Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS36581
WJCL-TV - Hearst-Argyle Television, Inc. Announcing routesAS nameWJCL-TV
OrganisationHearst-Argyle Television, Inc.
Registry (RIR)ARIN
HandleAS36581
RangeAS36581
Registered02 Feb 2006
Last changed17 Jun 2016
Abuse contact[email protected]
2IPv4 prefixes
0IPv6 prefixes
2Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS400511 | CWAVEFIBER - Clearwave Communications | 307 |
| AS7018 | ATT-INTERNET4 - AT&T Enterprises, LLC | 209 |
Downstreams
None seen.
IPv4 prefixes (2)
RPKI-validate all prefixes of AS36581
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Hearst-Argyle Television, Inc. | HEARS-2 | 888 Seventh Avenue, New York, NY, 10106, United States | |
| abuse, administrative, technical | HTS NOC-Admin | HTSNO-ARIN | [email protected], +1-704-348-8000 | 3540 Toringdon Way, Charlotte, NC, 28277, United States |
| technical | Pat McCaskill | PMC232-ARIN | [email protected], +1-704-348-8000 | 3540 Toringdon Way, Charlotte, NC, 28277, United States |
Raw registry response
{
"endAutnum": 36581,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-31T10:22:15-05:00"
},
{
"eventAction": "registration",
"eventDate": "2024-11-21T15:22:05-05:00"
}
],
"handle": "HTSNO-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HTSNO-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/36581"
},
{
"href": "https://whois.arin.net/rest/poc/HTSNO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/36581"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "3540 Toringdon Way\nCharlotte\nNC\n28277\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"HTS NOC-Admin"
],
[
"org",
[],
"text",
"Hearst Corporation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-704-348-8000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-21T15:43:38-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-11-14T12:37:51-05:00"
}
],
"handle": "HEARS-2",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HEARS-2",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/36581"
},
{
"href": "https://whois.arin.net/rest/org/HEARS-2",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/36581"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Hearst-Argyle Television, Inc."
],
[
"adr",
{
"label": "888 Seventh Avenue\nNew York\nNY\n10106\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-31T10:22:37-05:00"
},
{
"eventAction": "registration",
"eventDate": "2004-06-10T18:17:07-04:00"
}
],
"handle": "PMC232-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PMC232-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/36581"
},
{
"href": "https://whois.arin.net/rest/poc/PMC232-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/36581"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "3540 Toringdon Way\nCharlotte\nNC\n28277\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Pat McCaskill"
],
[
"n",
[],
"text",
[
"McCaskill",
"Pat",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-704-348-8000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2016-06-16T16:33:46-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-02-02T12:48:14-05:00"
}
],
"handle": "AS36581",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/36581",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/36581"
},
{
"href": "https://whois.arin.net/rest/asn/AS36581",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/36581"
}
],
"name": "WJCL-TV",
"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/36581"
}
],
"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/36581"
}
],
"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": 36581,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.