Whois & RDAP Lookup
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IP Geolocation RDAPIP Range20.0.0.0 - 20.31.255.255
HandleNET-20-0-0-0-1
NameMSFT
TypeDIRECT ALLOCATION
HolderMicrosoft Corporation
Registered2017-10-18 17:17 UTC
Updated2021-12-15 01:28 UTC
RegistrantMicrosoft Corporation
AddressOne Microsoft Way, Redmond, WA, 98052, United States
Admin ContactIPHostmaster IPHostmaster
Email[email protected]
Phone+1-425-538-6637
AddressOne Microsoft Way, Redmond, WA, 20147, United States
Tech ContactPrachi Singh
Email[email protected]
Phone+1-425-707-5601
Address1 Microsoft Way, Redmond, WA, 98052, United States
Abuse Contact[email protected]
Abuse Phone+1-425-882-8080
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: 20.0.0.0 - 20.31.255.255 CIDR: 20.0.0.0/11 NetName: MSFT NetHandle: NET-20-0-0-0-1 Parent: NET20 (NET-20-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Microsoft Corporation (MSFT) RegDate: 2017-10-18 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/20.0.0.0 OrgName: Microsoft Corporation OrgId: MSFT Address: One Microsoft Way City: Redmond StateProv: WA PostalCode: 98052 Country: US RegDate: 1998-07-10 Updated: 2025-06-10 Comment: To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to: Comment: * https://cert.microsoft.com. Comment: Comment: For SPAM and other abuse issues, such as Microsoft Accounts, please contact: Comment: * [email protected]. Comment: Comment: To report security vulnerabilities in Microsoft products and services, please contact: Comment: * [email protected]. Comment: Comment: For legal and law enforcement-related requests, please contact: Comment: * [email protected] Comment: Comment: For routing, peering or DNS issues, please Comment: contact: Comment: * [email protected] Ref: https://rdap.arin.net/registry/entity/MSFT OrgTechHandle: BEDAR6-ARIN OrgTechName: Bedard, Dawn OrgTechPhone: +1-425-538-6637 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/BEDAR6-ARIN OrgRoutingHandle: CHATU3-ARIN OrgRoutingName: Chaturmohta, Somesh OrgRoutingPhone: +1-425-882-8080 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/CHATU3-ARIN OrgTechHandle: SINGH683-ARIN OrgTechName: Singh, Prachi OrgTechPhone: +1-425-707-5601 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/SINGH683-ARIN OrgTechHandle: IPHOS5-ARIN OrgTechName: IPHostmaster, IPHostmaster OrgTechPhone: +1-425-538-6637 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/IPHOS5-ARIN OrgAbuseHandle: MAC74-ARIN OrgAbuseName: Microsoft Abuse Contact OrgAbusePhone: +1-425-882-8080 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/MAC74-ARIN OrgTechHandle: MRPD-ARIN OrgTechName: Microsoft Routing, Peering, and DNS OrgTechPhone: +1-425-882-8080 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/MRPD-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: 486 msec % WHEN: Wed Jul 29 00:20:32 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"length": 11,
"v4prefix": "20.0.0.0"
}
],
"endAddress": "20.31.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-07-11T19:59:19-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-06-13T16:28:52-04:00"
}
],
"handle": "SINGH683-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SINGH683-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/SINGH683-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"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 2024-07-10"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
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{
"label": "1 Microsoft Way\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
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[
"fn",
{},
"text",
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[
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[
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]
},
"text",
"+1-425-707-5601"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-16T14:01:14-04:00"
},
{
"eventAction": "registration",
"eventDate": "2013-08-20T19:26:59-04:00"
}
],
"handle": "MRPD-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MRPD-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/MRPD-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
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"traffic emanating from Microsoft online services, \r",
"including the distribution of malicious content \r",
"or other illicit or illegal material through a \r",
"Microsoft online service, please submit reports \r",
"to:\r",
"* https://cert.microsoft.com. \r",
"\r",
"For SPAM and other abuse issues, such as Microsoft \r",
"Accounts, please contact:\r",
"* [email protected]. \r",
"\r",
"To report security vulnerabilities in Microsoft \r",
"products and services, please contact:\r",
"* [email protected]. \r",
"\r",
"For legal and law enforcement-related requests, \r",
"please contact:\r",
"* [email protected]\r",
"\r",
"For routing, peering or DNS issues, please \r",
"contact:\r",
"* [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
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],
"vcardArray": [
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[
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[
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]
],
[
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{},
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],
[
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"text",
"Microsoft Routing, Peering, and DNS"
],
[
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{},
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"group"
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[
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{},
"text",
"[email protected]"
],
[
