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 AS6447) 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, US

  Adjacency:    51  Upstream:     2  Downstream:    49
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS7922          COMCAST-7922, US
  Downstream Adjacent AS list
    AS16746         RELIANTENERGY, US
    AS18996         CITY-OF-BAYTOWN, US
    AS19426         HARRIS-COUNTY-ESD11-01, US
    AS22403         TRINICOM, US
    AS23280         VENN, US
    AS396162        ANICO-3030, US
    AS397371        HCDE-TEXAS, US
    AS399698        TRAVELWIFI, US
    AS11135         CROSS-DEVELOPMENT-MONTGOMERY, US
    AS396927        MCCUHOUTX, US
    AS54808         SUN-COAST-RESOURCES, US
    AS13423         GALVESTONISD, US
    AS23154         SANMINA-SCI, US
    AS32861         MACQUARIE-GLOBAL-SERVICES-USA-LLC, US
    AS27206         COSL-01, US
    AS46209         GHC911, US
    AS2386          INS-AS, US
    AS55291         HARRIS-COUNTY-AS, US
    AS400133        DENVR-DATAWORKS-01, CA
    AS14010         JACKHENRY, US
    AS395238        BRAZOSPORTISD-01, US
    AS393355        SISA, US
    AS40638         PASON-SYSTEMS-USA, US
    AS14296         SPRINGFD, US
    AS16903         TIGER-47, US
    AS13913         AFFILIATED, US
    AS17035         NBCUNI-17035, US
    AS20204         NOVOLINK-HOUSTON, US
    AS2134          GSVNET-AS GS Virtual Network Produban, ES
    AS26093         HAR, US
    AS19195         ASN-MEGLOBAL-OC-01, US
    AS36410         VHAINC-IPNET, US
    AS36026         AS-CHI-CORP, US
    AS31128         SHAZAM-AS, IE
    AS394977        T2EE-AS1, US
    AS36538         SJCNET-ASN, US
    AS399620        NCISD, US
    AS397288        MCREY, US
    AS396849        KPRC, US
    AS396272        HOUSTON-TEXANS, US
    AS400209        BRAZORIA-COUNTY-TX, US
    AS29703         DEER-PARK-REFINING-LP, US
    AS53571         PCC-CORP, US
    AS54063         MHHS-AS, US
    AS54457         HCEC-HOUSTON-PRIMARY, US
    AS46094         LEE-COLLEGE, US
    AS54999         TENARIS-NA, US
    AS63483         SKYNET-AS-1, US
    AS4057          DCS-ASN, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
16408 AS33662        ORG+TRN Originate:       4352 /19.91  Transit:      22272 /17.56 CMCS, 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       %
40273 AS33662       CMCS, US                                          17      0      0     17      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  24.104.75.0/24       3257 7922 33662        
  50.201.112.0/24      3257 7922 33662        
  50.217.18.0/24       3257 7922 33662        
  50.217.175.0/24      3257 7922 33662        
  50.220.66.0/24       6939 7922 33662        
  50.228.10.0/24       3257 7922 33662        
  50.228.194.0/24      3257 7922 33662        
  50.231.217.0/24      6939 7922 33662        
  50.232.18.0/24       3257 7922 33662        
  50.232.206.0/24      3257 7922 33662        
  50.234.8.0/24        6939 7922 33662        
  50.235.195.0/24      3257 7922 33662        
  50.235.196.0/24      3257 7922 33662        
  64.189.25.0/24       7018 7922 33662        
  107.1.148.0/24       3257 7922 33662        
  198.46.65.0/24       7018 7922 33662        
  208.110.207.0/24     3257 7922 33662        

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

AS33662   33 More Specifics   34 Total Advertisements   CMCS, US
    24.104.75.0/24                24.104.0.0/17
    50.172.163.0/24               50.128.0.0/9
    50.200.67.0/24                50.128.0.0/9
    50.201.112.0/24               50.128.0.0/9
    50.201.142.0/24               50.128.0.0/9
    50.202.119.0/24               50.128.0.0/9
    50.203.75.0/24                50.128.0.0/9
    50.205.109.0/24               50.128.0.0/9
    50.216.38.0/24                50.128.0.0/9
    50.217.18.0/24                50.128.0.0/9
    50.217.175.0/24               50.128.0.0/9
    50.220.66.0/24                50.128.0.0/9
    50.220.146.0/23               50.128.0.0/9
    50.223.168.0/24               50.128.0.0/9
    50.224.223.0/24               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
    50.230.22.0/24                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
    50.239.205.0/24               50.128.0.0/9
    100.43.0.0/23                 100.43.0.0/19
    107.1.148.0/24                107.0.0.0/14
    108.175.16.0/24               108.175.16.0/20
    108.175.21.0/24               108.175.16.0/20
    142.54.208.0/21               142.54.208.0/20
    142.54.216.0/24               142.54.208.0/20
    198.46.65.0/24                198.46.64.0/20
    208.110.207.0/24              208.110.192.0/19
    50.172.175.0/24               50.128.0.0/9
    50.172.191.0/24               50.128.0.0/9
    50.220.144.0/23               50.128.0.0/9

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

    + 50.223.168.0/24             Announced
    + 108.175.16.0/24             Announced
    + 108.175.21.0/24             Announced
    + 142.54.208.0/21             Announced
    + 142.54.216.0/24             Announced
    - 50.172.175.0/24             Withdrawn
    - 50.172.191.0/24             Withdrawn
    - 50.220.144.0/23             Withdrawn

Whois Entry

whois: 402549

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.
             #