ASN AS33656 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33656?

AS33656 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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS33656 Comcast Cable Communications, LLC

ASN Lookup Tool

Comcast Cable Communications, LLC xfinity.com

US 16 Routes

AS Data

AS33656

AS33656 – Comcast Cable Communications, LLC

AS Number	33656
AS Name	CMCS
Organization	Comcast Cable Communications, LLC (cccs)
Country	US
Website	xfinity.com
Number of IPv4 Routes	0
Number of IPv6 Routes	7
ASN type	ISP
Registry	ARIN
Date Allocated	2005-02-16

ASN Intelligence API for production workflows

Use ASN data for AS33656 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:       33656
ASName:         CMCS
ASHandle:       AS33656
RegDate:        2005-02-16
Updated:        2021-01-25
Ref:            https://rdap.arin.net/registry/autnum/33656



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" : "33656",
    "as_handle" : "AS33656",
    "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/33656"
  } ],
  "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
AS398111	Maverick Transportation, LLC	US
AS7922	Comcast Cable Communications, LLC	US

Upstreams

AS Number	Description	Country
AS7922	Comcast Cable Communications, LLC	US

Downstreams

AS Number	Description	Country
AS398111	Maverick Transportation, LLC	US

Contacts

Email Contacts

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

Abuse Contacts

abuse@comcast.net