ASN AS33668 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33668?

AS33668 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.

AS33668 Comcast Cable Communications, LLC

ASN Lookup Tool

Comcast Cable Communications, LLC comcast.com

US 97 Routes

AS Data

AS33668

AS33668 – Comcast Cable Communications, LLC

AS Number	33668
AS Name	CMCS
Organization	Comcast Cable Communications, LLC(cccs)
Country	US
Website	comcast.com
Number of IPv4 Routes	27
Number of IPv6 Routes	70
ASN type	ISP
Registry	ARIN
Date Allocated	2005-02-16

ASN Intelligence API for production workflows

Use ASN data for AS33668 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

Route	Origin	Origin Name	ISP	# IPs
2001:559:86cd::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
2001:559:c3aa::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
2001:559:82f7::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
50.226.70.0/24	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	256
2001:559:3fe::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
2001:559:84c0::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
157.240.135.0/24	AS33668	Comcast Cable Communications, LLC	Facebook, Inc.	256
50.221.158.0/24	AS33668	Comcast Cable Communications, LLC	Comcast Private Customer	256
2001:559:391::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~1×10²⁴
2001:559:10d::/48	AS33668	Comcast Cable Communications, LLC	Comcast Cable Communications, LLC	~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:       33668
ASName:         CMCS
ASHandle:       AS33668
RegDate:        2005-02-16
Updated:        2021-01-25    
Ref:            https://rdap.arin.net/registry/autnum/33668



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


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

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


#
# 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
AS33145	Bethany Christian Services	US
AS35928	BECKMAN COULTER, INC.	US
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS21970	PCE Systems	US
AS397288	McNaughton-McKay Electric Company	US
AS400315	Cold Heading Company	US
AS12088	North American Bancard, LLC	US
AS393663	Acument Global Technologies, Inc.	US
AS32477	Otava, LLC	US
AS32285	Henry Ford College	US

Upstreams

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

Downstreams

AS Number	Description	Country
AS33145	Bethany Christian Services	US
AS35928	BECKMAN COULTER, INC.	US
AS21970	PCE Systems	US
AS400315	Cold Heading Company	US
AS12088	North American Bancard, LLC	US
AS393663	Acument Global Technologies, Inc.	US
AS32477	Otava, LLC	US
AS32285	Henry Ford College	US
AS54946	Metro Health	US
AS395614	City of Lansing	US