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AS396961Internet2

United StatesRegistryARIN

As of 10th November 2026, AS396961 (Internet2), a network registered in the United States with ARIN, originates 6 IPv4 prefixes covering 1.5k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 31,727th-largest of the 80,723 networks we see originating IPv4, and the 7,208th-largest of 18,750 in the United States. It is seen behind 3 upstream networks, most often AS396955 (Internet2) and AS11164 (Internet2 I2PX). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

6

IPv6 prefixes

6

IPv4 addresses

1.5k

IPv6 /64s

393k

Upstream graph

The networks AS396961 is seen behind, one and two hops out, drawn from real AS paths.

AS396961Toward the internet core
Upstream graph for AS396961: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS396961Internet2This networkAS11164Internet2 I2PXAS11537Internet2AS396955Internet2AS2152CENIC - CalRENAS2497Internet Initiati…AS293ESnetAS2153CENICAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS396961 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 AS396961
NetworkCountryRelationshipPathsVantage pts
AS396955Internet2USPeer636106
AS11164Internet2 I2PXUSPeer18030
AS11537Internet2USPeer122

Prefixes

The largest blocks AS396961 originates, widest first.

Largest prefixes originated by AS396961
PrefixAddressesVisibility
163.253.29.0/2425676/76
163.253.70.0/2425676/76
163.253.71.0/2425676/76
163.253.72.0/2425676/76
163.253.73.0/2425676/76
163.253.74.0/2425676/76
2001:468:1f16::/4865.5k × /6462/63
2001:468:2806::/4865.5k × /6462/63
2001:468:2807::/4865.5k × /6462/63
2001:468:2808::/4865.5k × /6462/63

Routing health

How AS396961'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

  • Valid100.0%12
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%12
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 6 prefixes

  • /4865.5k × /64100.0%6

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS396961 started or stopped in this period.

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