Home ASN LookupAS2381

AS2381 WISCNET1-AS - WiscNet

🇺🇸

ARINassigned

Announced Prefixes (BGP)

39total

37 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)513,536

Announced (BGP)516,864

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

1,000

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

1993-02-03

Announced Prefixes

(BGP)39

Prefix	RPKI	IRR	Last Seen
64.189.15.0/24	No ROA	ARINOther IRR	2026-10-11
140.104.0.0/16	No ROA	Other IRR	2026-10-11
140.189.0.0/16	Valid	Other IRR	2026-10-11
143.109.64.0/19	No ROA	Other IRR	2026-10-11
143.109.192.0/19	No ROA	Other IRR	2026-10-11
144.89.0.0/18	No ROA	Other IRR	2026-10-11
148.59.44.0/24	No ROA	Other IRR	2026-10-11
160.32.0.0/22	No ROA	Other IRR	2026-10-11
165.128.0.0/16	No ROA	Other IRR	2026-10-11
170.125.0.0/16	No ROA	Other IRR	2026-10-11

1-10 of 39

1 / 4

Allocated Prefixes

(RIR)32

Prefix	Country	RIR	Status
140.104.0.0/16	🇺🇸 US	ARIN	allocated
140.189.0.0/16	🇺🇸 US	ARIN	allocated
143.109.64.0/19	🇺🇸 US	ARIN	allocated
143.109.192.0/19	🇺🇸 US	ARIN	allocated
144.89.0.0/18	🇺🇸 US	ARIN	allocated
148.59.44.0/24	🇺🇸 US	ARIN	allocated
160.32.0.0/22	🇺🇸 US	ARIN	allocated
165.128.0.0/16	🇺🇸 US	ARIN	allocated
170.125.0.0/16	🇺🇸 US	ARIN	allocated
192.156.230.0/24	🇺🇸 US	ARIN	allocated

1-10 of 32

1 / 4

All 39 announced prefixes of AS2381 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS2381 hands its own prefixes to: transit providers, or peers at an exchange.

AS6939Hurricane Electric35
AS1299TWELVE99 Arelion Sweden AB4

Downstreams (30)

Networks whose own prefixes AS2381 passes on: usually its customers.

AS1736Marquette University79
AS103Northwestern University19
AS3128University Of Wisconsin System12
AS3136State Of WI Dept. Of Administration8
AS11500Milwaukee School Of Engineering8
AS395963WCAN8
AS33503Medical College Of Wisconsin7
AS14192Carthage College4
AS53355Concordia University Wisconsin4
AS3676University Of Iowa3
AS22971ST. VINCENT HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER OF ST. FRANCIS3
AS2041St. Norbert College2
AS19782Indiana University2
AS25979CITY OF MADISON2
AS36723Waukesha County2
AS47015Sacred Heart Hospital2
AS394316Altra Federal Credit Union2
AS394673Milwaukee Area Technical College2
AS57University Of Minnesota1
AS22066City Of Eau Claire1
AS22137Blood Center Of Wisconsin1
AS23301State Of Wisconsin Investment Board1
AS40347Eau Claire County1
AS53599Kenosha County1
AS55133St. Croix Central School District1
AS64243Moraine Park Technical College1
AS393257Lawrence University1
AS396939Fond Du Lac Band Of Lake Superior Chippewa1
AS400632KUSD1
AS401492Winding Rivers Library System1

Other adjacent networks (5)

Adjacent to AS2381 in the transit part of AS paths: peers, providers or customers.

AS40387University Of Illinois7
AS11537Internet26
AS26415VeriSign Global Registry Services4
AS3257GTT BACKBONE GTT Communications1
AS6327Shaw Communications1

ASPA

No ASPA

External Links

ARIN Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS2381 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/2381

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/2381" | jq