Registry · RDAP Original response
https://rdap.arin.net/registry/ip/128.57.0.0
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "128.57.0.0",
"length": 16
}
],
"endAddress": "128.57.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-01T15:15:20-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-10T13:07:14-04:00"
}
],
"handle": "TOMAS90-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/TOMAS90-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/TOMAS90-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing",
"abuse",
"dns",
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave.\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"John Tomasetti"
],
[
"n",
[],
"text",
[
"Tomasetti",
"John",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"john.tomasetti@sri.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6166"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T13:30:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-08T19:51:25-04:00"
}
],
"handle": "MAMF-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAMF-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/MAMF-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"technical",
"abuse",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave\n\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Mark Anthony Medrano Favis"
],
[
"n",
[],
"text",
[
"Favis",
"Mark Anthony ",
"Medrano",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"mark.favis@sri.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6499"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-01T13:38:33-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-10-30T10:52:34-04:00"
}
],
"handle": "SRIINT-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SRIINT-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
},
{
"href": "https://whois.arin.net/rest/org/SRIINT-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"SRI International"
],
[
"adr",
{
"label": "333 Ravenswood Avenue\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T13:30:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-08T19:51:25-04:00"
}
],
"handle": "MAMF-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAMF-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/MAMF-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave\n\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Mark Anthony Medrano Favis"
],
[
"n",
[],
"text",
[
"Favis",
"Mark Anthony ",
"Medrano",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"mark.favis@sri.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6499"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-04-09T17:54:34-04:00"
},
{
"eventAction": "registration",
"eventDate": "1984-11-09T00:00:00-05:00"
}
],
"handle": "NET-128-57-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/128.57.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-128-57-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.0"
}
],
"name": "DEMO-PR-2",
"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/128.57.0.0"
}
],
"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/128.57.0.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-128-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "128.57.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}