Registry · RDAP Original response
https://rdap.arin.net/registry/ip/50.58.16.0
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "50.58.16.0",
"length": 23
}
],
"endAddress": "50.58.17.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-02T15:29:24-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-07-02T17:41:11-04:00"
}
],
"handle": "RNE105-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RNE105-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
},
{
"href": "https://whois.arin.net/rest/poc/RNE105-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4101 Winfield Road\nWarrenville\nIL\n60555\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"RRD Network Engineering"
],
[
"org",
[],
"text",
"RR Donnelley"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"networkengineering-na@rrd.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-630-322-6870"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-19T15:07:20-05:00"
},
{
"eventAction": "registration",
"eventDate": "2008-11-25T09:48:03-05:00"
}
],
"handle": "JAMES24-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/JAMES24-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
},
{
"href": "https://whois.arin.net/rest/poc/JAMES24-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
}
],
"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 2025-11-19"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "4101 Winfield Road\nWarrenville\nIL\n60555\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"James A Trchka"
],
[
"n",
[],
"text",
[
"Trchka",
"James",
"A",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"james.trchka@rrd.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-630-360-1491"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-03-16T23:25:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "1999-11-29T00:00:00-05:00"
}
],
"handle": "RDS-48",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RDS-48",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
},
{
"href": "https://whois.arin.net/rest/org/RDS-48",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"R.R. Donnelley and Sons, Co."
],
[
"adr",
{
"label": "4101 Winfield Rd\nWarrenville\nIL\n60555\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-16T13:02:39-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-06-16T13:02:39-04:00"
}
],
"handle": "NET-50-58-16-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/50.58.16.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-50-58-16-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
},
{
"href": "https://rdap.arin.net/registry/ip/50.58.0.0/15",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/50.58.16.0"
}
],
"name": "50-58-16-0-23",
"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/50.58.16.0"
}
],
"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/50.58.16.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-50-58-0-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "50.58.16.0",
"status": [
"active"
],
"type": "ASSIGNMENT"
}