WHOIS lookup
Look up a domain, an IPv4 or IPv6 address or an AS number (ASN). For a domain: who registered it, which registrar holds it, when it expires and what its status codes mean. For an address or ASN: which network it belongs to, who holds it and where to report abuse. Asked over RDAP and classic WHOIS, of the registry and then the registrar.
173.245.58.162
IP addressHeld by Cloudflare, Inc.2 requests in 0.9 s2026-11-09 05:12:42 UTCRegistered
Network
| Range | 173.245.48.0 – 173.245.63.255 |
|---|---|
| CIDR | 173.245.48.0/20 |
| Name | CLOUDFLARENET |
| Held by | Cloudflare, Inc. CLOUD14 |
| Country | US |
| Type | DIRECT ALLOCATION |
| Handle | NET-173-245-48-0-1 · part of NET-173-0-0-0-0 |
| Registered | · 15 years, 10 months ago |
| Last changed | · 2 years, 2 months ago |
| Status | active |
| Report abuse | abuse@cloudflare.com · +1-650-319-8930 |
| Registry | ARIN |
Reverse DNS and more: DNS lookup for 173.245.58.162.
WHOIS
The raw replies over port 43, as the whois command shows them.
ARIN whois.arin.net
# # 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: 173.245.48.0 - 173.245.63.255 CIDR: 173.245.48.0/20 NetName: CLOUDFLARENET NetHandle: NET-173-245-48-0-1 Parent: NET173 (NET-173-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Cloudflare, Inc. (CLOUD14) RegDate: 2010-12-28 Updated: 2024-09-04 Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse Comment: Geofeed: https://api.cloudflare.com/local-ip-ranges.csv Ref: https://rdap.arin.net/registry/ip/173.245.48.0 OrgName: Cloudflare, Inc. OrgId: CLOUD14 Address: 101 Townsend Street City: San Francisco StateProv: CA PostalCode: 94107 Country: US RegDate: 2010-07-09 Updated: 2024-11-25 Ref: https://rdap.arin.net/registry/entity/CLOUD14 OrgNOCHandle: CLOUD146-ARIN OrgNOCName: Cloudflare-NOC OrgNOCPhone: +1-650-319-8930 OrgNOCEmail: noc@cloudflare.com OrgNOCRef: https://rdap.arin.net/registry/entity/CLOUD146-ARIN OrgRoutingHandle: CLOUD146-ARIN OrgRoutingName: Cloudflare-NOC OrgRoutingPhone: +1-650-319-8930 OrgRoutingEmail: noc@cloudflare.com OrgRoutingRef: https://rdap.arin.net/registry/entity/CLOUD146-ARIN OrgAbuseHandle: ABUSE2916-ARIN OrgAbuseName: Abuse OrgAbusePhone: +1-650-319-8930 OrgAbuseEmail: abuse@cloudflare.com OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN OrgTechHandle: ADMIN2521-ARIN OrgTechName: Admin OrgTechPhone: +1-650-319-8930 OrgTechEmail: rir@cloudflare.com OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN RTechHandle: ADMIN2521-ARIN RTechName: Admin RTechPhone: +1-650-319-8930 RTechEmail: rir@cloudflare.com RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN RNOCHandle: NOC11962-ARIN RNOCName: NOC RNOCPhone: +1-650-319-8930 RNOCEmail: noc@cloudflare.com RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN RAbuseHandle: ABUSE2916-ARIN RAbuseName: Abuse RAbusePhone: +1-650-319-8930 RAbuseEmail: abuse@cloudflare.com RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-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. #
RDAP
The JSON replies WHOIS is being replaced by.
ARIN https://rdap.arin.net/registry/ip/173.245.58.162
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "173.245.48.0",
"length": 20
}
],
"endAddress": "173.245.63.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-23T22:28:37-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-07-01T14:10:58-04:00"
}
],
"handle": "CLOUD146-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CLOUD146-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/CLOUD146-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend St\nSan Francsico\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Cloudflare-NOC"
],
[
"org",
[],
"text",
"Cloudflare, Inc"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"noc@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-04T13:14:53-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-02-14T19:00:47-05:00"
}
],
"handle": "ABUSE2916-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE2916-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE2916-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse"
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-09-04"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"Cloudflare, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-12T04:48:05-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-04-19T16:11:36-04:00"
}
],
"handle": "ADMIN2521-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ADMIN2521-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/ADMIN2521-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Admin"
],
[
"org",
[],
"text",
"Cloudflare, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"rir@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-25T11:09:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-07-09T14:10:42-04:00"
}
],
"handle": "CLOUD14",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CLOUD14",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/org/CLOUD14",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Cloudflare, Inc."
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-04T13:14:53-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-02-14T19:00:47-05:00"
}
],
"handle": "ABUSE2916-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE2916-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE2916-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse"
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-09-04"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"Cloudflare, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-12T04:48:05-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-04-19T16:11:36-04:00"
}
],
"handle": "ADMIN2521-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ADMIN2521-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/ADMIN2521-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse"
],
"title": "Registration Comments"
}
],
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Admin"
],
[
"org",
[],
"text",
"Cloudflare, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"rir@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-30T05:15:18-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-04-19T16:25:31-04:00"
}
],
"handle": "NOC11962-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NOC11962-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/poc/NOC11962-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse"
],
"title": "Registration Comments"
}
],
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Townsend Street\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"NOC"
],
[
"org",
[],
"text",
"Cloudflare, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"noc@cloudflare.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-319-8930"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-04T07:54:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "2010-12-28T18:08:31-05:00"
}
],
"handle": "NET-173-245-48-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/173.245.48.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
},
{
"href": "https://whois.arin.net/rest/net/NET-173-245-48-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/173.245.58.162"
}
],
"name": "CLOUDFLARENET",
"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/173.245.58.162"
}
],
"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/173.245.58.162"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-173-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse",
"Geofeed: https://api.cloudflare.com/local-ip-ranges.csv"
],
"title": "Registration Comments"
}
],
"startAddress": "173.245.48.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}Servers asked
| Protocol | Server | Result | Time |
|---|---|---|---|
| RDAP | https://rdap.arin.net/registry/ip/173.245.58.162 | HTTP 200 | 612 ms |
| WHOIS | whois.arin.net “n + 173.245.58.162” | 2,843 bytes | 301 ms |