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{
"type": [
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"voice"
]
},
"text",
"+1-425-882-8080"
]
]
]
},
{
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{
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"eventDate": "2025-10-21T16:47:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-10-13T17:30:13-04:00"
}
],
"handle": "IPHOS5-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IPHOS5-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/IPHOS5-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"vcardArray": [
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{},
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[
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{
"label": "One Microsoft Way\nRedmond\nWA\n20147\nUnited States"
},
"text",
[
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]
],
[
"fn",
{},
"text",
"IPHostmaster IPHostmaster"
],
[
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{},
"text",
[
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""
]
],
[
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{},
"text",
"individual"
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[
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{},
"text",
"[email protected]"
],
[
"tel",
{
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]
},
"text",
"+1-425-538-6637"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-08-19T10:44:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-10-20T15:51:33-04:00"
}
],
"handle": "BEDAR6-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/BEDAR6-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/BEDAR6-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1 Redmond Way\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
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"",
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""
]
],
[
"fn",
{},
"text",
"Dawn Bedard"
],
[
"n",
{},
"text",
[
"Bedard",
"Dawn",
"",
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""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-425-538-6637"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-10T13:18:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2013-08-20T19:24:57-04:00"
}
],
"handle": "MAC74-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAC74-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/MAC74-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"To report suspected security issues specific to traffic emanating from Microsoft Online Services, including the distribution of malicious content or other illicit or illegal material through a Microsoft Online Service, please submit reports to https://cert.microsoft.com. \r",
"For SPAM and other abuse issues, such as Microsoft Accounts, please contact [email protected]. \r",
"To report security vulnerabilities in Microsoft products and services, please contact [email protected]. \r",
"For legal and law enforcement-related requests, please contact [email protected]\r",
"For routing, peering or DNS issues, please contact [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "One Microsoft Way\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
"",
"",
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"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Microsoft Abuse Contact"
],
[
"org",
{},
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"Microsoft Abuse Contact"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-425-882-8080"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-10T19:08:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-06-13T16:26:16-04:00"
}
],
"handle": "CHATU3-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CHATU3-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/poc/CHATU3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "One Microsoft way\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Somesh Chaturmohta"
],
[
"n",
{},
"text",
[
"Chaturmohta",
"Somesh",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-425-882-8080"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-10T13:41:34-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-07-10T00:00:00-04:00"
}
],
"handle": "MSFT",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MSFT",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/org/MSFT",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to:\r",
"* https://cert.microsoft.com. \r",
"\r",
"For SPAM and other abuse issues, such as Microsoft Accounts, please contact:\r",
"* [email protected]. \r",
"\r",
"To report security vulnerabilities in Microsoft products and services, please contact:\r",
"* [email protected]. \r",
"\r",
"For legal and law enforcement-related requests, please contact:\r",
"* [email protected]\r",
"\r",
"For routing, peering or DNS issues, please \r",
"contact:\r",
"* [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Microsoft Corporation"
],
[
"adr",
{
"label": "One Microsoft Way\nRedmond\nWA\n98052\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:45-05:00"
},
{
"eventAction": "registration",
"eventDate": "2017-10-18T13:17:25-04:00"
}
],
"handle": "NET-20-0-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/20.0.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
},
{
"href": "https://whois.arin.net/rest/net/NET-20-0-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/20.27.177.113"
}
],
"name": "MSFT",
"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/20.27.177.113"
}
],
"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/20.27.177.113"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-20-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "20.0.0.0",
"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.