Report for 33659

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.

33659 CMCS, US

  Adjacency:    72  Upstream:     2  Downstream:    70
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS7922          COMCAST-7922, US
  Downstream Adjacent AS list
    AS17035         NBCUNI-17035, US
    AS394110        BNFP, US
    AS13839         P1P3R, US
    AS15185         HIBBERT-EAST, US
    AS19216         REVLON-AS, US
    AS26142         MANNINGTON-SALEM, US
    AS32460         COPS-MONITORING, US
    AS54291         SJH-ASN01, US
    AS54986         FLOWERS, US
    AS21672         CES-HQPA-01, US
    AS13785         SMH, US
    AS11396         TWC-ASN, US
    AS14539         VLABS, US
    AS14531         LM-ATL, US
    AS16758         RICOH USA, US
    AS16958         BCIU-22, US
    AS17003         ZOETIS-INC, US
    AS15243         WIDENER, US
    AS14529         SJU-5600, US
    AS19576         EASTERN-AS-01, US
    AS20390         FSS, US
    AS22641         NNPI, US
    AS21897         VIRTUA-HEALTH, US
    AS23062         JWPEPPER, US
    AS26881         IPR-INTERNATIONAL-LLC, US
    AS26764         RWJF-AS, US
    AS33575         TFINET-PUBLIC, US
    AS36350         AS-DEVEREUX, US
    AS393228        VINELAND, US
    AS393516        EDMAMERICASASN, US
    AS36412         DREXEL-ASN2, US
    AS34            UDELNET, US
    AS33615         EVHC, US
    AS33261         PHRG, US
    AS397380        TEMPLE-HEALTH, US
    AS397401        WILLIAM-HILL-01, US
    AS395503        COMTEC-ASN, US
    AS401071        SEA-BOX, US
    AS399885        EVANS-SUTHERLAND-ASN, US
    AS53419         -Reserved AS-, ZZ
    AS54485         PCOM-EDU, US
    AS53434         SRI-INTERNATIONAL-PRINCETON, US
    AS53373         MATH-INC, US
    AS62541         VSH-ASN, US
    AS54682         CFCU01, US
    AS40471         INCYTECORP, US
    AS40177         THE-INSTITUTES, US
    AS10794         BANKAMERICA, US
    AS33523         ROWANUNIVERSITY, US
    AS40159         PRINCETON-REGIONAL-SCHOOLS, US
    AS54268         CAPITALHEALTH, US
    AS11205         CITY-OF-PHILADELPHIA, US
    AS18583         HATTERASCPC, US
    AS21669         NJ-STATEWIDE-LIBRARY-NETWORK, US
    AS19677         NJTRANSIT, US
    AS22774         -Reserved AS-, ZZ
    AS30597         AMBEST-ASN, US
    AS30302         ASPEN-DENTAL-INC, US
    AS29891         NCCWO-ASN1-VZBLVL3CMCST, US
    AS17317         THING5-NA, US
    AS394206        DHLC-AS, US
    AS394096        CAPEREGIONALHEALTHSYSTEM, US
    AS40886         PRAC, US
    AS53291         WSFS-ASN, US
    AS54282         JJINTEROP, US
    AS46424         NJTA, US
    AS63193         AHS, US
    AS397589        AMERICAN-DREAM-NJ, US
    AS36040         YOUTUBE, US
    AS33141         NOCSERVICES, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4160  AS33659        ORG+TRN Originate:      56064 /16.23  Transit:      73472 /15.84 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       %
 4390 AS33659       CMCS, US                                          76     18      6     64     12  15.79%


