from real AS paths.

AS276Toward the internet core
Upstream graph for AS276: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS276University of Tex…This networkAS14085LEARNAS16905LEARNAS11164Internet2 I2PXAS293ESnetAS11537Internet2

Networks observed one and two hops upstream of AS276 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

24

adjacent networks

Upstreams
28%
Peers
1250%
Downstreams
1042%

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

Upstreams of AS276
NetworkCountryRelationshipPathsVantage pts
AS16905LEARNUSPeer912
AS14085LEARNUSPeer351

Prefixes

The largest blocks AS276 originates, widest first.

Largest prefixes originated by AS276
PrefixAddressesVisibility
192.88.12.0/242562/77

Routing health

How AS276'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%1

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%1

Prefix sizes

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS276 started or stopped in this period.

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