Report for 33660

Name

CMCS - Comcast Cable Communications, LLC, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

33660 CMCS - Comcast Cable Communications, LLC, US

  Adjacency:    31  Upstream:     1  Downstream:    30
  Upstream Adjacent AS list
    AS7922          COMCAST-7922 - Comcast Cable Communications, LLC, US
  Downstream Adjacent AS list
    AS14149         ICONFITNESS-MAIN - Icon Health & Fitness Inc, US
    AS393917        CVE - Cache Valley Electric Company, US
    AS63169         BMA - BMA MANAGEMENT SUPPORT CORPORATION, US
    AS11052         IHC-NET - Intermountain Health Care, Inc., US
    AS11396         TWC-ASN - Williams Information Technology LLC, US
    AS17150         AFCU - America First Credit Union, US
    AS19648         LDSCHURCH1 - Corporation of the Presiding Bishop of the Church of Jesus Christ of Latter-day Saints, US
    AS19477         FLYINGJ - F J Management Inc., US
    AS23154         SANMINA-SCI - Sanmina-SCI Corporation, US
    AS17206         MOUNTAIN-AMERICA - Mountain America Credit Union, US
    AS16785         USANA-INC - USANA Inc, US
    AS33741         DENNIS-GROUP - Dennis Group, US
    AS33173         MYGN-US - Myriad Genetics Incorporated, US
    AS393541        ESS-CORP - EXTRA SPACE STORAGE, US
    AS394185        BOU-BANCORP - Bank of Utah, US
    AS393940        ULTRADENT-PRODUCTS - Ultradent Products Inc, US
    AS399421        EMI-HEALTH - EDUCATORS MUTUAL INSURANCE ASSOCIATION, US
    AS400988        SLCO-ASN-01 - Salt Lake County, US
    AS400284        LTP-USDC-FO-01 - Lifetime Products, Inc., US
    AS399965        UTAH-JAZZ - Jazz Basketball Investors LLC, US
    AS397612        ANX - ARCHITECTURAL NEXUS, INC, US
    AS393459        DOMOINC772 - Domo, Inc., US
    AS27178         HSPS-HQ - Practice Management Technologies and Services, US
    AS54629         AFSTORES-AS - Associated Food Stores, Inc., US
    AS54977         MERITMEDICAL - Merit Medical Systems, Inc, US
    AS55251         TAXHAWK-AS - TaxHawk, Inc., US
    AS54308         RETOUCHUP - RETOUCHUP.COM, US
    AS40644         IFS - Integra Financial Services, LLC, US
    AS23389         CAMPBELL-SCIENTIFIC - Campbell Scientific, Inc., US
    AS10786         CHARTWAY-FCU - Chartway Federal Credit Union, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
22142 AS33660        ORG+TRN Originate:       2560 /20.68  Transit:      13824 /18.25 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       %
21894 AS33660       CMCS - Comcast Cable Communications, LLC, US      10      2      1      9      1  10.00%


  Prefix               AS Path                              Aggregation Suggestion
  50.204.89.0/24       4777 2516 7922 33660   
  50.207.68.0/24       4777 2516 7922 33660   
  50.217.32.0/24       4777 2516 7922 33660   
  50.222.146.0/24      4777 2516 7922 33660   
  50.222.157.0/24      4777 2516 7922 33660   
  50.224.25.0/24       4777 2516 7922 33660   
  50.237.123.0/24      4777 2516 7922 33660   
  129.134.166.0/23     4777 2516 7922 33660 + Announce - aggregate of 129.134.166.0/24 (4777 2516 7922 33660) and 129.134.167.0/24 (4777 2516 7922 33660)
  129.134.166.0/24     4777 2516 7922 33660 - Withdrawn - aggregated with 129.134.167.0/24 (4777 2516 7922 33660)
  129.134.167.0/24     4777 2516 7922 33660 - Withdrawn - aggregated with 129.134.166.0/24 (4777 2516 7922 33660)
  192.16.177.0/24      4777 2516 7922 33660   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS33660   9 More Specifics   10 Total Advertisements   CMCS - Comcast Cable Communications, LLC, US
    50.204.89.0/24                50.128.0.0/9
    50.207.68.0/24                50.128.0.0/9
    50.217.32.0/24                50.128.0.0/9
    50.222.146.0/24               50.128.0.0/9
    50.222.157.0/24               50.128.0.0/9
    50.224.25.0/24                50.128.0.0/9
    50.237.123.0/24               50.128.0.0/9
    129.134.166.0/24              129.134.0.0/16
    129.134.167.0/24              129.134.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS33660 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33660\n             
             #
             # 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:       33660
             ASName:         CMCS
             ASHandle:       AS33660
             RegDate:        2005-02-16
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/33660
             
             
             
             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.
             #