Report for 33287

Name

COMCAST-33287 - 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.

33287 COMCAST-33287, US

  Adjacency:   127  Upstream:     2  Downstream:   125
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS7922          COMCAST-7922, US
  Downstream Adjacent AS list
    AS19691         888-, US
    AS11911         THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS11911, US
    AS14290         ASD-ANSWERING-SERVICE-FOR-DIRECTORS, US
    AS18842         VERTICAL-SCR, US
    AS21504         BESSEMER-GROUP-INCORPORATED, US
    AS19851         DOYLESTOWN-HOSPITAL, US
    AS22755         DAVISVISION-ASN, US
    AS25801         AUTOMATED-FINANCIAL, US
    AS25843         EVOLVEIP, US
    AS26917         COVENTRY-ASN, US
    AS2928          COAT, US
    AS30293         SOUTH-AS30293, US
    AS32377         SCM-LP-1, US
    AS32342         GENEXSERVICES, US
    AS26647         MSS1, US
    AS33607         WSC-PHILADELPHIA-PA, US
    AS33430         VTSILAS, US
    AS398743        NEMOURS, US
    AS400088        WAWA-PUBLIC-BLOCK, US
    AS401733        --No Registry Entry--
    AS46139         METASOURCE, US
    AS393687        DELAWARE-RIVER-AND-BAY-AUTHORITY, US
    AS54291         SJH-ASN01, US
    AS46909         PHILADELPHIAFCU, US
    AS46213         LS-POWER-ASN-02, US
    AS13785         SMH, US
    AS21672         CES-HQPA-01, US
    AS36412         DREXEL-ASN2, US
    AS18583         HATTERASCPC, US
    AS19677         NJTRANSIT, US
    AS21669         NJ-STATEWIDE-LIBRARY-NETWORK, US
    AS30597         AMBEST-ASN, US
    AS30302         ASPEN-DENTAL-INC, US
    AS33141         NOCSERVICES, US
    AS33523         ROWANUNIVERSITY, US
    AS394206        DHLC-AS, US
    AS394096        CAPEREGIONALHEALTHSYSTEM, US
    AS22774         -Reserved AS-, ZZ
    AS397589        AMERICAN-DREAM-NJ, US
    AS40886         PRAC, US
    AS46424         NJTA, US
    AS54282         JJINTEROP, US
    AS17317         THING5-NA, US
    AS19826         UHS-088, US
    AS401712        --No Registry Entry--
    AS3778          TEMPLE, US
    AS11267         PEIRCE-PHELPS, US
    AS11205         CITY-OF-PHILADELPHIA, US
    AS11731         AS11731, US
    AS1620          AS-DOELEGAL, US
    AS13550         ROTHMAN-01, US
    AS22638         PHILORCH-ASN, US
    AS22444         USCOLD, US
    AS30183         HRCAC-1, US
    AS36533         698ALEX, US
    AS393307        CHSNJ-ASN1, US
    AS394110        BNFP, US
    AS397986        PA-CONVENTION-CENTER, US
    AS401539        --No Registry Entry--
    AS46363         HOLYFAMILY, US
    AS54544         WM-549-01, US
    AS54481         CHESCO204108252, US
    AS62598         REI-TEL, US
    AS62644         NBCSN-DMZ, US
    AS7328          CHOP, US
    AS393500        GERMANTOWNFRIENDSSCHOOL, 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
    AS15038         CAMBINC-1, US
    AS14529         SJU-5600, US
    AS19576         EASTERN-AS-01, US
    AS20390         FSS, US
    AS22641         NNPI, US
    AS21897         VIRTUA-HEALTH, US
    AS17035         NBCUNI-17035, US
    AS13339         -Reserved AS-, ZZ
    AS23062         JWPEPPER, US
    AS26881         IPR-INTERNATIONAL-LLC, US
    AS26764         RWJF-AS, US
    AS32691         CSC, US
