subnet.im

AS40220Virginia Polytechnic Institute and State Univ.

United StatesRegistryARIN

As of 22nd October 2026, AS40220 (Virginia Polytechnic Institute and…), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 1k addresses and 4 IPv6 prefixes. By IPv4 address space that makes it the 35,846th-largest of the 79,655 networks we see originating IPv4, and the 8,130th-largest of 18,475 in the United States. It is seen behind 15 upstream networks, most often AS174 (Cogent Communications, LLC) and AS11164 (Internet2 I2PX), and in front of 12 downstream networks. None of its announcements have a valid RPKI ROA. 50% 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

4

IPv6 prefixes

4

IPv4 addresses

1k

IPv6 /64s

4.6B

Upstream graph

The networks AS40220 is seen behind, one and two hops out, drawn from real AS paths.

AS40220Toward the internet core
Upstream graph for AS40220: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS40220Virginia Polytech…This networkAS174Cogent Communicat…AS6939Hurricane Electri…AS10490Georgia Institute…AS11164Internet2 I2PXAS11537Internet2AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS3257GTT Communication…AS2152CENIC - CalRENAS2497Internet Initiati…

Networks observed one and two hops upstream of AS40220 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

78

adjacent networks

Upstreams
1519%
Peers
5165%
Downstreams
1215%

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

Upstreams of AS40220
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer1,226130
AS11164Internet2 I2PXUSPeer1,16368
AS6939Hurricane Electric LLCUSPeer49562
AS10490Georgia Institute of TechnologyUSPeer39855
AS11537Internet2USPeer1722
AS24482SG.GSSGPeer613
AS7195EdgeUnoCOPeer443
AS49544i3D.net B.VNLPeer382
AS13786Seaborn (Seabras USA, LLC)USPeer361
AS35280F5 Networks SARLFRPeer203

Prefixes

The largest blocks AS40220 originates, widest first.

Largest prefixes originated by AS40220
PrefixAddressesVisibility
38.68.251.0/2425676/77
38.68.253.0/2425676/77
38.68.255.0/2425676/77
192.122.175.0/242568/77
2607:b400::/324.3B × /6464/64
2607:b400::/36268M × /6435/64
2001:468:c80::/418.4M × /6435/64
2001:468:cfe::/4865.5k × /6435/64

Routing health

How AS40220'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%8

Propagation

  • Globally propagated90% of full-feed peers or more50.0%4
  • Partially propagated40% to 90%37.5%3
  • Seen by few peersUnder 40%12.5%1

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 4 prefixes

  • /324.3B × /6425.0%1
  • /36268M × /6425.0%1
  • /418.4M × /6425.0%1
  • /4865.5k × /6425.0%1

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

No announcement by AS40220 started or stopped in this period.

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