Report for 13385

Name

COMCAST-TELECOMM - 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.

13385 COMCAST-TELECOMM - Comcast Telecommunications, Inc.

  Adjacency:    22  Upstream:     3  Downstream:    19
  Upstream Adjacent AS list
    AS3356    LEVEL3 Level 3 Communications
    AS7911    LVLT-7911 - Level 3 Communications, Inc.
    AS7922    DNEO-OSP3 - Comcast Cable Communications, Inc.
  Downstream Adjacent AS list
    AS11023   SYSSRC - System Source
    AS14531   LM-ATL - Lockheed Martin Corporation
    AS29964   MCCORMICK-AND-COMPANY - McCormick & Company Inc.
    AS23116   MPA-ASN1 - Marvin & Palmer Associates, Inc.
    AS2031    COWACONET - St. Louis County Water Company
    AS30070   HERSHEYFOODS1 - Hershey Chocolate U.S.A.
    AS14831   ANSRTHINK - Answerthink
    AS33267   BALLY-TOTAL-FITNESS - Bally Total Fitness
    AS36861   SBHCS-NET - Saint Barnabas Health Care System
    AS39945   NUSPIRE - Nuspire Communications
    AS32648   MNAT - Morris, Nichols, Arsht and Tunnel
    AS40102   MONTGOMERY-COLLEGE-AS1 - Montgomery College.
    AS32291   ANNEARUNDELMEDICALCENTER - ANNE ARUNDEL MEDICAL CENTER
    AS6189    EPFL-AS - Enoch-Pratt Free Library
    AS32240   ROUTERDOG - Proportal LLC
    AS10564   TCSI - TCSI Corporation
    AS33022   WELLESLEY-COLLEGE - Wellesley College
    AS27291   FRYS-ELECT - Fry's Electronics Inc.
    AS16481   BABSON-GNET - Babson College

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1764  AS13385  ORG+TRN Originate:      84736 /15.63  Transit:     214272 /14.29 COMCAST-TELECOMM - 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       %
  343 AS13385 COMCAST-TELECOMM - Comcast Telecommunica     62     40      1     23     39  62.90%


  Prefix               AS Path                              Aggregation Suggestion
  64.56.32.0/19        4637 3356 13385        
  64.56.32.0/21        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.41.0/24        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.42.0/23        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.44.0/23        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.46.0/24        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.47.0/24        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.49.0/24        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.50.0/23        4637 3356 13385      - Withdrawn - matching aggregate 64.56.32.0/19 4637 3356 13385
  64.56.56.0/21        4637 3356 7911 13385   
  66.240.0.0/18        4637 3356 13385        
  66.240.0.0/20        4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.16.0/22       4637 3356 7911 13385   
  66.240.20.0/22       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.24.0/22       4637 3356 7911 13385   
  66.240.28.0/22       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.32.0/23       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.34.0/23       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.36.0/22       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.40.0/21       4637 3356 13385      - Withdrawn - matching aggregate 66.240.0.0/18 4637 3356 13385
  66.240.48.0/20       4637 3356 7911 13385 + Announce - aggregate of 66.240.48.0/21 (4637 3356 7911 13385) and 66.240.56.0/21 (4637 3356 7911 13385)
  66.240.48.0/21       4637 3356 7911 13385 - Withdrawn - aggregated with 66.240.56.0/21 (4637 3356 7911 13385)
  66.240.56.0/21       4637 3356 7911 13385 - Withdrawn - aggregated with 66.240.48.0/21 (4637 3356 7911 13385)
  167.86.1.0/24        4637 3356 7911 13385   
  192.111.36.0/24      4637 3356 7911 13385   
  192.203.187.0/24     4637 3356 13385        
  198.51.197.0/24      4637 3356 13385        
  198.137.252.0/24     4637 3356 13385        
  198.200.181.0/24     4637 3356 13385        
  198.232.248.0/24     4637 3356 13385        
  199.253.176.0/22     4637 3356 13385        
  199.253.180.0/24     4637 3356 13385        
  204.126.132.0/23     4637 3356 13385        
  204.153.76.0/22      4637 3356 13385        
  204.238.198.0/24     4637 3356 13385        
  205.166.64.0/24      4637 3356 13385        
  206.82.16.0/21       4637 3356 13385        
  206.220.32.0/22      4637 3356 13385        
  208.39.128.0/18      4637 3356 13385        
  208.39.128.0/22      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.134.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.138.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.140.0/22      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.144.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.151.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.152.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.153.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.156.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.157.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.158.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.159.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.160.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.161.0/24      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.162.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.164.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.166.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.168.0/22      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.172.0/22      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.176.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.178.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.180.0/22      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  208.39.190.0/23      4637 3356 13385      - Withdrawn - matching aggregate 208.39.128.0/18 4637 3356 13385
  216.45.240.0/22      4637 3356 13385        

