Report for 33662

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.

33662 CMCS - Comcast Cable Communications, LLC, US

  Adjacency:    33  Upstream:     1  Downstream:    32
  Upstream Adjacent AS list
    AS7922          COMCAST-7922 - Comcast Cable Communications, LLC, US
  Downstream Adjacent AS list
    AS26093         HAR - Houston Association of Realtors, US
    AS14296         SPRINGFD - Spring Fire Department, US
    AS16903         TIGER-47 - Texas Southern University, US
    AS13913         AFFILIATED - Affiliated Monitoring, Inc., US
    AS17035         NBCUNI-17035 - NBCUniversal, US
    AS18996         CITY-OF-BAYTOWN - City of Baytown, US
    AS20204         NOVOLINK-HOUSTON - NovoLink Communications, Inc. - Houston, US
    AS27206         COSL-01 - City of Sugar Land, US
    AS19195         ASN-MEGLOBAL-OC-01 - MEGLOBAL AMERICAS INC., US
    AS36410         VHAINC-IPNET - Vizient, Inc., US
    AS36026         AS-CHI-CORP - CommonSpirit Health, US
    AS31128         SHAZAM-AS - APPLE DISTRIBUTION INTERNATIONAL LTD., IE
    AS395238        BRAZOSPORTISD-01 - Brazosport Independent School District, US
    AS394977        T2EE-AS1 - TAKE-TWO INTERACTIVE SOFTWARE, INC., US
    AS393355        SISA - SAMSUNG RESEARCH AMERICA, INC., US
    AS36538         SJCNET-ASN - San Jacinto College District, US
    AS399620        NCISD - New Caney ISD, US
    AS397371        HCDE-TEXAS - Harris County Department of Education Public Facil, US
    AS397288        MCREY - McNaughton-McKay Electric Company, US
    AS396849        KPRC - GRAHAM MEDIA GROUP, HOUSTON, INC., US
    AS396272        HOUSTON-TEXANS - Houston Texans, US
    AS400209        BRAZORIA-COUNTY-TX - Brazoria County, US
    AS29703         DEER-PARK-REFINING-LP - Deer Park Refining Limited Partnership, US
    AS40638         PASON-SYSTEMS-USA - Pason Systems USA Corp, US
    AS53571         PCC-CORP - PRECISION CASTPARTS CORP, US
    AS54063         MHHS-AS - Memorial Hermann Health System, US
    AS54457         HCEC-HOUSTON-PRIMARY - Harris County Emergency Corps, US
    AS46094         LEE-COLLEGE - Lee College, US
    AS55291         HARRIS-COUNTY-AS - Harris County, US
    AS54999         TENARIS-NA - Tenaris Global Services (USA) Corp., US
    AS63483         SKYNET-AS-1 - Skynet, US
    AS4057          DCS-ASN - Mechant's Choice Payment Solutions, CA

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
16994 AS33662        ORG+TRN Originate:       4096 /20.00  Transit:      27648 /17.25 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       %
39842 AS33662       CMCS - Comcast Cable Communications, LLC, US      16      0      0     16      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  24.104.75.0/24       4777 2516 7922 33662   
  50.201.112.0/24      4777 2516 7922 33662   
  50.217.18.0/24       4777 2516 7922 33662   
  50.220.66.0/24       4777 2516 7922 33662   
  50.228.10.0/24       4777 2516 7922 33662   
  50.228.194.0/24      4777 2516 7922 33662   
  50.231.217.0/24      4777 2516 7922 33662   
  50.232.18.0/24       4777 2516 7922 33662   
  50.232.206.0/24      4777 2516 7922 33662   
  50.234.8.0/24        4777 2516 7922 33662   
  50.235.195.0/24      4777 2516 7922 33662   
  50.235.196.0/24      4777 2516 7922 33662   
  64.189.25.0/24       4777 2516 7922 33662   
  107.1.148.0/24       4777 2516 7922 33662   
  198.46.65.0/24       4777 2516 7922 33662   
  208.110.207.0/24     4777 2516 7922 33662   

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

AS33662   16 More Specifics   16 Total Advertisements   CMCS - Comcast Cable Communications, LLC, US
    24.104.75.0/24                24.104.0.0/17
    50.201.112.0/24               50.128.0.0/9
    50.217.18.0/24                50.128.0.0/9
    50.220.66.0/24                50.128.0.0/9
    50.228.10.0/24                50.128.0.0/9
    50.228.194.0/24               50.128.0.0/9
    50.231.217.0/24               50.128.0.0/9
    50.232.18.0/24                50.128.0.0/9
    50.232.206.0/24               50.128.0.0/9
    50.234.8.0/24                 50.128.0.0/9
    50.235.195.0/24               50.128.0.0/9
    50.235.196.0/24               50.128.0.0/9
    64.189.25.0/24                64.189.0.0/16
    107.1.148.0/24                107.0.0.0/14
    198.46.65.0/24                198.46.64.0/20
    208.110.207.0/24              208.110.192.0/19
    50.217.175.0/24               50.128.0.0/9

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 50.217.175.0/24             Withdrawn

Whois Entry

whois: 402591

IANA has recorded AS33662 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33662\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:       33662
             ASName:         CMCS
             ASHandle:       AS33662
             RegDate:        2005-02-16
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/33662
             
             
             
             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.
             #