    AS31836         USLI, US
    AS30330         ARI-9000, US
    AS26998         NFII-ASN, US
    AS22928         CMR1385, US
    AS33014         MARLINLEASING, US
    AS33575         TFINET-PUBLIC, US
    AS34            UDELNET, US
    AS33615         EVHC, US
    AS36350         AS-DEVEREUX, US
    AS36253         DCIUNET, US
    AS36040         YOUTUBE, US
    AS33261         PHRG, US
    AS32949         UNITED-REFRIGERATION, US
    AS393228        VINELAND, US
    AS393516        EDMAMERICASASN, US
    AS36679         -Reserved AS-, ZZ
    AS399885        EVANS-SUTHERLAND-ASN, US
    AS397401        WILLIAM-HILL-01, US
    AS395503        COMTEC-ASN, US
    AS394916        PHLAIRPORT, US
    AS401071        SEA-BOX, US
    AS400843        AUDACY, US
    AS46274         UPHS, US
    AS40471         INCYTECORP, US
    AS53419         -Reserved AS-, ZZ
    AS54485         PCOM-EDU, US
    AS53750         NEUMANN-UNIVERSITY, US
    AS53434         SRI-INTERNATIONAL-PRINCETON, US
    AS53373         MATH-INC, US
    AS53291         WSFS-ASN, US
    AS62541         VSH-ASN, US
    AS54682         CFCU01, US
    AS54568         BGIM-ASN-2, US
    AS46807         GLOUC-NJ, US
    AS62958         ADT-LLC, US
    AS64287         IPS, US
    AS62870         PMG, US
    AS40177         THE-INSTITUTES, US
    AS32752         YCST-AS, US
    AS397380        TEMPLE-HEALTH, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
11060 AS33287        ORG+TRN Originate:       8960 /18.87  Transit:     157696 /14.73 COMCAST-33287, 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       %
40130 AS33287       COMCAST-33287, US                                 32      0      0     32      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  24.75.216.0/22       7018 7922 33287        
  24.104.156.0/24      3257 7922 33287        
  50.148.139.0/24      3257 7922 33287        
  50.148.165.0/24      3257 7922 33287        
  50.200.97.0/24       3257 7922 33287        
  50.201.99.0/24       3257 7922 33287        
  50.202.31.0/24       3257 7922 33287        
  50.202.142.0/24      3257 7922 33287        
  50.202.176.0/24      3257 7922 33287        
  50.203.190.0/24      3257 7922 33287        
  50.206.77.0/24       3257 7922 33287        
  50.206.85.0/24       3257 7922 33287        
  50.206.163.0/24      3257 7922 33287        
  50.207.65.0/24       3257 7922 33287        
  50.216.135.0/24      3257 7922 33287        
  50.216.138.0/24      3257 7922 33287        
  50.218.90.0/24       3257 7922 33287        
  50.222.119.0/24      3257 7922 33287        
  50.225.8.0/24        3257 7922 33287        
  50.225.65.0/24       6939 7922 33287        
  50.225.139.0/24      3257 7922 33287        
  50.227.176.0/24      3257 7922 33287        
  50.229.207.0/24      3257 7922 33287        
  50.232.31.0/24       3257 7922 33287        
  50.232.103.0/24      3257 7922 33287        
  107.0.50.0/24        3257 7922 33287        
  107.1.33.0/24        3257 7922 33287        
  107.1.53.0/24        3257 7922 33287        
  107.1.86.0/24        3257 7922 33287        
  107.1.136.0/24       3257 7922 33287        
  198.184.150.0/24     7018 7922 33287        
  209.23.225.0/24      3257 7922 33287        

