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AS33588
BRESNAN-33588 - Charter Communications LLC Announcing routesAS nameBRESNAN-33588
OrganisationCharter Communications LLC
Registry (RIR)ARIN
HandleAS33588
RangeAS33588
Registered28 Jan 2005
Last changed21 Nov 2018
Abuse contact[email protected]
39IPv4 prefixes
13IPv6 prefixes
2Upstreams
12Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS20115 | CHARTER-20115 - Charter Communications LLC | 2946 |
| AS7843 | TWC-7843-BB - Charter Communications Inc | 238 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS395251 | BHS-MT - Benefis Health System | 391 |
| AS19115 | CHARTER-19115-DC - Charter Communications LLC | 292 |
| AS402935 | CITY-OF-BELGRADE-MT - City | 277 |
| AS25816 | TOURO - Touro College | 239 |
| AS401920 | MOW-MT - Montana Outback Wireless Inc. | 239 |
| AS62817 | BARRETTHOSPITAL - BARRETT HOSPITAL AND HEALHCARE | 231 |
| AS394913 | AIRGRIDS - AirGrids | 228 |
| AS26450 | CTDI-WC - CTDI | 213 |
| AS393367 | SJMC-TCHD-3 - Teton County Hospital District | 202 |
| AS13590 | MDMH - Marcus Daly Memorial Hospital Corporation | 125 |
| AS393657 | COLORADOMESAUNIVERSITY - Colorado Mesa University | 114 |
| AS32146 | COB-MT - City of Bozeman | 68 |
IPv4 prefixes (39)
76.58.56.0/2335.132.48.0/20172.221.64.0/1847.45.128.0/1735.134.192.0/1869.146.0.0/1647.44.112.0/2047.231.228.0/22159.111.0.0/2172.174.0.0/15173.40.192.0/20137.26.64.0/18159.111.12.0/22159.111.16.0/20192.61.208.0/2171.85.191.0/2435.151.208.0/20150.181.24.0/2369.144.0.0/15192.61.255.0/2471.15.192.0/1947.5.0.0/17159.111.8.0/2247.28.192.0/1835.131.32.0/1935.132.32.0/2447.47.128.0/1835.132.0.0/24150.224.249.0/24150.181.91.0/2435.133.0.0/18174.45.0.0/16192.61.246.0/2398.127.0.0/16150.181.26.0/2435.150.64.0/1875.143.192.0/1947.37.0.0/18184.166.0.0/15
IPv6 prefixes (13)
RPKI-validate all prefixes of AS33588
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Charter Communications LLC | CC04 | 6175 S. Willow Dr, Greenwood Village, CO, 80111, United States | |
| administrative, technical | IPAddressing | IPADD1-ARIN | [email protected], +1-866-248-7662 | 6175 South Willow Drive, Greenwood Village, CO, 80111, United States |
| abuse | Abuse | ABUSE19-ARIN | [email protected], +1-877-777-2263 | P.O. Box 4987, Greenwood Village, CO, 80155, United States |
Raw registry response
{
"endAutnum": 33588,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-03T08:17:40-05:00"
},
{
"eventAction": "registration",
"eventDate": "2002-09-10T11:10:50-04:00"
}
],
"handle": "IPADD1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IPADD1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33588"
},
{
"href": "https://whois.arin.net/rest/poc/IPADD1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33588"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"IP Addressing is used for corporate IP allocation and administration, we are unable to provide or reply to inquires regarding specific IP address lookups or subscriber information. ",
"",
"Law Enforcement Officials please visit: https://www.spectrum.com/policies/lea for assistance on subpoena, identification, and escalations. This information is for Law Enforcement officials only."
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "6175 South Willow Drive\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"IPAddressing"
],
[
"org",
[],
"text",
"Charter Communications"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-866-248-7662"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-13T10:17:22-05:00"
},
{
"eventAction": "registration",
"eventDate": "2002-08-30T12:51:43-04:00"
}
],
"handle": "ABUSE19-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE19-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33588"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE19-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33588"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"",
" All reports of general abuse issues originating from Charter owned IP space should be reported to [email protected]. General abuse issues can be but not limited to spam, hacking, malware, and other abuse related issues.",
"",
" Additional information can be found at : https://www.spectrum.net/support/general/reporting-internet-abuse",
"",
" The information provided is to resolve network abuse and related issues only, all other inquiries will not be supported."
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "P.O. Box 4987\nGreenwood Village\nCO\n80155\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"Charter Communications"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-877-777-2263"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-10T10:56:59-05:00"
}
],
"handle": "CC04",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CC04",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33588"
},
{
"href": "https://whois.arin.net/rest/org/CC04",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33588"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Charter Communications LLC"
],
[
"adr",
{
"label": "6175 S. Willow Dr\nGreenwood Village\nCO\n80111\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2018-11-20T14:30:53-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-01-27T16:00:44-05:00"
}
],
"handle": "AS33588",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/33588",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33588"
},
{
"href": "https://whois.arin.net/rest/asn/AS33588",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33588"
}
],
"name": "BRESNAN-33588",
"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/33588"
}
],
"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/33588"
}
],
"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": 33588,
"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.