ASN Lookup Tool

University of Washington uw.edu US US 10 Routes

AS Data

AS101

AS101 – University of Washington

AS Number 101
AS Name WASH-NSF-AS
Organization University of Washington (uwnd-z)
Country US
Website uw.edu
Number of IPv4 Routes 5
Number of IPv6 Routes 5
ASN type EDUCATION
Registry ARIN
Date Allocated 1987-03-31

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IP Ranges

Route # IPs
2001:1860:4000::/34 ~20×10²⁷
2001:1860:8000::/34 ~20×10²⁷
207.231.240.0/20 4096
209.124.176.0/21 2048
198.32.195.0/24 256
2001:1860::/32 ~79×10²⁷
209.124.184.0/21 2048
2001:504:b::/48 ~1×10²⁴
2001:1860:c000::/34 ~20×10²⁷
209.124.176.0/20 4096

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:       101
ASName:         WASH-NSF-AS
ASHandle:       AS101
RegDate:        1987-03-31
Updated:        2021-10-01
Ref:            https://rdap.arin.net/registry/autnum/101


OrgName:        University of Washington
OrgId:          UWND-Z
Address:        4545 15th Ave NE
City:           Seattle
StateProv:      WA
PostalCode:     98105
Country:        US
RegDate:        2020-05-20
Updated:        2026-06-15
Ref:            https://rdap.arin.net/registry/entity/UWND-Z


OrgNOCHandle: UW-NOC-ARIN
OrgNOCName:   University of Washington Networks and Distributed
OrgNOCPhone:  +1-206-221-6000 
OrgNOCEmail:  uw-noc@uw.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/UW-NOC-ARIN

OrgTechHandle: UW-NOC-ARIN
OrgTechName:   University of Washington Networks and Distributed
OrgTechPhone:  +1-206-221-6000 
OrgTechEmail:  uw-noc@uw.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/UW-NOC-ARIN

OrgAbuseHandle: UWSO-ARIN
OrgAbuseName:   University of Washington Security Operations
OrgAbusePhone:  +1-206-221-7000 
OrgAbuseEmail:  abuse@uw.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/UWSO-ARIN

RTechHandle: UW-NOC-ARIN
RTechName:   University of Washington Networks and Distributed
RTechPhone:  +1-206-221-6000 
RTechEmail:  uw-noc@uw.edu
RTechRef:    https://rdap.arin.net/registry/entity/UW-NOC-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
AS22335 Metropolitan Research and Education Network US
AS9299 Philippine Long Distance Telephone Co. PH
AS10430 Washington State K 20 Telecommunications Network US
AS20326 TeraSwitch Networks Inc. US
AS401703 Ordinal Advisors LLC US
AS393577 Tritan Development US
AS6939 Hurricane Electric LLC US
AS10242 US Internet Corp US
AS2907 Research Organization of Information and Systems, National Institute of Informatics JP
AS4777 APNIC COLO Asia Pacific Network Information Centre AU
AS3130 RGnet OU EE
AS205329 Muilties Network TW
AS2497 Internet Initiative Japan Inc. JP
AS852 TELUS Communications Inc. CA
AS293 ESnet US
AS32361 UltraLight US
AS58511 Anycast Holdings Pty Ltd AU
AS53597 Hoyos Consulting LLC US
AS3428 ESnet US
AS16509 Amazon.com, Inc. US
AS714 Apple Inc. US
AS11548 Heritage University US
AS400818 Ausra LLC US
AS73 University of Washington US
AS7539 National Center for High performance Computing TW
AS14221 University of Washington US
AS7201 Network Edge LLC US
AS11164 Internet2 US
AS4193 State of Washington US
AS3701 University of Oregon US
AS8075 Microsoft Corporation US
AS53472 City of Kirkland Washington US
AS7575 Australian Academic and Research Network AU
AS45701 PT Internet Madju Abad Milenindo ID
AS297 National Aeronautics and Space Administration US
AS6360 University of Hawaii US
AS1828 Unitas Global US
AS65005 ASN block not managed by the RIPE NCC
AS3807 University of Montana US
AS13737 Interconnecx, LLC US
AS38022 REANNZ National Research and Education Network NZ
AS38001 NewMedia Express Pte Ltd SG
AS13476 Montana State University US
AS17200 Seattle Community College District US
AS24482 SG.GS SG
AS59105 Home NOC Operators Group JP
AS6423 Digital Fortress US
AS34927 iFog GmbH CH
AS40272 Allen Institute US
AS20473 The Constant Company, LLC US
AS54429 Local Connectivity Lab US
AS55685 PT Jala Lintas Media ID
AS7497 CNIC CAS CN
AS8849 Melbikomas UAB LT
AS11956 National Oceanic and Atmospheric Administration US
AS20119 ARROW DATACENTERS INC CA
AS394256 Tech Futures Interactive Inc. CA
AS52025 ParadoxNetworks Limited GB
AS36236 NetActuate, Inc US
AS18106 Viewqwest Pte Ltd SG

Upstreams

AS Number Description Country
AS65005
AS20326 TeraSwitch Networks Inc. US
AS9002 RETN Limited GB
AS11537 Internet2 US
AS6939 Hurricane Electric LLC US
AS11164 Internet2 US
AS174 Cogent Communications, LLC US
AS2907 Research Organization of Information and Systems, National Institute of Informatics JP
AS2497 Internet Initiative Japan Inc. JP
AS293 ESnet US
AS394256 Tech Futures Interactive Inc. CA
AS52025 ParadoxNetworks Limited GB
AS7575 Australian Academic and Research Network AU
AS3491 PCCW Global HK Limited HK
AS35179 Korbank S. A. PL
AS3356 Level 3 Parent, LLC US
AS137409 GSL Networks Pty LTD AU

Downstreams

AS Number Description Country
AS17200 Seattle Community College District US
AS14221 University of Washington US
AS65005
AS10430 Washington State K 20 Telecommunications Network US
AS40272 Allen Institute US
AS7774 University of Alaska US
AS44855 Aptitude Software Poland Sp. z o.o. PL
AS54429 Local Connectivity Lab US
AS19014 NORCOM US
AS4193 State of Washington US

Contacts

Email Contacts

uw-noc@uw.edu

Abuse Contacts

abuse@uw.edu

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Frequently Asked Questions

ASN AS101 is an Autonomous System Number used to identify a network for BGP internet routing.
AS101 is listed under University of Washington.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
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.