ASN AS101 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS101?

AS101 is listed under University of Washington.

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.

AS101 University of Washington

University of Washington washington.edu

US 7 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	washington.edu
Number of IPv4 Routes	3
Number of IPv6 Routes	4
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1987-03-31

ASN Intelligence API for production workflows

Use ASN data for AS101 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2001:1860:4000::/34	AS101	University of Washington	Pacific Northwest Gigapop	~20×10²⁷
2001:1860:8000::/34	AS101	University of Washington	Pacific Northwest Gigapop	~20×10²⁷
209.124.176.0/21	AS101	University of Washington	Pacific Northwest Gigapop	2048
2001:1860::/32	AS101	University of Washington	Pacific Northwest Gigapop	~79×10²⁷
209.124.184.0/21	AS101	University of Washington	Pacific Northwest Gigapop	2048
2001:1860:c000::/34	AS101	University of Washington	Pacific Northwest Gigapop	~20×10²⁷
209.124.176.0/20	AS101	University of Washington	Pacific Northwest Gigapop	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


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

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

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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "101",
    "as_handle" : "AS101",
    "as_name" : "WASH-NSF-AS",
    "tech_contacts" : [ "UW-NOC-ARIN", "UW-NOC-ARIN" ],
    "abuse_contacts" : [ "UWSO-ARIN" ],
    "date_created" : "1987-03-31",
    "date_updated" : "2021-10-01",
    "source" : "https://rdap.arin.net/registry/autnum/101"
  } ],
  "organization" : {
    "handle" : "UWND-Z",
    "name" : "University of Washington",
    "address" : [ "4545 15th Ave NE", "Seattle", "WA", "98105", "US" ],
    "street" : "15th Ave Ne",
    "city" : "Seattle",
    "state" : "WA",
    "zip_code" : "98105",
    "country" : [ "US" ],
    "date_created" : "2020-05-20",
    "date_updated" : "2026-06-15",
    "source" : "https://rdap.arin.net/registry/entity/UWND-Z",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "UW-NOC-ARIN",
    "name" : "University of Washington Networks and Distributed",
    "email" : [ "uw-noc@uw.edu" ],
    "phone" : [ "+1-206-221-6000" ],
    "source" : "https://rdap.arin.net/registry/entity/UW-NOC-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "UWSO-ARIN",
    "name" : "University of Washington Security Operations",
    "email" : [ "abuse@uw.edu" ],
    "phone" : [ "+1-206-221-7000" ],
    "source" : "https://rdap.arin.net/registry/entity/UWSO-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS22335	Metropolitan Research and Education Network	US
AS10430	Washington State K 20 Telecommunications Network	US
AS20326	TeraSwitch Networks Inc.	US
AS401703	Ordinal Advisors LLC	US
AS393577	Tritan Development	US
AS4777	APNIC COLO Asia Pacific Network Information Centre	AU
AS3130	RGnet OU	EE
AS2497	Internet Initiative Japan Inc.	JP
AS293	ESnet	US
AS32361	UltraLight	US
AS58511	Anycast Holdings Pty Ltd	AU
AS53597	Hoyos Consulting LLC	US
AS16509	Amazon.com, Inc.	US
AS714	Apple Inc.	US
AS11548	Heritage University	US
AS400818	Ausra LLC	US
AS60326	0xDEADBEEF LTD	SC
AS58453	China Mobile International Limited	HK
AS7201	Network Edge LLC	US
AS11164	Internet2	US
AS53472	City of Kirkland Washington	US
AS27523	Kawaii Networks LLC	US
AS297	National Aeronautics and Space Administration	US
AS1828	Unitas Global	US
AS6360	University of Hawaii	US
AS65005	ASN block not managed by the RIPE NCC
AS3807	University of Montana	US
AS38022	REANNZ National Research and Education Network	NZ
AS13476	Montana State University	US
AS38158	PT. Cyberindo Aditama	ID
AS40272	Allen Institute	US
AS54429	Local Connectivity Lab	US
AS7497	CNIC CAS	CN
AS38136	Akari Networks Limited	HK
AS52025	ParadoxNetworks Limited	GB
AS4455	IX Reach Ltd	GB
AS3491	PCCW Global HK Limited	HK
AS6509	CANARIE Inc	CA
AS32913	Actual Broadband	US
AS24	National Aeronautics and Space Administration	US
AS9002	RETN Limited	GB
AS7774	University of Alaska	US
AS4474	TCT West, Inc.	US
AS11649	Gonzaga University	US
AS668	United States Department of Defense DoD	US
AS137367	PT iForte Solusi Infotek	ID
AS150289	Sunyz Experimental Global Network	HK
AS212317	Hetzner Online GmbH	DE
AS4775	Globe Telecom GMCR,INC	PH
AS35280	F5 Networks SARL	FR
AS2152	CENIC	US
AS3356	Level 3 Parent, LLC	US
AS49544	i3D.net B.V	NL
AS9299	Philippine Long Distance Telephone Co.	PH
AS6939	Hurricane Electric LLC	US
AS10242	US Internet Corp	US
AS2907	Research Organization of Information and Systems, National Institute of Informatics	JP
AS205329	Muilties Network	TW
AS852	TELUS Communications Inc.	CA
AS3428	ESnet	US

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
AS11649	Gonzaga University	US
AS11956	National Oceanic and Atmospheric Administration	US
AS14954	The Fred Hutchinson Cancer Research Center	US
AS53472	City of Kirkland Washington	US
AS3428	ESnet	US
AS11548	Heritage University	US
AS3807	University of Montana	US
AS39941	Pacific Wave	US
AS13476	Montana State University	US
AS73	University of Washington	US