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AS33657
CMCS - Comcast Cable Communications, LLC Announcing routesAS nameCMCS
OrganisationComcast Cable Communications, LLC
Registry (RIR)ARIN
HandleAS33657
RangeAS33657
Registered17 Feb 2005
Last changed26 Jan 2021
Abuse contact[email protected]
29IPv4 prefixes
245IPv6 prefixes
2Upstreams
128Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS7922 | COMCAST-7922 - Comcast Cable Communications, LLC | 7856 |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | 3356 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS11790 | RANDOMHOUSE - Random House, Inc. | 292 |
| AS53350 | EMBHUN-WAS-01 - Embassy of Hungary | 275 |
| AS400902 | WASGN - Gaylord National Resort & Convention Center | 274 |
| AS17190 | ASN17190 - Washington Metropolitan Area Transit Authority | 210 |
| AS394077 | LIFEBRIDGEHEALTH - Lifebridge Health, Inc. | 209 |
| AS26522 | SU-ASN-1 - Stevenson University | 196 |
| AS16881 | DAVID-C-PRALL-INTERNET - Prall, Inc., David C | 187 |
| AS32291 | ANNEARUNDELMEDICALCENTER - ANNE ARUNDEL MEDICAL CENTER | 176 |
| AS27016 | NRC-NET - United States Nuclear Regulatory Commission | 175 |
| AS26868 | NCTA-WASHINGTONDC - NCTA - The Internet & Television Association | 170 |
| AS10918 | ACCURANT - Accurant Cloud Services LLC | 167 |
| AS19936 | GORDONFOODS - Gordon Food Service | 151 |
| AS2703 | — | 149 |
| AS11951 | MCSP - Medical Computer Systems | 146 |
| AS20137 | USAGM-LAN - USAGM | 145 |
IPv4 prefixes (29)
50.223.158.0/2450.232.109.0/24192.189.235.0/2450.202.117.0/2450.226.61.0/2450.204.128.0/2450.236.234.0/2469.67.80.0/2050.218.16.0/2450.232.184.0/2450.235.98.0/2450.201.252.0/2450.204.116.0/2450.219.87.0/2450.223.159.0/2450.202.155.0/24208.87.105.0/2450.236.38.0/24192.110.220.0/23107.1.101.0/2450.224.212.0/2450.203.251.0/2450.216.214.0/2450.207.162.0/2450.205.74.0/2450.232.173.0/2476.78.2.0/2450.238.163.0/2450.235.236.0/24
IPv6 prefixes (245)
2001:559:85a7::/482001:559:c32e::/482001:559:82c9::/482001:559:488::/482001:559:48::/482001:559:847a::/482001:559:4a5::/482001:559:84af::/482001:559:8215::/482001:559:5cb::/482001:559:7e6::/482001:559:837f::/482001:559:816d::/482001:559:85bc::/482001:559:c012::/482001:559:5cd::/482001:559:7d0::/482001:559:3dc::/482001:559:491::/482001:559:191::/482001:559:8786::/482001:559:87f5::/482001:559:2ca::/482001:559:857f::/482001:559:c0c2::/482001:559:81b5::/482001:559:8419::/482001:559:869c::/482001:559:8794::/482001:559:8263::/482001:559:c388::/482001:559:832a::/482001:559:737::/482001:559:816a::/482001:559:c209::/482001:559:814f::/482001:559:c141::/482001:559:8728::/482001:559:c478::/482001:559:288::/482001:559:8617::/482001:559:c4bf::/482001:559:25b::/482001:559:85ec::/482001:559:8336::/482001:559:8041::/482001:559:489::/482001:559:c320::/482001:559:c2d9::/482001:559:c4a7::/482001:559:80e9::/482001:559:8140::/482001:559:87cc::/482001:559:c277::/482001:559:803f::/482001:559:846a::/482001:559:8740::/482001:559:84be::/482001:559:42c::/482001:559:874f::/482001:559:70d::/482001:559:c1b5::/482001:559:c221::/482001:559:c3d6::/482001:559:574::/482001:559:8338::/482001:559:c0c4::/482001:559:414::/482001:559:8396::/482001:559:c468::/482001:559:c351::/482001:559:c572::/482001:559:c2b1::/482001:559:c3c4::/482001:559:1f8::/482001:559:2cb::/482001:559:808e::/482001:559:836f::/482001:559:c4f7::/482001:559:c305::/482001:559:8213::/482001:559:80c2::/482001:559:85cd::/482001:559:841d::/482001:559:30d::/482001:559:80fd::/482001:559:c4f8::/482001:559:8726::/482001:559:c516::/482001:559:5d3::/482001:559:300::/482001:559:865b::/482001:559:c30a::/482001:559:8331::/482001:559:c3f3::/482001:559:c15e::/482001:559:8040::/482001:559:c342::/482001:559:c4d9::/482