Registry · RDAP Original response
https://rdap.arin.net/registry/ip/52.128.40.0
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "52.128.40.0",
"length": 21
}
],
"endAddress": "52.128.47.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-25T11:52:46-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-03-27T13:02:04-04:00"
}
],
"handle": "MAILO12-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAILO12-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
},
{
"href": "https://whois.arin.net/rest/poc/MAILO12-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"routing",
"dns",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 N Dearborn St.\nChicgao\nIL\n60602\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Mailops"
],
[
"org",
[],
"text",
"ActiveCampaign "
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"team-mailops@activecampaign.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-357-0402"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-08-15T09:47:36-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-01-18T10:53:02-05:00"
}
],
"handle": "VANDE123-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/VANDE123-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
},
{
"href": "https://whois.arin.net/rest/poc/VANDE123-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
}
],
"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 2025-08-15"
],
"title": "Unvalidated POC"
}
],
"roles": [
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 N Dearborn, 5th Floor\nChicago\nIL\n60602\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Jason VandeBoom"
],
[
"n",
[],
"text",
[
"VandeBoom",
"Jason",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"info@activecampaign.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-357-0402"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-25T11:52:31-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-03-27T13:16:50-04:00"
}
],
"handle": "ABUSE8976-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE8976-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE8976-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1 N Dearborn\nChicago\nIL\n60602\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"ActiveCampaign "
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"abuse@activecampaign.com"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-357-0402"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-03-27T13:18:14-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-01-20T15:14:49-05:00"
}
],
"handle": "ACTIV-68",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ACTIV-68",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
},
{
"href": "https://whois.arin.net/rest/org/ACTIV-68",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"ActiveCampaign, Inc."
],
[
"adr",
{
"label": "1 N Dearborn\n5th Floor\nChicago\nIL\n60602\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-10-23T15:17:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-01-25T14:01:27-05:00"
}
],
"handle": "NET-52-128-40-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/52.128.40.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-52-128-40-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/52.128.40.0"
}
],
"name": "ACTIV-68",
"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/52.128.40.0"
}
],
"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/52.128.40.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-52-0-0-0-0",
"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": "52.128.40.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}