ASN Lookup Tool

Comcast Cable Communications, LLC comcast.com US US 271 Routes

AS Data

AS33657

AS33657 – Comcast Cable Communications, LLC

AS Number 33657
AS Name CMCS
Organization Comcast Cable Communications, LLC (cccs)
Country US
Website comcast.com
Number of IPv4 Routes 29
Number of IPv6 Routes 242
ASN type ISP
Registry ARIN
Date Allocated 2005-02-16

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Use ASN data for AS33657 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2001:559:c365::/48 ~1×10²⁴
2001:559:847e::/48 ~1×10²⁴
208.87.105.0/24 256
2001:559:4a0::/48 ~1×10²⁴
2001:559:c454::/48 ~1×10²⁴
2001:559:5cd::/48 ~1×10²⁴
2001:559:864a::/48 ~1×10²⁴
2001:559:80fc::/48 ~1×10²⁴
2001:559:c305::/48 ~1×10²⁴
2001:559:c2b0::/48 ~1×10²⁴
2001:559:857f::/48 ~1×10²⁴
2001:559:c43e::/48 ~1×10²⁴
2001:559:2b6::/48 ~1×10²⁴
2001:559:8262::/48 ~1×10²⁴
2001:559:c1d3::/48 ~1×10²⁴
50.204.116.0/24 256
2001:559:c3c4::/48 ~1×10²⁴
2001:559:377::/48 ~1×10²⁴
2001:559:c15e::/48 ~1×10²⁴
2001:559:c0c6::/48 ~1×10²⁴
69.67.80.0/20 4096
50.207.162.0/24 256
2001:559:8161::/48 ~1×10²⁴
2001:559:80f5::/48 ~1×10²⁴
2001:559:3ca::/48 ~1×10²⁴
107.1.101.0/24 256
50.204.128.0/24 256
2001:559:304::/48 ~1×10²⁴
2001:559:875e::/48 ~1×10²⁴
2001:559:87b4::/48 ~1×10²⁴
2001:559:c098::/48 ~1×10²⁴
2001:559:8786::/48 ~1×10²⁴
2001:559:c4a7::/48 ~1×10²⁴
2001:559:246::/48 ~1×10²⁴
2001:559:c2b1::/48 ~1×10²⁴
2001:559:8380::/48 ~1×10²⁴
2001:559:834c::/48 ~1×10²⁴
2001:559:8090::/48 ~1×10²⁴
2001:559:2ca::/48 ~1×10²⁴
2001:559:8666::/48 ~1×10²⁴
2001:559:81f0::/48 ~1×10²⁴
50.236.234.0/24 256
2001:559:c39d::/48 ~1×10²⁴
2001:559:489::/48 ~1×10²⁴
2001:559:c1b5::/48 ~1×10²⁴
2001:559:16a::/48 ~1×10²⁴
2001:559:282::/48 ~1×10²⁴
2001:559:80cb::/48 ~1×10²⁴
2001:559:c478::/48 ~1×10²⁴
2001:559:833a::/48 ~1×10²⁴
2001:559:548::/48 ~1×10²⁴
2001:559:c133::/48 ~1×10²⁴
2001:559:82d8::/48 ~1×10²⁴
2001:559:c388::/48 ~1×10²⁴
2001:559:2f3::/48 ~1×10²⁴
2001:559:721::/48 ~1×10²⁴
50.235.98.0/24 256
2001:559:8510::/48 ~1×10²⁴
2001:559:8041::/48 ~1×10²⁴
2001:559:574::/48 ~1×10²⁴

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:       33657
ASName:         CMCS
ASHandle:       AS33657
RegDate:        2005-02-16
Updated:        2021-01-25
Ref:            https://rdap.arin.net/registry/autnum/33657



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


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

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

Peers

AS Number Description Country
AS54201 We Link Networks LLC US
AS36457 District Photo, Inc. US
AS21963 Agency Insurance Company US
AS36486 AMTOTE INTERNATIONAL, INC. US
AS63336 Adventist Healthcare US
AS19936 Gordon Food Service US
AS393997 Red Coats, Inc US
AS22593 Blue Cross and Blue Shield of North Carolina US
AS22414 Craigslist, Inc. US
AS395481 i SW, LLC US
AS396222 Tenable, Inc. US
AS3705 U.S. Government Publishing Office US
AS27016 United States Nuclear Regulatory Commission US
AS400678 LIDL US OPERATIONS, LLC US
AS22596 UNIVERSAL HEALTH SERVICES US
AS11362 Vector Data Systems LLC US
AS398820 Eagle Alliance US
AS11131 University of Maryland Baltimore County UMBC US
AS53350 Embassy of Hungary US
AS54849 Kane Warehousing, Inc US
AS14862 Oceaneering International, Inc. US
AS32291 ANNE ARUNDEL MEDICAL CENTER US
AS16463 Data Processing Solutions, Inc. US
AS10440 Merkle Inc. US
AS46988 Maryland Institute College of Art US
AS15134 Prince William County Service Authority US
AS16881 Prall, Inc., David C US
AS33170 Morgan State University US
AS397487 Baltimore Ravens Limited Partnership US
AS4902 CONSERVATION INTERNATIONAL FOUNDATION US
AS22613 UNIVERSAL HEALTH SERVICES US
AS14830 ProFund Advisors LLC US
AS40833 The New York Times Company US
AS16409 PBW Communications, LLC US
AS53302 Baltimore County Government US
AS22694 Versant Media Group, Inc. US
AS13582 Cowan Systems, LLC US
AS42228 Brightstar Limited GB
AS13628 AMERISOURCEBERGEN US
AS2384 Architect of the Capitol US
AS11951 Medical Computer Systems US
AS40857 IT CNP, Inc. US
AS14384 HOST DESIGNS, LLC US
AS395973 Google LLC US
AS26868 NCTA - The Internet & Television Association US
AS6092 Harford Community College US
AS3573 Accenture LLP US
AS46784 Davis Polk & Wardwell, LLP US
AS36040 Google LLC US
AS26114 Anaplan, Inc. US
AS21706 Kellogg, Huber, Hansen, Todd & Evans, PLLC US
AS394024 American Speech Language Hearing Association US
AS17190 Washington Metropolitan Area Transit Authority US
AS394112 NTT Global Data Centers Americas, INC. US
AS25716 Trane Technologies Company LLC US
AS401533 TGS, LLC US
AS18733 ZeniMax Media Incorporated US
AS40954 JM Family Enterprises Inc. US
AS32837 Williams & Connolly, LLP US
AS30641 STATE OF DELAWARE US

Upstreams

AS Number Description Country
AS3356 Level 3 Parent, LLC US
AS7922 Comcast Cable Communications, LLC US

Downstreams

AS Number Description Country
AS54201 We Link Networks LLC US
AS36457 District Photo, Inc. US
AS21963 Agency Insurance Company US
AS36486 AMTOTE INTERNATIONAL, INC. US
AS63336 Adventist Healthcare US
AS19936 Gordon Food Service US
AS393997 Red Coats, Inc US
AS22593 Blue Cross and Blue Shield of North Carolina US
AS22414 Craigslist, Inc. US
AS395481 i SW, LLC US

Contacts

Email Contacts

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

Abuse Contacts

abuse@comcast.net

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Frequently Asked Questions

ASN AS33657 is an Autonomous System Number used to identify a network for BGP internet routing.
AS33657 is listed under Comcast Cable Communications, LLC.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.