001:559:c39d::/482001:559:8212::/482001:559:c438::/482001:559:c180::/482001:559:805e::/482001:559:82d8::/482001:559:c365::/482001:559:ae::/482001:559:718::/482001:559:2f3::/482001:559:5ef::/482001:559:84e1::/482001:559:c2c6::/482001:559:db::/482001:559:c2b0::/482001:559:c1a1::/482001:559:8171::/482001:559:80f5::/482001:559:c29f::/482001:559:a2::/482001:559:8380::/482001:559:588::/482001:559:85ab::/482001:559:7be::/482001:559:8510::/482001:559:75e::/482001:559:c505::/482001:559:136::/482001:559:c44d::/482001:559:83eb::/482001:559:c42a::/482001:559:721::/482001:559:319::/482001:559:8262::/482001:559:3ca::/482001:559:8061::/482001:559:833a::/482001:559:80d3::/482001:559:810e::/482001:559:80b5::/482001:559:c349::/482001:559:c4b0::/482001:559:548::/482001:559:724::/482001:559:800a::/482001:559:304::/482001:559:841b::/482001:559:87::/482001:559:7a1::/482001:559:847e::/482001:559:c133::/482001:559:80b1::/482001:559:84bc::/482001:559:c098::/482001:559:8154::/482001:559:849f::/482001:559:c390::/482001:559:87b4::/482001:559:c379::/482001:559:4a0::/482001:559:3eb::/482001:559:8582::/482001:559:c1f0::/482001:559:835c::/482001:559:c3d3::/482001:559:83b9::/482001:559:7e9::/482001:559:c1d3::/482001:559:834c::/482001:559:c454::/482001:559:8581::/482001:559:794::/482001:559:c1b8::/482001:559:110::/482001:559:86ba::/482001:559:43a::/482001:559:3ba::/482001:559:282::/482001:559:c06a::/482001:559:875e::/482001:559:84cc::/482001:559:74b::/482001:559:c307::/482001:559:c2a0::/482001:559:80cb::/482001:559:c0c3::/482001:559:81f0::/482001:559:5b7::/482001:559:7e5::/482001:559:c05b::/482001:559:8141::/482001:559:857e::/482001:559:758::/482001:559:380::/482001:559:85e4::/482001:559:c3ea::/482001:559:1f0::/482001:559:865a::/482001:559:c130::/482001:559:4a8::/482001:559:2b6::/482001:559:c43e::/482001:559:1da::/482001:559:85f0::/482001:559:869b::/482001:559:3f1::/482001:559:c48f::/482001:559:8161::/482001:559:8090::/482001:559:8180::/482001:559:3d2::/482001:559:7e2::/482001:559:874d::/482001:559:45a::/482001:559:8444::/482001:559:714::/482001:559:214::/482001:559:8682::/482001:559:84de::/482001:559:8247::/482001:559:8722::/482001:559:c3f2::/482001:559:816b::/482001:559:81ca::/482001:559:246::/482001:559:864a::/482001:559:81ff::/482001:559:16a::/482001:559:8779::/482001:559:c37a::/482001:559:80b0::/482001:559:8583::/482001:559:c4b8::/482001:559:c3b0::/482001:559:202::/482001:559:c178::/482001:559:7fe::/482001:559:25a::/482001:559:c2e2::/482001:559:c54f::/482001:559:7a::/482001:559:80fc::/482001:559:840d::/482001:559:8516::/482001:559:c140::/482001:559:284::/48
RPKI-validate all prefixes of AS33657
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Comcast Cable Communications, LLC | CCCS | 1800 Bishops Gate Blvd, Mt Laurel, NJ, 08054, United States | |
| abuse | Network Abuse and Policy Observance | NAPO-ARIN | [email protected], +1-888-565-4329 | 1800 Bishops Gate Blvd, Mount Laurel, NJ, 08054, United States |
| routing | Routing | ROUTI25-ARIN | [email protected], +1-856-792-2300 | 1800 Bishops Gate Blvd, Mt Laurel, NJ, 08054, United States |
| technical, administrative | Comcast Cable Communications Inc | IC161-ARIN | [email protected], +1-856-792-2300 | 1800 Bishops Gate Blvd, Mount Laurel, NJ, 08054, United States |
Raw registry response
{
"endAutnum": 33657,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-21T11:13:31-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-09-30T17:45:14-04:00"
}
],
"handle": "NAPO-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NAPO-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33657"
},
{
