ASN AS2381 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS2381?

AS2381 is listed under WiscNet.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS2381 WiscNet | IPGeolocation.io

ASN Lookup Tool

WiscNet wiscnet.net

US 39 Routes

AS Data

AS2381

AS2381 – WiscNet

AS Number	2381
AS Name	WISCNET1-AS
Organization	WiscNet(wisc-z)
Country	US
Website	wiscnet.net
Number of IPv4 Routes	37
Number of IPv6 Routes	2
ASN type	ISP
Registry	ARIN
Date Allocated	1993-02-03

ASN Intelligence API for production workflows

Use ASN data for AS2381 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.56.252.0/23	AS2381	WiscNet	WiscNet	512
2001:4e0::/32	AS2381	WiscNet	WiscNet	~79×10²⁷
64.189.15.0/24	AS2381	WiscNet	APOG WISCONSINLUTHERAN	256
204.128.233.0/24	AS2381	WiscNet	Milwaukee County Federated Library System	256
204.128.238.0/24	AS2381	WiscNet	Milwaukee County Federated Library System	256
199.248.186.0/24	AS2381	WiscNet	City of Oshkosh	256
2620:11f:f000::/40	AS2381	WiscNet	Northeast Wisconsin Technical College	~309×10²⁴
199.233.84.0/24	AS2381	WiscNet	Milwaukee County Federated Library System	256
204.128.234.0/24	AS2381	WiscNet	Milwaukee County Federated Library System	256
204.128.241.0/24	AS2381	WiscNet	Milwaukee County Federated Library System	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       2381
ASName:         WISCNET1-AS
ASHandle:       AS2381
RegDate:        1993-02-03
Updated:        2024-02-28    
Ref:            https://rdap.arin.net/registry/autnum/2381


OrgName:        WiscNet
OrgId:          WISC-Z
Address:        605 Science Drive
City:           Madison
StateProv:      WI
PostalCode:     53711
Country:        US
RegDate:        2022-08-01
Updated:        2024-02-28
Ref:            https://rdap.arin.net/registry/entity/WISC-Z


OrgTechHandle: WN29-ORG-ARIN
OrgTechName:   WiscNet NIC
OrgTechPhone:  +1-608-442-6761 
OrgTechEmail:  nic@wiscnet.net
OrgTechRef:    https://rdap.arin.net/registry/entity/WN29-ORG-ARIN

OrgAbuseHandle: ABUSE8958-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-608-442-6761 
OrgAbuseEmail:  abuse@wiscnet.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE8958-ARIN

RAbuseHandle: ABUSE8958-ARIN
RAbuseName:   Abuse
RAbusePhone:  +1-608-442-6761 
RAbuseEmail:  abuse@wiscnet.net
RAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE8958-ARIN

RTechHandle: WN29-ORG-ARIN
RTechName:   WiscNet NIC
RTechPhone:  +1-608-442-6761 
RTechEmail:  nic@wiscnet.net
RTechRef:    https://rdap.arin.net/registry/entity/WN29-ORG-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS21738	Rozint	US
AS11062	MTCO Communications	US
AS393577	Tritan Development	US
AS6614	T-Mobile USA, Inc.	US
AS40627	RingCentral Inc	US
AS286	GTT Communications Inc.	US
AS13631	CITADEL ENTERPRISE AMERICAS LLC	US
AS14537	Continent 8 LLC	US
AS394673	Milwaukee Area Technical College	US
AS199524	G-Core Labs S.A.	LU

Upstreams

AS Number	Description	Country
AS8220	COLT Technology Services Group Limited	GB
AS9505	Chunghwa Telecom Co., Ltd.	TW
AS11537	Internet2	US
AS6939	Hurricane Electric LLC	US
AS286	GTT Communications Inc.	US
AS64289	Macarne.com	US
AS11164	Internet2	US
AS32621	Twin City VoIP, Inc.	US
AS293	ESnet	US
AS29838	Atlantic Metro Communications II, Inc.	US

Downstreams

AS Number	Description	Country
AS53355	Concordia University Wisconsin	US
AS33503	Medical College of Wisconsin	US
AS46103	University of Wisconsin Whitewater	US
AS396939	Fond du Lac Band of Lake Superior Chippewa	US
AS22137	Blood Center of Wisconsin, Inc.	US
AS3676	University of Iowa	US
AS394673	Milwaukee Area Technical College	US
AS400632	KUSD	US
AS19782	Indiana University	US
AS57	University of Minnesota	US