subnet.im

AS2381WiscNet

United StatesRegistryARINTypeEyeball

As of 26th September 2026, AS2381 (WiscNet), an access network registered in the United States with ARIN, originates 37 IPv4 prefixes covering 517k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 705th-largest of the 79,516 networks we see originating IPv4, and the 172nd-largest of 18,424 in the United States. It is seen behind 15 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 33 downstream networks. 15% of its announcements have 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

37

IPv6 prefixes

2

IPv4 addresses

517k

IPv6 /64s

4.3B

Upstream graph

The networks AS2381 is seen behind, one and two hops out, drawn from real AS paths.

AS2381Toward the internet core
Upstream graph for AS2381: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS2381WiscNetThis networkAS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS11164Internet2 I2PXAS137409GSL Networks Pty …AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS2152CENIC - CalREN

Networks observed one and two hops upstream of AS2381 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

269

adjacent networks

Upstreams
156%
Peers
22182%
Downstreams
3312%

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

Upstreams of AS2381
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer16,075118
AS1299Arelion (fka. Telia Carrier)SEPeer1,30157
AS3257GTT Communications Inc.USPeer80134
AS11164Internet2 I2PXUSPeer2827
AS137409GSL Networks Pty LTDAUPeer2492
AS49544i3D.net B.VNLPeer2002
AS293ESnetUSPeer1811
AS11537Internet2USPeer1801
AS35280F5 Networks SARLFRPeer1061
AS3303Swisscom (Schweiz) AGCHPeer961

Prefixes

All 39

The largest blocks AS2381 originates, widest first.

Largest prefixes originated by AS2381
PrefixAddressesVisibility
140.104.0.0/1665.5k81/81
140.189.0.0/1665.5k81/81
165.128.0.0/1665.5k81/81
170.125.0.0/1665.5k81/81
198.150.0.0/1665.5k81/81
205.213.0.0/1665.5k81/81
216.56.0.0/1665.5k81/81
144.89.0.0/1816.4k81/81
199.197.64.0/1816.4k81/81
143.109.64.0/198.2k81/81

Routing health

How AS2381'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

  • Valid15.4%6
  • Invalid0.0%0
  • No ROA84.6%33

Propagation

  • Globally propagated90% of full-feed peers or more100.0%39
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 37 prefixes

IPv6 — 2 prefixes

  • /324.3B × /6450.0%1
  • /4016.8M × /6450.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS2381 started or stopped in this period.

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