33661 CMCS - Comcast Cable Communications, LLC, US
Adjacency: 15 Upstream: 1 Downstream: 14
Upstream Adjacent AS list
AS7922 COMCAST-7922 - Comcast Cable Communications, LLC, US
Downstream Adjacent AS list
AS17035 NBCUNI-17035 - NBCUniversal, US
AS30415 SCG-BGP01 - Sarasota County Government, US
AS36763 WBBH - Hearst-Argyle Television, Inc., US
AS398641 CHCFLORG-001 - Community Health Centers, Inc., US
AS46576 LOEWS-HOTELS-ORLANDO - Loews Hotels at Universal Orlando, US
AS395036 CITYOFSANIBEL - City of Sanibel, US
AS36040 YOUTUBE - Google LLC, US
AS53937 SMH-AS-NO - Sarasota Memorial Hospital, US
AS54119 WHITESKY-COMMUNICATIONS-2 - WhiteSky Communications, LLC., US
AS46999 CREWSBANKCORP - Crews Banking Corporation, US
AS6931 RINGLING - Ringling College of Art and Design, US
AS63402 UCDP-ORLCORP - Universal Orlando, US
AS63264 ACW-ASN - Alternative Choice Wireless, LLC, US
AS26876 CHICOS - chicos fas inc, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 29258 AS33661 ORG+TRN Originate: 1792 /21.19 Transit: 8960 /18.87 CMCS - Comcast Cable Communications, LLC, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 40505 AS33661 CMCS - Comcast Cable Communications, LLC, US 7 0 0 7 0 0.00% Prefix AS Path Aggregation Suggestion 50.218.97.0/24 4777 2516 7922 33661 50.220.33.0/24 4777 2516 7922 33661 50.226.0.0/24 4777 2516 7922 33661 50.227.97.0/24 4777 2516 7922 33661 50.228.116.0/24 4777 2516 7922 33661 50.236.155.0/24 4777 2516 7922 33661 50.237.76.0/24 4777 2516 7922 33661
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS33661 7 More Specifics 7 Total Advertisements CMCS - Comcast Cable Communications, LLC, US
50.218.97.0/24 50.128.0.0/9
50.220.33.0/24 50.128.0.0/9
50.226.0.0/24 50.128.0.0/9
50.227.97.0/24 50.128.0.0/9
50.228.116.0/24 50.128.0.0/9
50.236.155.0/24 50.128.0.0/9
50.237.76.0/24 50.128.0.0/9
whois: 402332
IANA has recorded AS33661 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS33661\n
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# available at: https://www.arin.net/resources/registry/whois/tou/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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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
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.
#