subnet.im

AS1312Virginia Polytechnic Institute and State Univ.

United StatesRegistryARIN

As of 22nd October 2026, AS1312 (Virginia Polytechnic Institute and…), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 148k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 1,668th-largest of the 79,655 networks we see originating IPv4, and the 481st-largest of 18,475 in the United States. It is seen behind 2 upstream networks, most often AS174 (Cogent Communications, LLC) and AS40220 (Virginia Polytechnic Institute and…), and in front of 1 downstream network. 20% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 90% 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

5

IPv6 prefixes

5

IPv4 addresses

148k

IPv6 /64s

18M

Upstream graph

The networks AS1312 is seen behind, one and two hops out, drawn from real AS paths.

AS1312Toward the internet core
Upstream graph for AS1312: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1312Virginia Polytech…This networkAS174Cogent Communicat…AS40220Virginia Polytech…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS11164Internet2 I2PX

Networks observed one and two hops upstream of AS1312 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

8

adjacent networks

Upstreams
225%
Peers
563%
Downstreams
113%

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

Upstreams of AS1312
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer50692
AS40220Virginia Polytechnic Institute and State Univ.USPeer29160

Prefixes

The largest blocks AS1312 originates, widest first.

Largest prefixes originated by AS1312
PrefixAddressesVisibility
128.173.0.0/1665.5k76/77
198.82.0.0/1665.5k76/77
45.3.64.0/1816.4k76/77
192.70.187.0/2425676/77
192.122.175.0/2425668/77
2607:b400::/4016.8M × /6463/64
2001:468:ce0::/441M × /6463/64
2001:468:c80::/4865.5k × /6463/64
2607:b400:a00::/4865.5k × /6463/64
2607:b400:a02::/4865.5k × /6463/64

Routing health

How AS1312'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

  • Valid20.0%2
  • Invalid0.0%0
  • No ROA80.0%8

Propagation

  • Globally propagated90% of full-feed peers or more90.0%9
  • Partially propagated40% to 90%10.0%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 5 prefixes

  • /4016.8M × /6420.0%1
  • /441M × /6420.0%1
  • /4865.5k × /6460.0%3

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

  • Withdrawn198.82.247.0/246th Oct 2026

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