ASN AS33661 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33661?

AS33661 is listed under Comcast Cable Communications, LLC.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS33661 Comcast Cable Communications, LLC

Comcast Cable Communications, LLC xfinity.com

US 49 Routes

AS Data

AS33661

AS33661 – Comcast Cable Communications, LLC

AS Number	33661
AS Name	CMCS
Organization	Comcast Cable Communications, LLC (cccs)
Country	US
Website	xfinity.com
Number of IPv4 Routes	6
Number of IPv6 Routes	15
ASN type	ISP
Registry	ARIN
Date Allocated	2005-02-16

ASN Intelligence API for production workflows

Use ASN data for AS33661 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Raw Whois Response

#
# 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:       33661
ASName:         CMCS
ASHandle:       AS33661
RegDate:        2005-02-16
Updated:        2021-01-25
Ref:            https://rdap.arin.net/registry/autnum/33661



OrgName:        Comcast Cable Communications, LLC
OrgId:          CCCS
Address:        1800 Bishops Gate Blvd
City:           Mt Laurel
StateProv:      NJ
PostalCode:     08054
Country:        US
RegDate:        2001-09-18
Updated:        2020-11-18
Ref:            https://rdap.arin.net/registry/entity/CCCS


OrgRoutingHandle: ROUTI25-ARIN
OrgRoutingName:   Routing
OrgRoutingPhone:  +1-856-792-2300 
OrgRoutingEmail:  routing@comcast.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI25-ARIN

OrgTechHandle: IC161-ARIN
OrgTechName:   Comcast Cable Communications Inc
OrgTechPhone:  +1-856-792-2300 
OrgTechEmail:  CNIPEO-Ip-registration@cable.comcast.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IC161-ARIN

OrgAbuseHandle: NAPO-ARIN
OrgAbuseName:   Network Abuse and Policy Observance
OrgAbusePhone:  +1-888-565-4329 
OrgAbuseEmail:  abuse@comcast.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NAPO-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.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "33661",
    "as_handle" : "AS33661",
    "as_name" : "CMCS",
    "tech_contacts" : [ "ROUTI25-ARIN", "IC161-ARIN" ],
    "abuse_contacts" : [ "NAPO-ARIN" ],
    "date_created" : "2005-02-16",
    "date_updated" : "2021-01-25",
    "source" : "https://rdap.arin.net/registry/autnum/33661"
  } ],
  "organization" : {
    "handle" : "CCCS",
    "name" : "Comcast Cable Communications, LLC",
    "address" : [ "1800 Bishops Gate Blvd", "Mt Laurel", "NJ", "08054", "US" ],
    "street" : "Bishops Gate Blvd",
    "city" : "Mt Laurel",
    "state" : "NJ",
    "zip_code" : "08054",
    "country" : [ "US" ],
    "date_created" : "2001-09-18",
    "date_updated" : "2020-11-18",
    "source" : "https://rdap.arin.net/registry/entity/CCCS",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ROUTI25-ARIN",
    "name" : "Routing",
    "email" : [ "routing@comcast.com" ],
    "phone" : [ "+1-856-792-2300" ],
    "source" : "https://rdap.arin.net/registry/entity/ROUTI25-ARIN"
  }, {
    "handle" : "IC161-ARIN",
    "name" : "Comcast Cable Communications Inc",
    "email" : [ "CNIPEO-Ip-registration@cable.comcast.com" ],
    "phone" : [ "+1-856-792-2300" ],
    "source" : "https://rdap.arin.net/registry/entity/IC161-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NAPO-ARIN",
    "name" : "Network Abuse and Policy Observance",
    "email" : [ "abuse@comcast.net" ],
    "phone" : [ "+1-888-565-4329" ],
    "source" : "https://rdap.arin.net/registry/entity/NAPO-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS63264	Alternative Choice Wireless, LLC	US
AS46999	Crews Banking Corporation	US
AS26876	chico's fas inc	US
AS398641	Community Health Centers, Inc.	US
AS63402	Universal Orlando	US
AS23542	Florida's Natural Growers, Inc.	US
AS396291	NCH Healthcare System, Inc.	US
AS396910	Lee County Port Authority	US
AS46576	Loews Hotels at Universal Orlando	US
AS398743	The Nemours Foundation	US
AS30415	Sarasota County Government	US
AS401671	ACCESSPARKS LLC	US
AS36040	Google LLC	US
AS53937	Sarasota Memorial Hospital	US
AS54113	Fastly, Inc.	US
AS54119	WhiteSky Communications, LLC.	US
AS395036	City of Sanibel	US
AS17035	NBCUniversal	US
AS36763	Hearst Argyle Television, Inc.	US
AS395659	SeaWorld Parks & Entertainment, Inc.	US
AS6931	Ringling College of Art and Design	US
AS7922	Comcast Cable Communications, LLC	US
AS53445	The Villages Health	US

Upstreams

AS Number	Description	Country
AS7922	Comcast Cable Communications, LLC	US

Downstreams

AS Number	Description	Country
AS63264	Alternative Choice Wireless, LLC	US
AS46999	Crews Banking Corporation	US
AS26876	chico's fas inc	US
AS398641	Community Health Centers, Inc.	US
AS63402	Universal Orlando	US
AS23542	Florida's Natural Growers, Inc.	US
AS396291	NCH Healthcare System, Inc.	US
AS396910	Lee County Port Authority	US
AS46576	Loews Hotels at Universal Orlando	US
AS398743	The Nemours Foundation	US
AS30415	Sarasota County Government	US
AS401671	ACCESSPARKS LLC	US
AS36040	Google LLC	US
AS53937	Sarasota Memorial Hospital	US
AS54113	Fastly, Inc.	US
AS54119	WhiteSky Communications, LLC.	US
AS395036	City of Sanibel	US
AS17035	NBCUniversal	US
AS36763	Hearst Argyle Television, Inc.	US
AS395659	SeaWorld Parks & Entertainment, Inc.	US
AS6931	Ringling College of Art and Design	US
AS53445	The Villages Health	US

Contacts

Email Contacts

routing@comcast.com CNIPEO-Ip-registration@cable.comcast.com

Abuse Contacts

abuse@comcast.net

ASN Lookup Tool

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