RDAP.nu
RDAP lookup with WHOIS comparison
Try: example.com · 1.1.1.1 · AS13335
ASN: AS174
RDAP: OK
WHOIS: OK
ARIN
| aut-num: |
AS174
|
|
|---|---|---|
| as-name: | COGENT-174 | |
| status: | active | [rdap] |
| org: | Cogent Communications, LLC | |
| country: | US | [whois] |
| abuse-c: | [email protected] | |
| tech-c: | [email protected] | [whois] |
| phone: | +1-877-875-4311 | |
| address: | 2450 N Street NW, Washington, DC, 20037, United States | |
| remarks: | Geofeed https://geofeed.cogentco.com/geofeed.csv | [whois] |
| created: | 1996-05-16 00:00:00 GMT-0400 | |
| last-modified: | 2012-03-02 08:03:18 GMT-0500 | |
| rdap-server: | https://rdap.arin.net/registry/ | [rdap] |
| port43: |
whois.arin.net
|
[rdap] |
| notices: |
Terms of Service: By using the ARIN RDAP/Whois service, you are agreeing to the … 3 notices
Terms of Service: By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use
Whois Inaccuracy Reporting: If you see inaccuracies in the results, please visit: Copyright Notice: Copyright 1997-2026, American Registry for Internet Numbers, Ltd. |
[rdap] |
| links: | alternate | [rdap] |
| Field | RDAP | WHOIS |
|---|---|---|
| aut-num: |
AS174
|
AS174
|
| as-name: | COGENT-174 | COGENT-174 |
| status: | active | - |
| org: | Cogent Communications, LLC | Cogent Communications, LLC |
| country: | - | US |
| abuse-c: | [email protected] | [email protected] |
| tech-c: | - | [email protected] |
| phone: | +1-877-875-4311 | +1-877-875-4311 |
| address: | 2450 N Street NW, Washington, DC, 20037, United States | 2450 N Street NW |
| remarks: | - | Geofeed https://geofeed.cogentco.com/geofeed.csv |
| created: | 1996-05-16 00:00:00 GMT-0400 | 1996-05-16 00:00:00 UTC |
| last-modified: | 2012-03-02 08:03:18 GMT-0500 | 2012-03-02 00:00:00 UTC |
| rdap-server: | https://rdap.arin.net/registry/ | - |
| port43: |
whois.arin.net
|
- |
| notices: |
Terms of Service: By using the ARIN RDAP/Whois service, you are agreeing to the … 3 notices
Terms of Service: By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use
Whois Inaccuracy Reporting: If you see inaccuracies in the results, please visit: Copyright Notice: Copyright 1997-2026, American Registry for Internet Numbers, Ltd. |
- |
| links: | alternate | - |
RDAP JSON
{
"endAutnum": 174,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-08T11:30:20-04:00"
},
{
"eventAction": "registration",
"eventDate": "2001-01-24T13:40:39-05:00"
}
],
"handle": "ZC108-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZC108-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/174"
},
{
"href": "https://whois.arin.net/rest/poc/ZC108-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/174"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "2450 N Street NW\nWashington\nDC\n20037\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Cogent Communications"
],
[
"org",
[],
"text",
"Cogent Communications"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-875-4311"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-08T11:30:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-11-13T17:21:33-05:00"
}
],
"handle": "COGEN-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COGEN-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/174"
},
{
"href": "https://whois.arin.net/rest/poc/COGEN-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/174"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "2450 N street, NW\nWashington\nDC\n20037\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Cogent Abuse"
],
[
"org",
[],
"text",
"Cogent Abuse"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-875-4311"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-08T11:30:14-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-11-13T17:21:33-05:00"
}
],
"handle": "IPALL-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IPALL-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/174"
},
{
"href": "https://whois.arin.net/rest/poc/IPALL-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/174"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"THIS CONTACT DOES NOT RESPOND TO ABUSE OR OPERATIONAL ISSUES\r",
"For abuse issues contact [email protected]\r",
"For operational issues contact [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "2450 N Street NW\nWashington\nDC\n20037\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"IP Allocation"
],
[
"org",
[],
"text",
"IP Allocation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-875-4311"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-09-23T12:07:44-04:00"
},
{
"eventAction": "registration",
"eventDate": "2000-05-30T00:00:00-04:00"
}
],
"handle": "COGC",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COGC",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/174"
},
{
"href": "https://whois.arin.net/rest/org/COGC",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/174"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Geofeed https://geofeed.cogentco.com/geofeed.csv"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Cogent Communications, LLC"
],
[
"adr",
{
"label": "2450 N Street NW\nWashington\nDC\n20037\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-03-02T08:03:18-05:00"
},
{
"eventAction": "registration",
"eventDate": "1996-05-16T00:00:00-04:00"
}
],
"handle": "AS174",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/174",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/174"
},
{
"href": "https://whois.arin.net/rest/asn/AS174",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/174"
}
],
"name": "COGENT-174",
"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/autnum/174"
}
],
"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/autnum/174"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 174,
"status": [
"active"
]
}WHOIS Raw
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
ASNumber: 174
ASName: COGENT-174
ASHandle: AS174
RegDate: 1996-05-16
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/174
OrgName: Cogent Communications, LLC
OrgId: COGC
Address: 2450 N Street NW
City: Washington
StateProv: DC
PostalCode: 20037
Country: US
RegDate: 2000-05-30
Updated: 2025-09-23
Comment: Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref: https://rdap.arin.net/registry/entity/COGC
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgTechHandle: IPALL-ARIN
OrgTechName: IP Allocation
OrgTechPhone: +1-877-875-4311
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-ARIN
OrgAbuseHandle: COGEN-ARIN
OrgAbuseName: Cogent Abuse
OrgAbusePhone: +1-877-875-4311
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN
OrgNOCHandle: ZC108-ARIN
OrgNOCName: Cogent Communications
OrgNOCPhone: +1-877-875-4311
OrgNOCEmail: [email protected]
OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
Found a referral to rwhois.cogentco.com:4321.
%rwhois V-1.5:0010b0:00 rwhois.cogentco.com (CGNT rwhoisd 1.2.2)
%error 230 No objects found