"href": "https://whois.arin.net/rest/poc/NAPO-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33657"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"This contact is to be used for network abuse, spam/phishing, and legally constituted requests for information or action. It is not for any other purpose."
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1800 Bishops Gate Blvd\nMount Laurel\nNJ\n08054\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Abuse and Policy Observance"
],
[
"org",
[],
"text",
"Comcast Cable Communications, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-888-565-4329"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-02T12:36:43-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-11-18T14:40:04-05:00"
}
],
"handle": "ROUTI25-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ROUTI25-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33657"
},
{
"href": "https://whois.arin.net/rest/poc/ROUTI25-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33657"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Issues related to Routing, RPKI, Route Registry.",
"Not monitored 24/7.",
"Please email, there is no available phone number."
],
"title": "Registration Comments"
}
],
"roles": [
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1800 Bishops Gate Blvd\nMt Laurel\nNJ\n08054\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Routing"
],
[
"org",
[],
"text",
"Comcast"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-856-792-2300"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-21T12:18:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-06-12T11:30:41-04:00"
}
],
"handle": "IC161-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IC161-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33657"
},
{
"href": "https://whois.arin.net/rest/poc/IC161-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33657"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"This is not an Abuse, Spam, or Legal notification POC.",
"Please use [email protected] for all security, takedown, and emergency issues. This IP Registration address cannot address those issues.",
"Please email, there is no available phone number."
],
"title": "Registration Comments"
}
],
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1800 Bishops Gate Blvd\nMount Laurel\nNJ\n08054\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Comcast Cable Communications Inc"
],
[
"org",
[],
"text",
"Comcast Cable Communications, Inc."
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-856-792-2300"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2020-11-18T14:58:28-05:00"
},
{
"eventAction": "registration",
"eventDate": "2001-09-18T00:00:00-04:00"
}
],
"handle": "CCCS",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CCCS",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33657"
},
{
"href": "https://whois.arin.net/rest/org/CCCS",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33657"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Comcast Cable Communications, LLC"
],
[
"adr",
{
"label": "1800 Bishops Gate Blvd\nMt Laurel\nNJ\n08054\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-01-25T15:25:00-05:00"
},
{
"eventAction": "registration",
"eventDate": "2005-02-16T14:59:31-05:00"
}
],
"handle": "AS33657",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/33657",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33657"
},
{
"href": "https://whois.arin.net/rest/asn/AS33657",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33657"
}
],
"name": "CMCS",
"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/33657"
}
],
"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/33657"
}
],
"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": 33657,
"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.