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AS2900Arizona Tri University Network

United StatesRegistryARIN

As of 11th November 2026, AS2900 (Arizona Tri University Network), a network registered in the United States with ARIN, originates 20 IPv4 prefixes covering 346k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 898th-largest of the 80,747 networks we see originating IPv4, and the 223rd-largest of 18,752 in the United States. It is seen behind 3 upstream networks, most often AS62600 (Arizona Board of Regents) and AS22773 (Cox Communications Inc.). 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

20

IPv6 prefixes

2

IPv4 addresses

346k

IPv6 /64s

131k

Upstream graph

The networks AS2900 is seen behind, one and two hops out, drawn from real AS paths.

AS2900Toward the internet core
Upstream graph for AS2900: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2900Arizona Tri Unive…This networkAS13335Cloudflare, Inc.AS22773Cox Communication…AS62600Arizona Board of …AS2914NTT America, Inc.AS3356Lumen (Level 3)AS3257GTT Communication…AS1299Arelion (fka. Tel…AS174Cogent Communicat…

Networks observed one and two hops upstream of AS2900 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
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS2900
NetworkCountryRelationshipPathsVantage pts
AS62600Arizona Board of RegentsUSPeer1,060137
AS22773Cox Communications Inc.USPeer414113
AS13335Cloudflare, Inc.USPeer15276

Prefixes

The largest blocks AS2900 originates, widest first.

Largest prefixes originated by AS2900
PrefixAddressesVisibility
129.219.0.0/1665.5k75/76
149.169.0.0/1665.5k75/76
129.219.0.0/1732.8k75/76
129.219.128.0/1732.8k75/76
149.169.0.0/1732.8k75/76
149.169.128.0/1732.8k75/76
206.206.192.0/1816.4k75/76
209.147.128.0/1816.4k75/76
206.206.192.0/198.2k75/76
206.206.224.0/198.2k75/76

Routing health

How AS2900'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%22

Propagation

  • Globally propagated90% of full-feed peers or more100.0%22
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS2900 started or stopped in this period.

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