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AS11481University of Texas Rio Grande Valley

United StatesRegistryARIN

As of 11th November 2026, AS11481 (University of Texas Rio Grande Valley), a network registered in the United States with ARIN, originates 15 IPv4 prefixes covering 147k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,724th-largest of the 80,747 networks we see originating IPv4, and the 503rd-largest of 18,752 in the United States. It is seen behind 2 upstream networks, most often AS6922 (Texas Department of Information…) and AS276 (University of Texas System), 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

15

IPv6 prefixes

1

IPv4 addresses

147k

IPv6 /64s

65.5k

Upstream graph

The networks AS11481 is seen behind, one and two hops out, drawn from real AS paths.

AS11481Toward the internet core
Upstream graph for AS11481: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS11481University of Tex…This networkAS276University of Tex…AS6922Texas Department …AS14085LEARNAS16905LEARNAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS11481 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
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS11481
NetworkCountryRelationshipPathsVantage pts
AS6922Texas Department of Information ResourcesUSPeer1,395137
AS276University of Texas SystemUSPeer362

Prefixes

The largest blocks AS11481 originates, widest first.

Largest prefixes originated by AS11481
PrefixAddressesVisibility
129.113.0.0/1665.5k76/76
129.113.0.0/1732.8k76/76
129.113.128.0/1732.8k76/76
67.207.0.0/198.2k76/76
67.207.16.0/204.1k76/76
67.207.0.0/2351276/76
67.207.2.0/2351276/76
67.207.4.0/2351276/76
67.207.12.0/2351276/76
67.207.14.0/2351276/76

Routing health

How AS11481'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%16

Propagation

  • Globally propagated90% of full-feed peers or more100.0%16
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 15 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS11481 started or stopped in this period.

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