Registry · RDAP Original response
https://rdap.arin.net/registry/ip/131.243.255.255
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "131.243.0.0",
"length": 16
}
],
"endAddress": "131.243.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-23T19:40:37-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-06-05T12:39:27-04:00"
}
],
"handle": "SIMON407-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SIMON407-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
},
{
"href": "https://whois.arin.net/rest/poc/SIMON407-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 Cyclotron Road\nBerkeley\nCA\n94720\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Richard Simon"
],
[
"n",
[],
"text",
[
"Simon",
"Richard",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"rsimon@lbl.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-486-5585"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-17T10:19:54-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-11-07T23:36:03-05:00"
}
],
"handle": "STROM17-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/STROM17-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
},
{
"href": "https://whois.arin.net/rest/poc/STROM17-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 Cyclotron Road\nBerkeley\nCA\n94720\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Rune Stromsness"
],
[
"n",
[],
"text",
[
"Stromsness",
"Rune",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"rstrom@lbl.gov"
],
[
"email",
[],
"text",
"runes@nsx.lbl.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-486-5095"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-19T12:05:00-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-04-06T20:43:08-04:00"
}
],
"handle": "CPP-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CPP-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
},
{
"href": "https://whois.arin.net/rest/poc/CPP-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "One Cyclotron Road\r\nMail Stop 50B-2239A\nBerkeley\nCA\n94720\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Computer Protection Program"
],
[
"org",
[],
"text",
"Lawrence Berkeley National Laboratory"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"security@lbl.gov"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-486-7770"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-11T17:07:19-04:00"
},
{
"eventAction": "registration",
"eventDate": "2019-02-11T16:43:03-05:00"
}
],
"handle": "LBNL-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LBNL-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
},
{
"href": "https://whois.arin.net/rest/org/LBNL-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please direct SPAM related queries to spam@lbl.gov\r",
"Please direct ABUSE related queries to cppm@lbl.gov"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Lawrence Berkeley National Laboratory"
],
[
"adr",
{
"label": "One Cyclotron Road\nBerkeley\nCA\n94720\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-12-30T15:55:15-05:00"
},
{
"eventAction": "registration",
"eventDate": "1989-02-08T00:00:00-05:00"
}
],
"handle": "NET-131-243-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/131.243.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
},
{
"href": "https://whois.arin.net/rest/net/NET-131-243-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.243.255.255"
}
],
"name": "LBL-IP-NET2",
"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/131.243.255.255"
}
],
"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/131.243.255.255"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-131-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"Please direct SPAM queries to abuse@lbl.gov.",
"Please direct ABUSE queries to security@lbl.gov."
],
"title": "Registration Comments"
}
],
"startAddress": "131.243.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}