Report for 33490

Name

COMCAST-33490 - 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 AS2.0) 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.

33490 COMCAST-33490 - Comcast Cable Communications, LLC, US

  Adjacency:    39  Upstream:     1  Downstream:    38
  Upstream Adjacent AS list
    AS7922          COMCAST-7922 - Comcast Cable Communications, LLC, US
  Downstream Adjacent AS list
    AS11746         WAGGENER-EDSTROM - Waggener Edstrom Worldwide, Inc., US
    AS11396         TWC-ASN - Williams Information Technology LLC, US
    AS13541         SIEMENS-DISW-WIV-B-ORW - Siemens Industry Software Inc., US
    AS11995         OHSU - Oregon Health & Science University, US
    AS14327         PGE-ONLINE - Portland General Electric Company, US
    AS13888         BEARCREEK-AS - Bear Creek Operations Inc, US
    AS1823          HANNAH-MOTOR - Hannah Motor Company, US
    AS15045         KITTELSON - KITTELSON AND ASSOCIATES, INC., US
    AS21718         NW-NATURAL-GAS - Northwest Natural Gas, US
    AS23182         GREENBRIER-AS - THE GREENBRIER COMPANIES, INC., US
    AS22171         IPSV-ASN1 - IP Services, US
    AS18661         DCA-BGP - Dunn Carney Allen Higgins & Tongue, LLP, US
    AS23431         -Reserved AS-, US
    AS29984         WILLAMETTE - Willamette University, US
    AS31128         SHAZAM-AS, IE
    AS29921         SAIFCO - State Accident Insurance Fund Corporation, US
    AS36564         SIEMENS-DISW-WIV-B-TAH - Siemens Industry Software Inc., US
    AS395141        PRMHQ-AS1 - Primisys Computer Systems & Support, LLC, US
    AS393408        UNIV-PORTLAND - University of Portland, US
    AS36612         CLARKCOUNTYWA - Clark County WA, US
    AS397819        CPI - Consumers Power, Inc., US
    AS397510        CPI - Consumers Power, Inc., US
    AS39949         CITYOFVANCOUVER-US - City Of Vancouver, US
    AS398977        PACIFICU-OREGON - Pacific University, US
    AS396115        ILANIRESORT - Ilani Resort, US
    AS36040         YOUTUBE - Google LLC, US
    AS25652         AS-SHCFCU - InRoads Federal Credit Union, US
    AS399540        ABSCI-US-001 - AbSci Corporation, US
    AS23408         TBI-001 - Trail Blazers, Inc., US
    AS40227         IPNS-LAB - IP Networked Services Inc., US
    AS54067         CSC-ASN - Columbia Sportswear Company, US
    AS5705          COLUMBIA-CREDIT-UNION - Columbia Community Credit Union, US
    AS53752         USDIGITAL - US Digital, US
    AS7441          OMEGADC - Omega Datacenters, LLC, US
    AS7406          PDX-DC - B&R Auto, US
    AS53531         SENECA-ASN - Seneca Sawmill Company, US
    AS401151        MCOR-AS - Marion County, US
    AS400517        LINESPEED - Linespeed, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
7653  AS33490        ORG+TRN Originate:      16640 /17.98  Transit:     273152 /13.94 COMCAST-33490 - Comcast Cable Communications, LLC, 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       %
16104 AS33490       COMCAST-33490 - Comcast Cable Communications,     38      4      2     36      2   5.26%