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

AS33287   46 More Specifics   47 Total Advertisements   COMCAST-33287, US
    24.75.216.0/22                24.75.208.0/20
    24.104.156.0/24               24.104.128.0/19
    50.174.131.0/24               50.128.0.0/9
    50.200.97.0/24                50.128.0.0/9
    50.201.27.0/24                50.128.0.0/9
    50.201.99.0/24                50.128.0.0/9
    50.202.31.0/24                50.128.0.0/9
    50.202.142.0/24               50.128.0.0/9
    50.202.176.0/24               50.128.0.0/9
    50.203.190.0/24               50.128.0.0/9
    50.206.77.0/24                50.128.0.0/9
    50.206.85.0/24                50.128.0.0/9
    50.206.163.0/24               50.128.0.0/9
    50.207.65.0/24                50.128.0.0/9
    50.207.78.0/24                50.128.0.0/9
    50.207.159.0/24               50.128.0.0/9
    50.216.135.0/24               50.128.0.0/9
    50.216.138.0/24               50.128.0.0/9
    50.218.90.0/24                50.128.0.0/9
    50.222.108.0/24               50.128.0.0/9
    50.222.119.0/24               50.128.0.0/9
    50.224.198.0/24               50.128.0.0/9
    50.225.8.0/24                 50.128.0.0/9
    50.225.65.0/24                50.128.0.0/9
    50.225.139.0/24               50.128.0.0/9
    50.227.176.0/24               50.128.0.0/9
    50.228.100.0/24               50.128.0.0/9
    50.228.104.0/24               50.128.0.0/9
    50.228.121.0/24               50.128.0.0/9
    50.229.207.0/24               50.128.0.0/9
    50.232.103.0/24               50.128.0.0/9
    66.240.30.0/24                66.240.0.0/18
    104.167.134.0/24              104.167.128.0/18
    107.0.50.0/24                 107.0.0.0/14
    107.0.174.0/24                107.0.0.0/14
    107.1.33.0/24                 107.0.0.0/14
    107.1.53.0/24                 107.0.0.0/14
    107.1.86.0/24                 107.0.0.0/14
    107.1.136.0/24                107.0.0.0/14
    208.39.136.0/22               208.39.128.0/18
    208.39.144.0/24               208.39.128.0/18
    208.39.157.0/24               208.39.128.0/18
    208.39.158.0/24               208.39.128.0/18
    208.39.159.0/24               208.39.128.0/18
    208.39.161.0/24               208.39.128.0/18
    209.23.225.0/24               209.23.192.0/18
    50.174.183.0/24               50.128.0.0/9
    50.174.192.0/24               50.128.0.0/9
    50.174.211.0/24               50.128.0.0/9
    50.207.138.0/24               50.128.0.0/9
    50.232.31.0/24                50.128.0.0/9
    68.234.42.0/24                68.234.40.0/21
    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

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

    + 50.201.27.0/24              Announced
    + 50.222.108.0/24             Announced
    - 50.174.183.0/24             Withdrawn
    - 50.174.192.0/24             Withdrawn
    - 50.174.211.0/24             Withdrawn
    - 50.207.138.0/24             Withdrawn
    - 50.232.31.0/24              Withdrawn
    - 68.234.42.0/24              Withdrawn
    - 158.62.212.0/24             Withdrawn
    - 158.62.214.0/24             Withdrawn
    - 158.62.215.0/24             Withdrawn
    - 192.64.165.0/24             Withdrawn
    - 192.133.105.0/24            Withdrawn
    - 192.135.0.0/24              Withdrawn

Bogus ASes Announced by this AS

Bogus AS		Announcing-AS
AS13339	Announced by	AS33287	COMCAST-33287 - Comcast Cable Communications, LLC, US
AS36679	Announced by	AS33287	COMCAST-33287 - Comcast Cable Communications, LLC, US
AS53419	Announced by	AS33287	COMCAST-33287 - Comcast Cable Communications, LLC, US

Whois Entry

whois: 402551

IANA has recorded AS33287 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33287\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:       33287
             ASName:         COMCAST-33287
             ASHandle:       AS33287
             RegDate:        2004-11-16
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/33287
             
             
             
             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.
             #