ASN Lookup Tool

Comcast Cable Communications, LLC comcast.com US US 251 Routes

AS Data

AS33651

AS33651 – Comcast Cable Communications, LLC

AS Number 33651
AS Name CMCS
Organization Comcast Cable Communications, LLC (cccs)
Country US
Website comcast.com
Number of IPv4 Routes 57
Number of IPv6 Routes 194
ASN type ISP
Registry ARIN
Date Allocated 2005-02-16

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Use ASN data for AS33651 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2001:559:8368::/48 ~1×10²⁴
2001:559:861f::/48 ~1×10²⁴
2001:559:c470::/48 ~1×10²⁴
169.230.77.0/24 256
50.145.55.0/24 256
2001:559:197::/48 ~1×10²⁴
2001:559:83aa::/48 ~1×10²⁴
2001:559:80c3::/48 ~1×10²⁴
2001:559:4ac::/48 ~1×10²⁴
2001:559:c37d::/48 ~1×10²⁴
2001:559:c18d::/48 ~1×10²⁴
2001:559:86dd::/48 ~1×10²⁴
50.229.212.0/24 256
50.216.23.0/24 256
50.233.45.0/24 256
2001:559:84a3::/48 ~1×10²⁴
2001:559:9e::/48 ~1×10²⁴
2001:559:755::/48 ~1×10²⁴
2001:559:866c::/48 ~1×10²⁴
2001:559:8552::/48 ~1×10²⁴
2001:559:55a::/48 ~1×10²⁴
2001:559:c274::/48 ~1×10²⁴
50.207.190.0/24 256
2001:559:3bd::/48 ~1×10²⁴
2001:559:85d4::/48 ~1×10²⁴
2001:559:c084::/48 ~1×10²⁴
2001:559:8343::/48 ~1×10²⁴
2001:559:c11b::/48 ~1×10²⁴
2001:559:c27b::/48 ~1×10²⁴
2001:559:85f3::/48 ~1×10²⁴
2001:559:8647::/48 ~1×10²⁴
2001:559:8261::/48 ~1×10²⁴
50.236.66.0/24 256
192.189.161.0/24 256
216.170.120.0/24 256
2001:559:c560::/48 ~1×10²⁴
2001:559:3be::/48 ~1×10²⁴
2001:559:c0a8::/48 ~1×10²⁴
2001:559:c394::/48 ~1×10²⁴
2001:559:c523::/48 ~1×10²⁴
50.201.8.0/23 512
2001:559:1c0::/48 ~1×10²⁴
2001:559:5ea::/48 ~1×10²⁴
2001:559:8242::/48 ~1×10²⁴
50.206.120.0/23 512
2001:559:8302::/48 ~1×10²⁴
64.84.96.0/21 2048
2001:559:85c8::/48 ~1×10²⁴
2001:559:8529::/48 ~1×10²⁴
2001:559:394::/48 ~1×10²⁴
50.216.212.0/24 256
2001:559:8635::/48 ~1×10²⁴
50.218.46.0/24 256
2001:559:86f4::/48 ~1×10²⁴
2001:559:81de::/48 ~1×10²⁴
2001:559:86ea::/48 ~1×10²⁴
2001:559:c347::/48 ~1×10²⁴
140.89.64.0/18 16384
50.200.170.0/24 256
2001:559:376::/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:       33651
ASName:         CMCS
ASHandle:       AS33651
RegDate:        2005-02-16
Updated:        2021-01-25
Ref:            https://rdap.arin.net/registry/autnum/33651



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
AS11574 San Francisco Baseball Associates LLC US
AS13843 Phoenix American Inc. US
AS46867 Sebastian US
AS5081 CLARE COMPUTER SOLUTIONS US
AS397450 City of Fairfield US
AS395844 LUSD US
AS22414 Craigslist, Inc. US
AS397062 Sun-Maid Growers of California US
AS6099 Alameda County Office of Education US
AS16914 MBH ARCHITECTS US
AS5774 United States Postal Service US
AS40385 Saint Mary's College of California US
AS397258 Graton Resort and Casino US
AS14443 Broadridge Financial Solutions, Inc. US
AS53985 DODGE & COX US
AS32537 Xilinx Incorporated US
AS19126 KIZA US
AS46216 FirmaTRUST Consulting US
AS6379 A Link Network Services, Inc. US
AS396943 City of Sunnyvale US
AS23338 DCS Pacific Star, LLC US
AS26211 Proofpoint, Inc. US
AS22024 Splunk, Inc. US
AS204662 Financiere Kepler SAS FR
AS11941 Pillsbury Madison & Sutro, Inc. US
AS23154 Sanmina SCI Corporation US
AS55064 Arista Networks, Inc. US
AS16758 Ricoh USA, Inc. US
AS55278 California Capital Insurance Company US
AS40620 QIAGEN Redwood City, Inc. US
AS395210 Western Carriers Inc. US
AS11031 Orbis Investments (Canada) Limited CA
AS14388 Bronco Wine Co. US
AS33311 TOPCON POSITIONING SYSTEMS INC US
AS33382 CRYPTIC STUDIOS, INC. US
AS14203 Juniper Networks, Inc. US
AS11620 Succeed.Net US
AS54269 Provident Credit Union US
AS63435 County of Monterey US
AS4182 MLSListings inc. US
AS53497 WebPerception, LLC US
AS394304 Sacramento Downtown Arena, LLC US
AS11829 Cadence Design Systems, Inc. US
AS18695 Bay Medical Management, LLC US
AS25753 California Public Employees' Retirement System US
AS32504 Intelletrace US
AS397620 City of Menlo Park US
AS54654 Mills College US
AS393935 Sierra Central Credit Union US
AS397777 Torani US
AS54474 City of Santa Cruz US
AS398204 City of Stockton US
AS7235 LanMinds, Inc. US
AS396337 Dreisbach Enterprises, Inc. US
AS22369 Cloudmylab.com US
AS11328 Bio-Rad Laboratories, Inc. US
AS46902 California State Teachers Retirement System (CalSTRS) US
AS396484 City of Roseville US
AS399761 Stream IT Networks LLC 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
AS11574 San Francisco Baseball Associates LLC US
AS13843 Phoenix American Inc. US
AS5081 CLARE COMPUTER SOLUTIONS US
AS397450 City of Fairfield US
AS395844 LUSD US
AS6099 Alameda County Office of Education US
AS16914 MBH ARCHITECTS US
AS5774 United States Postal Service US
AS40385 Saint Mary's College of California US

Contacts

Email Contacts

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

Abuse Contacts

abuse@comcast.net

Legacy Routes

9.142.96.0/19 2a0c:1900::/29 5.182.186.0/24 63.246.152.0/24 138.226.48.0/21 5.182.194.0/24 138.226.64.0/20 162.218.89.0/24 103.111.63.0/24 50.222.102.0/24 36.255.215.0/24 103.216.197.0/24 9.142.118.0/23 138.226.196.0/22 185.201.41.0/24 138.226.112.0/21 63.246.148.0/24 63.246.159.0/24 45.67.141.0/24 5.182.193.0/24 185.201.43.0/24 5.182.195.0/24 185.22.43.0/24 78.31.206.0/24 9.142.48.0/20 135.132.64.0/19

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Frequently Asked Questions

ASN AS33651 is an Autonomous System Number used to identify a network for BGP internet routing.
AS33651 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.