  Prefix               AS Path                              Aggregation Suggestion
  9.142.0.0/19         2152 7922 33659        
  23.227.64.0/22       7018 7922 33659        
  23.227.92.0/22       7018 7922 33659        
  23.234.144.0/22      7018 7922 33659        
  23.234.152.0/22      7018 7922 33659        
  31.132.54.0/23       2152 7922 33659        
  45.58.208.0/24       2152 7922 33659        
  45.58.210.0/23       2152 7922 33659        
  45.150.168.0/22      7018 7922 33659        
  45.151.196.0/22      7018 7922 33659        
  45.248.54.0/24       2152 7922 33659        
  50.207.78.0/24       3257 7922 33659        
  50.218.16.0/24       3257 7922 33659        
  50.223.132.0/24      3257 7922 33659        
  50.226.61.0/24       3257 7922 33659        
  50.228.255.0/24      3257 7922 33659        
  50.229.146.0/24      3257 7922 33659        
  50.231.89.0/24       3257 7922 33659        
  50.231.144.0/24      3257 7922 33659        
  50.231.154.0/24      3257 7922 33659        
  50.231.216.0/24      3257 7922 33659        
  50.235.249.0/24      3257 7922 33659        
  50.238.108.0/23      3257 7922 33659      + Announce - aggregate of 50.238.108.0/24 (3257 7922 33659) and 50.238.109.0/24 (3257 7922 33659)
  50.238.108.0/24      3257 7922 33659      - Withdrawn - aggregated with 50.238.109.0/24 (3257 7922 33659)
  50.238.109.0/24      3257 7922 33659      - Withdrawn - aggregated with 50.238.108.0/24 (3257 7922 33659)
  52.128.192.0/22      7018 7922 33659        
  52.128.204.0/22      7018 7922 33659        
  52.128.220.0/22      7018 7922 33659        
  63.246.150.0/24      2152 7922 33659        
  64.52.28.0/22        2152 7922 33659        
  64.93.84.0/22        7018 7922 33659        
  64.112.8.0/22        7018 7922 33659        
  64.253.90.0/24       7018 7922 33659        
  68.234.42.0/24       2152 7922 33659        
  69.30.72.0/22        2152 7922 33659      + Announce - aggregate of 69.30.72.0/23 (2152 7922 33659) and 69.30.74.0/23 (2152 7922 33659)
  69.30.72.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.73.0/24 (2152 7922 33659)
  69.30.73.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.72.0/24 (2152 7922 33659)
  69.30.74.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.75.0/24 (2152 7922 33659)
  69.30.75.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.74.0/24 (2152 7922 33659)
  69.30.76.0/23        2152 7922 33659      + Announce - aggregate of 69.30.76.0/24 (2152 7922 33659) and 69.30.77.0/24 (2152 7922 33659)
  69.30.76.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.77.0/24 (2152 7922 33659)
  69.30.77.0/24        2152 7922 33659      - Withdrawn - aggregated with 69.30.76.0/24 (2152 7922 33659)
  69.91.139.0/24       2152 7922 33659        
  69.91.147.0/24       2152 7922 33659        
  78.31.205.0/24       2152 7922 33659        
  95.164.224.0/22      7018 7922 33659        
  107.0.169.0/24       6939 7922 33659        
  107.166.16.0/20      7018 7922 33659      + Announce - aggregate of 107.166.16.0/21 (7018 7922 33659) and 107.166.24.0/21 (7018 7922 33659)
  107.166.16.0/22      7018 7922 33659      - Withdrawn - aggregated with 107.166.20.0/22 (7018 7922 33659)
  107.166.20.0/22      7018 7922 33659      - Withdrawn - aggregated with 107.166.16.0/22 (7018 7922 33659)
  107.166.24.0/22      7018 7922 33659      - Withdrawn - aggregated with 107.166.28.0/22 (7018 7922 33659)
  107.166.28.0/22      7018 7922 33659      - Withdrawn - aggregated with 107.166.24.0/22 (7018 7922 33659)
  107.166.96.0/20      7018 7922 33659      + Announce - aggregate of 107.166.96.0/21 (7018 7922 33659) and 107.166.104.0/21 (7018 7922 33659)
  107.166.96.0/22      7018 7922 33659      - Withdrawn - aggregated with 107.166.100.0/22 (7018 7922 33659)
  107.166.100.0/22     7018 7922 33659      - Withdrawn - aggregated with 107.166.96.0/22 (7018 7922 33659)
  107.166.104.0/22     7018 7922 33659      - Withdrawn - aggregated with 107.166.108.0/22 (7018 7922 33659)
  107.166.108.0/22     7018 7922 33659      - Withdrawn - aggregated with 107.166.104.0/22 (7018 7922 33659)
  138.226.0.0/20       2152 7922 33659        
  138.226.88.0/21      2152 7922 33659        
  158.62.212.0/24      7018 7922 33659        
  158.62.214.0/23      7018 7922 33659      + Announce - aggregate of 158.62.214.0/24 (7018 7922 33659) and 158.62.215.0/24 (7018 7922 33659)
  158.62.214.0/24      7018 7922 33659      - Withdrawn - aggregated with 158.62.215.0/24 (7018 7922 33659)
  158.62.215.0/24      7018 7922 33659      - Withdrawn - aggregated with 158.62.214.0/24 (7018 7922 33659)
  167.254.205.0/24     2152 7922 33659        
  170.62.252.0/24      7018 7922 33659        
  170.62.255.0/24      7018 7922 33659        
  170.100.128.0/22     2152 7922 33659        
  170.100.192.0/21     2152 7922 33659        
  170.100.200.0/22     2152 7922 33659        
  185.188.192.0/22     7018 7922 33659        
  185.205.204.0/24     2152 7922 33659        
  192.64.165.0/24      7018 7922 33659        
  192.133.105.0/24     7018 7922 33659        
  192.135.0.0/24       7018 7922 33659        
  193.31.104.0/22      7018 7922 33659        
  195.138.109.0/24     7018 7922 33659        
  195.138.110.0/24     7018 7922 33659        
  195.138.113.0/24     7018 7922 33659        
  195.138.115.0/24     7018 7922 33659        
  195.138.124.0/22     7018 7922 33659        
  195.211.116.0/22     7018 7922 33659        
  198.145.225.0/24     2152 7922 33659        

