Report for 20214

Name

COMCAST-20214 - 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.

20214 COMCAST-20214, US

  Adjacency:    22  Upstream:     2  Downstream:    20
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS7922          COMCAST-7922, US
  Downstream Adjacent AS list
    AS19899         MDC-EDU, US
    AS31812         PBSO-INTERNET, US
    AS12013         FAUNET, US
    AS395619        THE-COLLEGE-OF-THE-FLORIDA-KEYS, US
    AS33580         VENTURETECHSOL, US
    AS401195        --No Registry Entry--
    AS401691        --No Registry Entry--
    AS393843        WPLG-TV, US
    AS14310         SNB-ASN, US
    AS62958         ADT-LLC, US
    AS4890          ASN-RICHLINE-FL, US
    AS16423         NETTOGO-BLK, US
    AS22032         ORC-KEYLARGO, US
    AS17035         NBCUNI-17035, US
    AS396235        TODFL, US
    AS398044        FIBERFED, US
    AS399241        OCEAN-BANK, US
    AS36040         YOUTUBE, US
    AS63415         GREAT-HEALTHWORKS-4150-BUILDING, US
    AS402211        --No Registry Entry--

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1702  AS20214        ORG+TRN Originate:     140544 /14.90  Transit:      11520 /18.51 COMCAST-20214, 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       %
16106 AS20214       COMCAST-20214, US                                 22      2      0     20      2   9.09%


  Prefix               AS Path                              Aggregation Suggestion
  50.150.146.0/24      2914 7922 20214        
  50.200.25.0/24       3257 7922 20214        
  50.200.159.0/24      6939 7922 20214        
  50.202.4.0/24        3257 7922 20214        
  50.202.167.0/24      6939 7922 20214        
  50.202.227.0/24      6939 7922 20214        
  50.205.246.0/23      3257 7922 20214        
  50.216.237.0/24      6939 7922 20214        
  50.222.172.0/24      6939 7922 20214        
  50.224.11.0/24       3257 7922 20214        
  50.224.22.0/24       6939 7922 20214        
  50.224.86.0/24       3257 7922 20214        
  50.224.249.0/24      3257 7922 20214        
  50.229.72.0/24       6939 7922 20214        
  50.233.138.0/23      3257 7922 20214        
  50.237.82.0/24       3257 7922 20214        
  50.237.224.0/24      6939 7922 20214        
  141.193.53.0/24      57866 3356 20214       
  147.137.0.0/16       57866 3356 20214       
  168.221.0.0/16       57866 3356 20214       
  168.221.171.0/24     57866 3356 20214     - Withdrawn - matching aggregate 168.221.0.0/16 57866 3356 20214
  168.221.176.0/20     57866 3356 20214     - Withdrawn - matching aggregate 168.221.0.0/16 57866 3356 20214

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

AS20214   31 More Specifics   33 Total Advertisements   COMCAST-20214, US
    50.172.9.0/24                 50.128.0.0/9
    50.172.41.0/24                50.128.0.0/9
    50.200.25.0/24                50.128.0.0/9
    50.200.159.0/24               50.128.0.0/9
    50.201.231.0/24               50.128.0.0/9
    50.202.4.0/24                 50.128.0.0/9
    50.202.167.0/24               50.128.0.0/9
    50.202.227.0/24               50.128.0.0/9
    50.205.246.0/23               50.128.0.0/9
    50.216.237.0/24               50.128.0.0/9
    50.217.107.0/24               50.128.0.0/9
    50.219.22.0/24                50.128.0.0/9
    50.222.172.0/24               50.128.0.0/9
    50.223.45.0/24                50.128.0.0/9
    50.224.11.0/24                50.128.0.0/9
    50.224.22.0/24                50.128.0.0/9
    50.224.86.0/24                50.128.0.0/9
    50.224.249.0/24               50.128.0.0/9
    50.225.30.0/24                50.128.0.0/9
    50.226.120.0/23               50.128.0.0/9
    50.226.122.0/23               50.128.0.0/9
    50.229.72.0/24                50.128.0.0/9
    50.229.91.0/24                50.128.0.0/9
    50.233.138.0/23               50.128.0.0/9
    50.237.82.0/24                50.128.0.0/9
    50.237.224.0/24               50.128.0.0/9
    50.239.127.0/24               50.128.0.0/9
    141.193.53.0/24               141.193.48.0/21
    168.221.171.0/24              168.221.0.0/16
    216.172.87.0/24               216.172.80.0/20
    216.172.91.0/24               216.172.80.0/20
    50.172.7.0/24                 50.128.0.0/9

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

    + 50.201.231.0/24             Announced
    + 50.217.107.0/24             Announced
    + 50.229.91.0/24              Announced
    + 216.172.87.0/24             Announced
    + 216.172.91.0/24             Announced
    - 50.172.7.0/24               Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS20214 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS20214\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:       20214
             ASName:         COMCAST-20214
             ASHandle:       AS20214
             RegDate:        2001-04-06
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/20214
             
             
             
             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.
             #