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

AS13385   50 More Specifics   66 Total Advertisements   COMCAST-TELECOMM - Comcast Telecommunications, Inc.
    64.56.32.0/21                 64.56.32.0/19
    64.56.41.0/24                 64.56.32.0/19
    64.56.42.0/23                 64.56.32.0/19
    64.56.44.0/23                 64.56.32.0/19
    64.56.46.0/24                 64.56.32.0/19
    64.56.47.0/24                 64.56.32.0/19
    64.56.49.0/24                 64.56.32.0/19
    64.56.50.0/23                 64.56.32.0/19
    64.56.56.0/21                 64.56.32.0/19
    66.240.0.0/20                 66.240.0.0/18
    66.240.16.0/22                66.240.0.0/18
    66.240.20.0/22                66.240.0.0/18
    66.240.24.0/22                66.240.0.0/18
    66.240.28.0/22                66.240.0.0/18
    66.240.32.0/23                66.240.0.0/18
    66.240.34.0/23                66.240.0.0/18
    66.240.36.0/22                66.240.0.0/18
    66.240.40.0/21                66.240.0.0/18
    66.240.48.0/21                66.240.0.0/18
    66.240.56.0/21                66.240.0.0/18
    72.55.0.0/21                  72.55.0.0/17
    72.55.8.0/21                  72.55.0.0/17
    72.55.32.0/19                 72.55.0.0/17
    167.86.1.0/24                 167.86.0.0/16
    198.137.252.0/24              198.137.252.0/23
    208.39.128.0/22               208.39.128.0/18
    208.39.134.0/24               208.39.128.0/18
    208.39.138.0/24               208.39.128.0/18
    208.39.140.0/22               208.39.128.0/18
    208.39.144.0/23               208.39.128.0/18
    208.39.151.0/24               208.39.128.0/18
    208.39.152.0/24               208.39.128.0/18
    208.39.153.0/24               208.39.128.0/18
    208.39.156.0/24               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
    208.39.160.0/24               208.39.128.0/18
    208.39.161.0/24               208.39.128.0/18
    208.39.162.0/23               208.39.128.0/18
    208.39.164.0/23               208.39.128.0/18
    208.39.166.0/23               208.39.128.0/18
    208.39.168.0/22               208.39.128.0/18
    208.39.172.0/22               208.39.128.0/18
    208.39.176.0/23               208.39.128.0/18
    208.39.178.0/23               208.39.128.0/18
    208.39.180.0/22               208.39.128.0/18
    208.39.190.0/23               208.39.128.0/18
    216.45.224.0/20               216.45.128.0/17
    216.45.240.0/22               216.45.128.0/17
    206.82.16.0/21                206.82.16.0/20

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

    + 72.55.8.0/21                Announced
    + 72.55.32.0/19               Announced
    - 206.82.16.0/21              Withdrawn

Whois Entry

whois: 402603

IANA has recorded AS13385 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS13385\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:       13385
             ASName:         COMCAST-TELECOMM
             ASHandle:       AS13385
             RegDate:        1999-05-25
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/13385
             
             
             
             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.
             #