Whois & RDAP Lookup
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RDAPIP Range205.175.96.0 - 205.175.127.255
HandleNET-205-175-96-0-1
NameUW-SEA-BLK2
TypeDIRECT ALLOCATION
HolderUniversity of Washington
Registered1995-04-14 04:00 UTC
Updated2021-10-02 00:48 UTC
RegistrantUniversity of Washington
Address4545 15th Ave NE, Seattle, WA, 98105, United States
Admin ContactUniversity of Washington Networks and Distributed
OrganizationUniversity of Washington
Email[email protected]
Phone+1-206-221-6000
Address4545 15th Avenue NE, 354841, Seattle, WA, 98105-4527, United States
Tech ContactUniversity of Washington Networks and Distributed
OrganizationUniversity of Washington
Email[email protected]
Phone+1-206-221-6000
Address4545 15th Avenue NE, 354841, Seattle, WA, 98105-4527, United States
Abuse Contact[email protected]
Abuse Phone+1-206-221-7000
Statusactive
Registry RDAPhttps://rdap.arin.net
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. # NetRange: 205.175.96.0 - 205.175.127.255 CIDR: 205.175.96.0/19 NetName: UW-SEA-BLK2 NetHandle: NET-205-175-96-0-1 Parent: NET205 (NET-205-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: University of Washington (UWND-Z) RegDate: 1995-04-14 Updated: 2021-10-01 Ref: https://rdap.arin.net/registry/ip/205.175.96.0 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: [email protected] 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: [email protected] 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: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/UWSO-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. # % Query time: 1505 msec % WHEN: Thu Oct 29 13:35:03 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
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"cidr0_cidrs": [
{
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"v4prefix": "205.175.96.0"
}
],
"endAddress": "205.175.127.255",
"entities": [
{
"entities": [
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"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/ip/205.175.96.0/19"
},
{
"href": "https://whois.arin.net/rest/poc/UWSO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/205.175.96.0/19"
}
],
"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": [
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[
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{},
"text",
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[
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],
[
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{
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},
"text",
"+1-206-221-7000"
]
]
]
},
{
"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/ip/205.175.96.0/19"
},
{
"href": "https://whois.arin.net/rest/poc/UW-NOC-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/205.175.96.0/19"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"administrative"
],
"status": [
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],
"vcardArray": [
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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/ip/205.175.96.0/19"
},
{
"href": "https://whois.arin.net/rest/org/UWND-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/205.175.96.0/19"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"vcardArray": [
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[
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{},
"text",
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],
[
"fn",
{},
"text",
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],
[
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{
"label": "4545 15th Ave NE\nSeattle\nWA\n98105\nUnited States"
},
"text",
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],
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],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-10-01T20:48:42-04:00"
},
{
"eventAction": "registration",
"eventDate": "1995-04-14T00:00:00-04:00"
}
],
"handle": "NET-205-175-96-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/205.175.96.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/205.175.96.0/19"
},
{
"href": "https://whois.arin.net/rest/net/NET-205-175-96-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/205.175.96.0/19"
}
],
"name": "UW-SEA-BLK2",
"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/ip/205.175.96.0/19"
}
],
"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/ip/205.175.96.0/19"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-205-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "205.175.96.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}Frequently asked questions
What is WHOIS?
WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.
What is RDAP, and how does it differ?
RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.
What is the difference between a registrar and a registrant?
The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.
What are nameservers?
Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.
Why is the contact information redacted?
Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.