  Prefix               AS Path                              Aggregation Suggestion
  50.204.255.0/24      4777 2516 7922 33490   
  50.206.113.0/24      4777 2516 7922 33490   
  50.228.52.0/24       4777 2516 7922 33490   
  50.228.76.0/24       4777 2516 7922 33490   
  50.229.227.0/24      4777 2516 7922 33490   
  50.232.199.0/24      4777 2516 7922 33490   
  50.236.220.0/24      4777 2516 7922 33490   
  50.238.126.0/23      4777 2516 7922 33490 + Announce - aggregate of 50.238.126.0/24 (4777 2516 7922 33490) and 50.238.127.0/24 (4777 2516 7922 33490)
  50.238.126.0/24      4777 2516 7922 33490 - Withdrawn - aggregated with 50.238.127.0/24 (4777 2516 7922 33490)
  50.238.127.0/24      4777 2516 7922 33490 - Withdrawn - aggregated with 50.238.126.0/24 (4777 2516 7922 33490)
  72.19.22.0/24        4777 2516 7922 33490   
  74.49.229.0/24       4777 2516 7922 33490   
  74.49.241.0/24       4777 2516 7922 33490   
  74.49.243.0/24       4777 2516 7922 33490   
  74.49.245.0/24       4777 2516 7922 33490   
  74.49.247.0/24       4777 2516 7922 33490   
  74.50.12.0/22        4777 2516 7922 33490   
  104.145.48.0/20      4777 2516 7922 33490   
  104.247.154.0/23     4777 2516 7922 33490   
  107.0.49.0/24        4777 2516 7922 33490   
  107.0.67.0/24        4777 2516 7922 33490   
  129.134.133.0/24     4777 2516 7922 33490   
  129.134.134.0/24     4777 2516 7922 33490   
  140.99.27.0/24       4777 2516 7922 33490   
  140.99.59.0/24       4777 2516 7922 33490   
  140.99.123.0/24      4777 2516 7922 33490   
  140.99.151.0/24      4777 2516 7922 33490   
  140.99.211.0/24      4777 2516 7922 33490   
  173.211.82.0/23      4777 2516 7922 33490   
  192.83.221.0/24      4777 2516 7922 33490   
  199.244.171.0/24     4777 2516 7922 33490   
  199.244.172.0/24     4777 2516 7922 33490   
  204.76.179.0/24      4777 2516 7922 33490   
  204.76.180.0/23      4777 2516 7922 33490   
  205.234.233.0/24     4777 2516 7922 33490   
  216.122.120.0/21     4777 2516 7922 33490 + Announce - aggregate of 216.122.120.0/22 (4777 2516 7922 33490) and 216.122.124.0/22 (4777 2516 7922 33490)
  216.122.120.0/22     4777 2516 7922 33490 - Withdrawn - aggregated with 216.122.124.0/22 (4777 2516 7922 33490)
  216.122.124.0/22     4777 2516 7922 33490 - Withdrawn - aggregated with 216.122.120.0/22 (4777 2516 7922 33490)
  216.246.30.0/24      4777 2516 7922 33490   
  216.246.122.0/24     4777 2516 7922 33490   

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

AS33490   32 More Specifics   38 Total Advertisements   COMCAST-33490 - Comcast Cable Communications, LLC, US
    50.204.255.0/24               50.128.0.0/9
    50.206.113.0/24               50.128.0.0/9
    50.228.52.0/24                50.128.0.0/9
    50.228.76.0/24                50.128.0.0/9
    50.229.227.0/24               50.128.0.0/9
    50.232.199.0/24               50.128.0.0/9
    50.236.220.0/24               50.128.0.0/9
    50.238.126.0/24               50.128.0.0/9
    50.238.127.0/24               50.128.0.0/9
    74.49.229.0/24                74.49.192.0/18
    74.49.241.0/24                74.49.192.0/18
    74.49.243.0/24                74.49.192.0/18
    74.49.245.0/24                74.49.192.0/18
    74.49.247.0/24                74.49.192.0/18
    74.50.12.0/22                 74.50.0.0/19
    104.247.154.0/23              104.247.152.0/21
    107.0.49.0/24                 107.0.0.0/14
    107.0.67.0/24                 107.0.0.0/14
    129.134.133.0/24              129.134.0.0/16
    129.134.134.0/24              129.134.0.0/16
    140.99.27.0/24                140.99.0.0/16
    140.99.59.0/24                140.99.0.0/16
    140.99.123.0/24               140.99.0.0/16
    140.99.151.0/24               140.99.0.0/16
    140.99.211.0/24               140.99.0.0/16
    173.211.82.0/23               173.211.0.0/17
    204.76.179.0/24               204.76.176.0/22
    205.234.233.0/24              205.234.128.0/17
    216.122.120.0/22              216.122.112.0/20
    216.122.124.0/22              216.122.112.0/20
    216.246.30.0/24               216.246.0.0/17
    216.246.122.0/24              216.246.0.0/17

Whois Entry

whois: 402332

IANA has recorded AS33490 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33490\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:       33490
             ASName:         COMCAST-33490
             ASHandle:       AS33490
             RegDate:        2004-12-30
             Updated:        2021-01-25
             Ref:            https://rdap.arin.net/registry/autnum/33490
             
             
             
             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.
             #