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

AS33659   30 More Specifics   33 Total Advertisements   CMCS, US
    50.174.21.0/24                50.128.0.0/9
    50.174.29.0/24                50.128.0.0/9
    50.174.30.0/24                50.128.0.0/9
    50.174.31.0/24                50.128.0.0/9
    50.174.32.0/24                50.128.0.0/9
    50.207.138.0/24               50.128.0.0/9
    50.218.16.0/24                50.128.0.0/9
    50.223.132.0/24               50.128.0.0/9
    50.226.61.0/24                50.128.0.0/9
    50.228.255.0/24               50.128.0.0/9
    50.229.146.0/24               50.128.0.0/9
    50.231.88.0/24                50.128.0.0/9
    50.231.89.0/24                50.128.0.0/9
    50.231.144.0/24               50.128.0.0/9
    50.231.154.0/24               50.128.0.0/9
    50.231.216.0/24               50.128.0.0/9
    50.232.31.0/24                50.128.0.0/9
    50.232.59.0/24                50.128.0.0/9
    50.235.249.0/24               50.128.0.0/9
    50.238.108.0/24               50.128.0.0/9
    50.238.109.0/24               50.128.0.0/9
    64.56.33.0/24                 64.56.32.0/19
    68.234.42.0/24                68.234.40.0/21
    107.0.169.0/24                107.0.0.0/14
    158.62.212.0/24               158.62.208.0/20
    158.62.214.0/24               158.62.208.0/20
    158.62.215.0/24               158.62.208.0/20
    209.23.217.0/24               209.23.192.0/18
    216.45.128.0/22               216.45.128.0/17
    216.45.132.0/23               216.45.128.0/17

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

    + 50.207.138.0/24             Announced
    + 50.231.88.0/24              Announced
    + 50.232.31.0/24              Announced
    + 50.232.59.0/24              Announced
    + 64.56.33.0/24               Announced
    + 68.234.42.0/24              Announced
    + 158.62.212.0/24             Announced
    + 158.62.214.0/24             Announced
    + 158.62.215.0/24             Announced
    + 192.64.165.0/24             Announced
    + 192.133.105.0/24            Announced
    + 192.135.0.0/24              Announced
    + 216.45.128.0/22             Announced
    + 216.45.132.0/23             Announced

Bogus ASes Announced by this AS

Bogus AS		Announcing-AS
AS22774	Announced by	AS33659	CMCS - Comcast Cable Communications, LLC, US

Whois Entry

whois: 402551

IANA has recorded AS33659 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33659\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:       33659
             ASName:         CMCS
             ASHandle:       AS33659
             RegDate:        2005-02-16
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/33659
             
             
             
             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.
             #