Registry · RDAP Original response https://rdap.arin.net/registry/ip/149.72.4.0/22 Copy record
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "149.72.0.0 ",
"length": 16
}
],
"endAddress": "149.72.255.255 ",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-06T14:38:26-05:00"
},
{
"eventAction": "registration",
"eventDate": "2019-04-17T17:55:32-04:00"
}
],
"handle": "TSNO-ARIN",
"links": [
{
"href": "https://rdap.arin.net /registry/entity/TSNO-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
},
{
"href": "https://whois.arin.net /rest/poc/TSNO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net ",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1801 California Street\nSuite 500\nDenver\nCO\n80202\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Twilio SendGrid Network Operations"
],
[
"org",
[],
"text",
"Twilio SendGrid"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"netops+arin@sendgrid.com "
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-985-7363"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-05T16:53:33-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-06-22T17:22:31-04:00"
}
],
"handle": "ABUSE3074-ARIN",
"links": [
{
"href": "https://rdap.arin.net /registry/entity/ABUSE3074-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
},
{
"href": "https://whois.arin.net /rest/poc/ABUSE3074-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net ",
"remarks": [
{
"description": [
"Abuse desk is available M-F 7a-7p Mountain Time"
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1800 California Street\nSuite 500\nDenver\nCO\n80202\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse Desk"
],
[
"org",
[],
"text",
"Twilio SendGrid"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@sendgrid.com "
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-985-7363"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-14T16:52:10-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-11-18T12:53:31-05:00"
}
],
"handle": "TALSM-ARIN",
"links": [
{
"href": "https://rdap.arin.net /registry/entity/TALSM-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
},
{
"href": "https://whois.arin.net /rest/poc/TALSM-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net ",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "101 Spear St 5th floor\nSan Francisco\nCA\n94105\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Jack Talsma"
],
[
"n",
[],
"text",
[
"Talsma",
"Jack",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"netops+arin@sendgrid.com "
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-415-390-2337"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-12T17:11:56-04:00"
},
{
"eventAction": "registration",
"eventDate": "2012-06-14T06:44:26-04:00"
}
],
"handle": "SENDG-12",
"links": [
{
"href": "https://rdap.arin.net /registry/entity/SENDG-12",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
},
{
"href": "https://whois.arin.net /rest/org/SENDG-12",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net ",
"remarks": [
{
"description": [
"http://www.sendgrid.com \r",
"\r",
"(888) 985-8363\r",
"Support hours: M-F, 7a-7p Mountain Time."
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"SendGrid, Inc."
],
[
"adr",
{
"label": "Twilio, Inc.\n1801 California Street\nSuite 500\nDenver\nCO\n80202\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-04-18T09:36:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-09-05T13:05:12-04:00"
}
],
"handle": "NET-149-72-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net /registry/ip/149.72.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
},
{
"href": "https://whois.arin.net /rest/net/NET-149-72-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net /registry/ip/149.72.4.0/22"
}
],
"name": "SENDGRID-149-72-0-0-16",
"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/149.72.4.0/22"
}
],
"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/149.72.4.0/22"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-149-0-0-0-0",
"port43": "whois.arin.net ",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----"
],
"title": "Registration Comments"
}
],
"startAddress": "149.72.0.0 ",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
} 