Whois & RDAP Lookup
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IP Geolocation RDAPIP Range150.171.0.0 - 150.171.255.255
HandleNET-150-171-0-0-1
NameMSFT
TypeDIRECT ALLOCATION
HolderMicrosoft Corporation
Registered2015-11-24 18:09 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 ContactMicrosoft Routing, Peering, and DNS
OrganizationMicrosoft Corporation
Email[email protected]
Phone+1-425-882-8080
AddressOne Microsoft Way, Redmond, WA, 98052, United States
Abuse Contact[email protected]
Abuse Phone+1-425-882-8080
Statusactive
Registry RDAPhttps://rdap.apnic.net
Raw WHOIS response
% [whois.apnic.net] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html % Information related to '150.0.0.0 - 150.255.255.255' % Abuse contact for '150.0.0.0 - 150.255.255.255' is '[email protected]' inetnum: 150.0.0.0 - 150.255.255.255 netname: ERX-NETBLOCK descr: Early registration addresses country: AU admin-c: HM20-AP tech-c: NO4-AP abuse-c: AA1452-AP status: ALLOCATED PORTABLE remarks: ------------------------------------------------------ remarks: Important: remarks: remarks: This range was initially allocated by InterNIC prior to the remarks: formation of Regional Internet Registries (RIRs). The early remarks: registration transfer project (ERX) transferred these blocks remarks: to be administered by each RIR based on the region in which remarks: the majority of resource holders resided. remarks: remarks: This early registration block has been transferred to APNIC's remarks: administration. However, not all of the resources under this remarks: block have been transferred to APNIC. remarks: remarks: For information on the Early Registration Transfer (ERX) remarks: project, see: http://www.apnic.net/db/erx remarks: remarks: ------------------------------------------------------ mnt-by: APNIC-HM mnt-lower: APNIC-HM mnt-irt: IRT-APNIC-AP last-modified: 2026-09-23T22:33:02Z source: APNIC irt: IRT-APNIC-AP address: Brisbane, Australia e-mail: [email protected] abuse-mailbox: [email protected] admin-c: HM20-AP tech-c: NO4-AP remarks: APNIC is a Regional Internet Registry. remarks: We do not operate the referring network and remarks: are unable to investigate complaints of network abuse. remarks: For information about IRT, see www.apnic.net/irt remarks: [email protected] was validated on 2020-02-03 auth: # Filtered mnt-by: APNIC-HM last-modified: 2025-11-18T00:26:21Z source: APNIC role: ABUSE APNICAP country: ZZ address: Brisbane, Australia phone: +000000000 e-mail: [email protected] admin-c: HM20-AP tech-c: NO4-AP nic-hdl: AA1452-AP remarks: Generated from irt object IRT-APNIC-AP remarks: [email protected] was validated on 2020-02-03 abuse-mailbox: [email protected] mnt-by: APNIC-ABUSE last-modified: 2025-11-28T01:00:58Z source: APNIC role: APNIC Hostmaster address: PO Box 3646 address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: [email protected] admin-c: AMS11-AP tech-c: AH256-AP nic-hdl: HM20-AP remarks: Administrator for APNIC notify: [email protected] mnt-by: MAINT-APNIC-AP last-modified: 2026-08-26T00:40:00Z source: APNIC person: APNIC Network Operations address: PO Box 3646 address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: [email protected] nic-hdl: NO4-AP remarks: Administrator for APNIC Network Operations notify: [email protected] mnt-by: MAINT-APNIC-AP last-modified: 2026-08-26T00:40:01Z source: APNIC % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-SG1) % Query time: 586 msec % WHEN: Mon Oct 12 22:00:41 UTC 2026
Raw RDAP JSON (registry) https://rdap.apnic.net
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"length": 16,
"v4prefix": "150.171.0.0"
}
],
"endAddress": "150.171.255.255",
"entities": [
{
"entities": [
{
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/poc/MRPD-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
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],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
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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",
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"* [email protected]. \r",
"\r",
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"please contact:\r",
"* [email protected]\r",
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"contact:\r",
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],
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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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{
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},
{
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}
],
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/poc/SINGH683-ARIN",
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"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"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": [
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[
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{},
"text",
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[
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{
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"+1-425-707-5601"
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{
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{
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}
],
"handle": "IPHOS5-ARIN",
"links": [
{
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"rel": "self",
"type": "application/rdap+json",
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},
{
"href": "https://whois.arin.net/rest/poc/IPHOS5-ARIN",
"rel": "alternate",
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}
],
"objectClassName": "entity",
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],
[
"fn",
{},
"text",
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],
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[
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},
{
"events": [
{
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},
{
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/poc/BEDAR6-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
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],
"vcardArray": [
"vcard",
[
[
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{},
"text",
"4.0"
],
[
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{
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},
"text",
[
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""
]
],
[
"fn",
{},
"text",
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],
[
"n",
{},
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]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
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],
[
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{
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},
"text",
"+1-425-538-6637"
]
]
]
},
{
"events": [
{
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},
{
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/poc/MAC74-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"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",
{},
"text",
"Microsoft Corporation"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
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]
},
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/poc/CHATU3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"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": [
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]
},
"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/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/org/MSFT",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"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": "2021-12-14T20:28:33-05:00"
},
{
"eventAction": "registration",
"eventDate": "2015-11-24T13:09:08-05:00"
}
],
"handle": "NET-150-171-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/150.171.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
},
{
"href": "https://whois.arin.net/rest/net/NET-150-171-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/150.171.221.93"
}
],
"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/150.171.221.93"
}
],
"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/150.171.221.93"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-150-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "150.171.0.0",
"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.