Report for 16748

Name

COMCAST-TELECOMM-4 - 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 AS4637) 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.

16748 COMCAST-TELECOMM-4 - Comcast Telecommunications, Inc.

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7853    COMCAST-TELECOMM-2 - Comcast Telecommunications, Inc.
    AS32327   PPLT - PPL Telcom, LLC

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
3357  AS16748  ORIGIN  Originate:      46080 /16.51  Transit:          0 /0.00  COMCAST-TELECOMM-4 - Comcast Telecommunications, Inc.

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       %
 5151 AS16748 COMCAST-TELECOMM-4 - Comcast Telecommuni     15      1      0     14      1   6.67%


  Prefix               AS Path                              Aggregation Suggestion
  64.78.80.0/20        4637 3356 7911 32327 16748   
  68.63.96.0/19        4637 3356 7911 32327 16748   
  69.136.208.0/20      4637 3356 7911 32327 16748   
  72.55.32.0/21        4637 3356 6395 7853 16748   
  73.116.112.0/20      4637 3356 7911 32327 16748   
  73.126.192.0/19      4637 3356 7911 32327 16748   
  74.92.240.0/22       4637 3356 7911 32327 16748   
  209.23.192.0/20      4637 3356 7911 32327 16748   
  209.23.192.0/21      4637 3356 7911 32327 16748 - Withdrawn - matching aggregate 209.23.192.0/20 4637 3356 7911 32327 16748
  209.23.200.0/21      4637 3356 6395 7853 16748   
  209.23.212.0/22      4637 3356 7911 32327 16748   
  209.23.224.0/22      4637 3356 7911 32327 16748   
  209.23.244.0/22      4637 3356 7911 32327 16748   
  209.23.252.0/22      4637 3356 7911 32327 16748   
  216.45.184.0/21      4637 3356 7911 32327 16748   

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

AS16748   14 More Specifics   14 Total Advertisements   COMCAST-TELECOMM-4 - Comcast Telecommunications, Inc.
    64.78.80.0/20                 64.78.64.0/18
    68.63.96.0/19                 68.32.0.0/11
    69.136.208.0/20               69.136.0.0/13
    73.116.112.0/20               73.0.0.0/8
    73.126.192.0/19               73.0.0.0/8
    74.92.240.0/22                74.92.0.0/14
    209.23.192.0/20               209.23.192.0/18
    209.23.192.0/21               209.23.192.0/18
    209.23.200.0/21               209.23.192.0/18
    209.23.212.0/22               209.23.192.0/18
    209.23.224.0/22               209.23.192.0/18
    209.23.244.0/22               209.23.192.0/18
    209.23.252.0/22               209.23.192.0/18
    216.45.184.0/21               216.45.128.0/17

Whois Entry

whois: 402603

IANA has recorded AS16748 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS16748\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:       16748
             ASName:         COMCAST-TELECOMM-4
             ASHandle:       AS16748
             RegDate:        2005-07-12
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/16748
             
             
             
             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.
             #