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AS177 University of Michigan | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

University of Michigan umich.edu

US 2 Routes

AS Data

AS177

AS177 – University of Michigan

AS Number	177
AS Name	UMICH-AS-1
Organization	University of Michigan(univer-118-z)
Country	US
Website	umich.edu
Number of IPv4 Routes	0
Number of IPv6 Routes	2
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1988-04-28

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2607:f018:fffe::/48	AS177	University of Michigan	University of Michigan Information and Technology Services	~1×10²⁴
2001:48a8:68fd::/48	AS177	University of Michigan	Merit Network Inc.	~1×10²⁴

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:       177
ASName:         UMICH-AS-1
ASHandle:       AS177
RegDate:        1988-04-28
Updated:        2020-01-14    
Ref:            https://rdap.arin.net/registry/autnum/177


OrgName:        University of Michigan
OrgId:          UNIVER-118-Z
Address:        IT Communications Services
Address:        4251 Plymouth Road, Suite 2-2200
City:           Ann Arbor
StateProv:      MI
PostalCode:     48105-3640
Country:        US
RegDate:        2020-01-08
Updated:        2020-01-08
Ref:            https://rdap.arin.net/registry/entity/UNIVER-118-Z


OrgTechHandle: UA11-ORG-ARIN
OrgTechName:   UMnet Administration
OrgTechPhone:  +1-734-647-4200 
OrgTechEmail:  umnet-admin-team@umich.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/UA11-ORG-ARIN

OrgAbuseHandle: IAI8-ARIN
OrgAbuseName:   IT Abuse Investigation
OrgAbusePhone:  +1-734-764-4357 
OrgAbuseEmail:  report-abuse@umich.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/IAI8-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
AS237	Merit Network Inc.	US

Upstreams

AS Number	Description	Country
AS237	Merit Network Inc.	US

Contacts

Email Contacts

umnet-admin-team@umich.edu

Abuse Contacts

report-abuse@umich.edu

Frequently Asked Questions

What is ASN AS177?

ASN AS177 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS177?

AS177 is listed under University of Michigan.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.