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.
151.101.128.81
IP addressHeld by Fastly, Inc.2 requests in 1.1 s2026-11-09 05:24:49 UTCRegistered
Network
| Range | 151.101.0.0 – 151.101.255.255 |
|---|---|
| CIDR | 151.101.0.0/16 |
| Name | SKYCA-3 |
| Held by | Fastly, Inc. SKYCA-3 |
| Country | US |
| Type | DIRECT ALLOCATION |
| Handle | NET-151-101-0-0-1 · part of NET-151-0-0-0-0 |
| Registered | · 10 years, 9 months ago |
| Last changed | · 4 years, 10 months ago |
| Status | active |
| Report abuse | abuse@fastly.com · +1-415-496-9353 |
| Registry | RIPE NCC |
Reverse DNS and more: DNS lookup for 151.101.128.81.
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: 151.101.0.0 - 151.101.255.255 CIDR: 151.101.0.0/16 NetName: SKYCA-3 NetHandle: NET-151-101-0-0-1 Parent: RIPE-ERX-151 (NET-151-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Fastly, Inc. (SKYCA-3) RegDate: 2016-02-01 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/151.101.0.0 OrgName: Fastly, Inc. OrgId: SKYCA-3 Address: PO Box 78266 City: San Francisco StateProv: CA PostalCode: 94107 Country: US RegDate: 2011-09-16 Updated: 2025-03-25 Ref: https://rdap.arin.net/registry/entity/SKYCA-3 OrgAbuseHandle: ABUSE4771-ARIN OrgAbuseName: Abuse Account OrgAbusePhone: +1-415-496-9353 OrgAbuseEmail: abuse@fastly.com OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE4771-ARIN OrgNOCHandle: FNO19-ARIN OrgNOCName: Fastly Network Operations OrgNOCPhone: +1-415-404-9374 OrgNOCEmail: noc@fastly.com OrgNOCRef: https://rdap.arin.net/registry/entity/FNO19-ARIN OrgTechHandle: FRA19-ARIN OrgTechName: Fastly RIR Administrator OrgTechPhone: +1-415-518-9103 OrgTechEmail: rir-admin@fastly.com OrgTechRef: https://rdap.arin.net/registry/entity/FRA19-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/151.101.128.81
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "151.101.0.0",
"length": 16
}
],
"endAddress": "151.101.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-25T12:51:53-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-06-21T03:11:09-04:00"
}
],
"handle": "ABUSE4771-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE4771-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE4771-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 78266\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse Account"
],
[
"org",
[],
"text",
"Fastly, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@fastly.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-496-9353"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-08T16:32:11-05:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-24T10:13:17-04:00"
}
],
"handle": "FRA19-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/FRA19-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
},
{
"href": "https://whois.arin.net/rest/poc/FRA19-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 78266\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Fastly RIR Administrator"
],
[
"org",
[],
"text",
"Fastly, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"rir-admin@fastly.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-404-9374"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-518-9103"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-25T12:52:33-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-03-30T13:26:02-04:00"
}
],
"handle": "FNO19-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/FNO19-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
},
{
"href": "https://whois.arin.net/rest/poc/FNO19-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 78266\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Fastly Network Operations"
],
[
"org",
[],
"text",
"Fastly, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"noc@fastly.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-404-9374"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-25T13:29:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-09-16T11:42:08-04:00"
}
],
"handle": "SKYCA-3",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SKYCA-3",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
},
{
"href": "https://whois.arin.net/rest/org/SKYCA-3",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Fastly, Inc."
],
[
"adr",
{
"label": "PO Box 78266\nSan Francisco\nCA\n94107\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:34-05:00"
},
{
"eventAction": "registration",
"eventDate": "2016-02-01T15:18:40-05:00"
}
],
"handle": "NET-151-101-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/151.101.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
},
{
"href": "https://whois.arin.net/rest/net/NET-151-101-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/151.101.128.81"
}
],
"name": "SKYCA-3",
"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/151.101.128.81"
}
],
"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/151.101.128.81"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-151-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "151.101.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}Servers asked
| Protocol | Server | Result | Time |
|---|---|---|---|
| RDAP | https://rdap.arin.net/registry/ip/151.101.128.81 | HTTP 200 | 764 ms |
| WHOIS | whois.arin.net “n + 151.101.128.81” | 1,940 bytes | 319 ms |