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AS3354University of Texas System

United StatesRegistryARIN

As of 23rd October 2026, AS3354 (University of Texas System), a network registered in the United States with ARIN, originates 14 IPv4 prefixes covering 395k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 814th-largest of the 79,652 networks we see originating IPv4, and the 206th-largest of 18,475 in the United States. It is seen behind 1 upstream network, most often AS6922 (Texas Department of Information…). 13% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 63% 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

14

IPv6 prefixes

2

IPv4 addresses

395k

IPv6 /64s

16.8M

Upstream graph

The networks AS3354 is seen behind, one and two hops out, drawn from real AS paths.

AS3354Toward the internet core
Upstream graph for AS3354: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3354University of Tex…This networkAS6922Texas Department …AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS3354 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS3354
NetworkCountryRelationshipPathsVantage pts
AS6922Texas Department of Information ResourcesUSPeer872140

Prefixes

The largest blocks AS3354 originates, widest first.

Largest prefixes originated by AS3354
PrefixAddressesVisibility
129.117.0.0/1665.5k77/77
198.213.0.0/1665.5k77/77
198.214.0.0/1665.5k77/77
206.77.0.0/1665.5k77/77
207.64.0.0/1665.5k77/77
207.80.0.0/1665.5k77/77
192.138.168.0/2425677/77
198.153.169.0/2425677/77
198.214.2.0/2425615/77
198.214.4.0/2425615/77

Routing health

How AS3354'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

  • Valid12.5%2
  • Invalid0.0%0
  • No ROA87.5%14

Propagation

  • Globally propagated90% of full-feed peers or more62.5%10
  • Partially propagated40% to 90%6.3%1
  • Seen by few peersUnder 40%31.3%5

Prefix sizes

IPv4 — 14 prefixes

IPv6 — 2 prefixes

  • /4016.8M × /6450.0%1
  • /4865.5k × /6450.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS3354 started or stopped in this period.

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