Whois & RDAP Lookup
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IP Geolocation RDAPIP Range23.185.0.0 - 23.185.0.255
HandleNET-23-185-0-0-1
NamePANTHEON-IP4
TypeDIRECT ALLOCATION
HolderPantheon
Registered2016-11-21 23:01 UTC
Updated2021-12-15 01:28 UTC
RegistrantPantheon
Address717 California St Fl 2, San Francisco, CA, 94108, United States
Admin ContactDavid Timothy Strauss
Email[email protected]
Phone+1-512-577-5827
Address717 California St Fl 2, San Francisco, CA, 94108, United States
Tech ContactDavid Timothy Strauss
Email[email protected]
Phone+1-512-577-5827
Address717 California St Fl 2, San Francisco, CA, 94108, United States
Abuse Contact[email protected]
Abuse Phone+1-415-780-9765
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: 23.185.0.0 - 23.185.0.255 CIDR: 23.185.0.0/24 NetName: PANTHEON-IP4 NetHandle: NET-23-185-0-0-1 Parent: NET23 (NET-23-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Pantheon (PS-747) RegDate: 2016-11-21 Updated: 2021-12-14 Comment: https://pantheon.io/ Ref: https://rdap.arin.net/registry/ip/23.185.0.0 OrgName: Pantheon OrgId: PS-747 Address: 717 California St Fl 2 City: San Francisco StateProv: CA PostalCode: 94108 Country: US RegDate: 2016-07-21 Updated: 2025-03-27 Ref: https://rdap.arin.net/registry/entity/PS-747 OrgTechHandle: CALLA216-ARIN OrgTechName: Callahan, Matthew OrgTechPhone: +1-267-473-2257 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/CALLA216-ARIN OrgRoutingHandle: CALLA216-ARIN OrgRoutingName: Callahan, Matthew OrgRoutingPhone: +1-267-473-2257 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/CALLA216-ARIN OrgAbuseHandle: PANTH3-ARIN OrgAbuseName: Pantheon Abuse OrgAbusePhone: +1-415-780-9765 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/PANTH3-ARIN OrgDNSHandle: CALLA216-ARIN OrgDNSName: Callahan, Matthew OrgDNSPhone: +1-267-473-2257 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/CALLA216-ARIN OrgNOCHandle: CALLA216-ARIN OrgNOCName: Callahan, Matthew OrgNOCPhone: +1-267-473-2257 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/CALLA216-ARIN OrgNOCHandle: DTS41-ARIN OrgNOCName: Strauss, David Timothy OrgNOCPhone: +1-512-577-5827 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/DTS41-ARIN OrgTechHandle: DTS41-ARIN OrgTechName: Strauss, David Timothy OrgTechPhone: +1-512-577-5827 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/DTS41-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: 386 msec % WHEN: Wed Jul 29 22:56:48 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"length": 24,
"v4prefix": "23.185.0.0"
}
],
"endAddress": "23.185.0.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-27T18:36:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-07-20T18:20:51-04:00"
}
],
"handle": "DTS41-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DTS41-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
},
{
"href": "https://whois.arin.net/rest/poc/DTS41-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"https://pantheon.io/"
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2026-03-27"
],
"title": "Unvalidated POC"
}
],
"roles": [
"administrative",
"noc",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "717 California St Fl 2\nSan Francisco\nCA\n94108\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"David Timothy Strauss"
],
[
"n",
{},
"text",
[
"Strauss",
"David",
"Timothy",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-512-577-5827"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-08-09T09:47:11-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-08-09T18:06:39-04:00"
}
],
"handle": "PANTH3-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PANTH3-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
},
{
"href": "https://whois.arin.net/rest/poc/PANTH3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
}
],
"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 2023-08-09"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "717 California Street\n2nd Floor\nSan Francisco\nCA\n94108\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Pantheon Abuse"
],
[
"org",
{},
"text",
"Pantheon Abuse"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-780-9765"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-27T18:23:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-03-27T18:23:21-04:00"
}
],
"handle": "CALLA216-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CALLA216-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
},
{
"href": "https://whois.arin.net/rest/poc/CALLA216-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
}
],
"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 2026-03-27"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical",
"routing",
"dns",
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "717 California St Fl 2\nSan Francisco\nCA\n94108\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Matthew Callahan"
],
[
"n",
{},
"text",
[
"Callahan",
"Matthew",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-267-473-2257"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-03-27T18:28:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-07-21T13:30:06-04:00"
}
],
"handle": "PS-747",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PS-747",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
},
{
"href": "https://whois.arin.net/rest/org/PS-747",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Pantheon"
],
[
"adr",
{
"label": "717 California St Fl 2\nSan Francisco\nCA\n94108\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-12-14T20:28:34-05:00"
},
{
"eventAction": "registration",
"eventDate": "2016-11-21T18:01:32-05:00"
}
],
"handle": "NET-23-185-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/23.185.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
},
{
"href": "https://whois.arin.net/rest/net/NET-23-185-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/23.185.0.4"
}
],
"name": "PANTHEON-IP4",
"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/23.185.0.4"
}
],
"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/23.185.0.4"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-23-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"https://pantheon.io/"
],
"title": "Registration Comments"
}
],
"startAddress": "23.185.0.0",
"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.