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AS73
WASHINGTON-AS - University of Washington Announcing routesAS nameWASHINGTON-AS
OrganisationUniversity of Washington
Registry (RIR)ARIN
HandleAS73
RangeAS73
Registered05 May 1986
Last changed02 Oct 2021
10IPv4 prefixes
1IPv6 prefixes
1Upstreams
1Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS101 | WASH-NSF-AS - University of Washington | 570 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS64247 | UW-RESEARCH - University of Washington | 228 |
IPv4 prefixes (10)
IPv6 prefixes (1)
RPKI-validate all prefixes of AS73
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | University of Washington | UWND-Z | 4545 15th Ave NE, Seattle, WA, 98105, United States | |
| abuse | University of Washington Security Operations | UWSO-ARIN | [email protected], [email protected], +1-206-221-7000 | 4545 15th Ave NE, Seattle, WA, 98105, United States |
| technical, noc, administrative | University of Washington Networks and Distributed | UW-NOC-ARIN | [email protected], +1-206-221-6000 | 4545 15th Avenue NE, 354841, Seattle, WA, 98105-4527, United States |
| technical | University of Washington Networks and Distributed | UW-NOC-ARIN | [email protected], +1-206-221-6000 | 4545 15th Avenue NE, 354841, Seattle, WA, 98105-4527, United States |
Raw registry response
{
"endAutnum": 73,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-10-22T18:51:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2004-02-02T08:56:44-05:00"
}
],
"handle": "UWSO-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UWSO-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/73"
},
{
"href": "https://whois.arin.net/rest/poc/UWSO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2022-10-22"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
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"text",
"4.0"
],
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"label": "4545 15th Ave NE\nSeattle\nWA\n98105\nUnited States"
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]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-17T14:51:38-05:00"
}
],
"handle": "UW-NOC-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UW-NOC-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/73"
},
{
"href": "https://whois.arin.net/rest/poc/UW-NOC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"noc",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
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[
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],
[
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},
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]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-15T17:18:29-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-05-20T21:04:11-04:00"
}
],
"handle": "UWND-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UWND-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/73"
},
{
"href": "https://whois.arin.net/rest/org/UWND-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
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"text",
"4.0"
],
[
"fn",
[],
"text",
"University of Washington"
],
[
"adr",
{
"label": "4545 15th Ave NE\nSeattle\nWA\n98105\nUnited States"
},
"text",
[
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]
],
[
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},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-17T14:51:38-05:00"
}
],
"handle": "UW-NOC-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UW-NOC-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/73"
},
{
"href": "https://whois.arin.net/rest/poc/UW-NOC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4545 15th Avenue NE, 354841\nSeattle\nWA\n98105-4527\nUnited States"
},
"text",
[
"",
"",
"",
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]
],
[
"fn",
[],
"text",
"University of Washington Networks and Distributed"
],
[
"org",
[],
"text",
"University of Washington"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
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"voice"
]
},
"text",
"+1-206-221-6000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-10-01T20:46:06-04:00"
},
{
"eventAction": "registration",
"eventDate": "1986-05-05T00:00:00-04:00"
}
],
"handle": "AS73",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/73",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/73"
},
{
"href": "https://whois.arin.net/rest/asn/AS73",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"name": "WASHINGTON-AS",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/73"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"remarks": [
{
"description": [
"The primary As for the University of Washington Campuses in the Puget Sound area, and also networks at our GR site dependent on AS73 for connectivity."
],
"title": "Registration Comments"
}
],
"startAutnum": 73,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.