Report for 33588

Name

BRESNAN-33588 - Charter 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.

33588 BRESNAN-33588 - Charter Communications LLC, US

  Adjacency:    11  Upstream:     2  Downstream:     9
  Upstream Adjacent AS list
    AS7843          TWC-7843-BB - Charter Communications Inc, US
    AS20115         CHARTER-20115 - Charter Communications LLC, US
  Downstream Adjacent AS list
    AS32146         COB-MT - City of Bozeman, US
    AS13476         MSU-BOZEMAN - Montana State University, US
    AS394913        AIRGRIDS - AirGrids, US
    AS393367        SJMC-TCHD-3 - Teton County Hospital District, US
    AS395888        -Reserved AS-, ZZ
    AS401920        MOW-MT - Montana Outback Wireless Inc., US
    AS25816         TOURO - Touro College, US
    AS19115         CHARTER-19115-DC - Charter Communications LLC, US
    AS62817         BARRETTHOSPITAL - BARRETT HOSPITAL AND HEALHCARE, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
505   AS33588        ORG+TRN Originate:     841984 /12.32  Transit:       4352 /19.91 BRESNAN-33588 - Charter 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       %
40459 AS33588       BRESNAN-33588 - Charter Communications LLC, U     39      0      0     39      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  35.131.32.0/19       4777 2516 20115 33588   
  35.132.0.0/24        4777 2516 20115 33588   
  35.132.32.0/24       4777 2516 20115 33588   
  35.132.48.0/20       4777 2516 20115 33588   
  35.133.0.0/18        4777 2516 20115 33588   
  35.134.192.0/18      4777 2516 20115 33588   
  35.150.64.0/18       4777 2516 20115 33588   
  35.151.208.0/20      4777 2516 20115 33588   
  47.5.0.0/17          4777 2516 20115 33588   
  47.28.192.0/18       4777 2516 20115 33588   
  47.37.0.0/18         4777 2516 20115 33588   
  47.44.112.0/20       4777 2516 20115 33588   
  47.45.128.0/17       4777 2516 20115 33588   
  47.47.128.0/18       4777 2516 20115 33588   
  47.231.228.0/22      4777 2516 20115 33588   
  69.144.0.0/15        4777 2516 20115 33588   
  69.146.0.0/16        4777 2516 20115 33588   
  71.15.192.0/19       4777 2516 20115 33588   
  71.85.191.0/24       4777 6939 20115 33588   
  72.174.0.0/15        4777 2516 20115 33588   
  75.143.192.0/19      4777 2516 20115 33588   
  76.58.56.0/23        4777 2516 20115 33588   
  98.127.0.0/16        4777 2516 20115 33588   
  137.26.64.0/18       4777 2516 20115 33588   
  150.181.24.0/23      4777 2516 20115 33588   
  150.181.26.0/24      4777 2516 20115 33588   
  150.181.91.0/24      4777 2516 20115 33588   
  150.224.249.0/24     4777 2516 20115 33588   
  159.111.0.0/21       4777 2516 7843 33588   
  159.111.8.0/22       4777 2516 7843 33588   
  159.111.12.0/22      4777 6939 20115 33588   
  159.111.16.0/20      4777 6939 20115 33588   
  172.221.64.0/18      4777 2516 20115 33588   
  173.40.192.0/20      4777 2516 20115 33588   
  174.45.0.0/16        4777 2516 20115 33588   
  184.166.0.0/15       4777 2516 20115 33588   
  192.61.208.0/21      4777 2516 20115 33588   
  192.61.246.0/23      4777 2516 20115 33588   
  192.61.255.0/24      4777 2516 20115 33588   

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

AS33588   33 More Specifics   39 Total Advertisements   BRESNAN-33588 - Charter Communications LLC, US
    35.131.32.0/19                35.130.0.0/15
    35.132.0.0/24                 35.132.0.0/14
    35.132.32.0/24                35.132.0.0/14
    35.132.48.0/20                35.132.0.0/14
    35.133.0.0/18                 35.132.0.0/14
    35.134.192.0/18               35.132.0.0/14
    35.150.64.0/18                35.144.0.0/13
    35.151.208.0/20               35.144.0.0/13
    47.5.0.0/17                   47.0.0.0/13
    47.28.192.0/18                47.28.0.0/16
    47.37.0.0/18                  47.32.0.0/12
    47.44.112.0/20                47.32.0.0/12
    47.45.128.0/17                47.32.0.0/12
    47.47.128.0/18                47.32.0.0/12
    47.231.228.0/22               47.224.0.0/13
    71.15.192.0/19                71.8.0.0/13
    71.85.191.0/24                71.80.0.0/12
    75.143.192.0/19               75.128.0.0/12
    76.58.56.0/23                 76.32.0.0/11
    137.26.64.0/18                137.26.0.0/15
    150.181.24.0/23               150.181.0.0/16
    150.181.26.0/24               150.181.0.0/16
    150.181.91.0/24               150.181.0.0/16
    150.224.249.0/24              150.224.0.0/16
    159.111.0.0/21                159.111.0.0/16
    159.111.8.0/22                159.111.0.0/16
    159.111.12.0/22               159.111.0.0/16
    159.111.16.0/20               159.111.0.0/16
    172.221.64.0/18               172.220.0.0/14
    173.40.192.0/20               173.40.0.0/14
    192.61.208.0/21               192.60.0.0/14
    192.61.246.0/23               192.60.0.0/14
    192.61.255.0/24               192.60.0.0/14

Bogus ASes Announced by this AS

Bogus AS		Announcing-AS
AS395888	Announced by	AS33588	BRESNAN-33588 - Charter Communications LLC, US

Whois Entry

whois: 402332

IANA has recorded AS33588 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33588\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:       33588
             ASName:         BRESNAN-33588
             ASHandle:       AS33588
             RegDate:        2005-01-27
             Updated:        2018-11-20
             Ref:            https://rdap.arin.net/registry/autnum/33588
             
             
             
             OrgName:        Charter Communications LLC
             OrgId:          CC04
             Address:        6175 S. Willow Dr
             City:           Greenwood Village
             StateProv:      CO
             PostalCode:     80111
             Country:        US
             RegDate:        
             Updated:        2025-02-10
             Ref:            https://rdap.arin.net/registry/entity/CC04
             
             
             OrgAbuseHandle: ABUSE19-ARIN
             OrgAbuseName:   Abuse
             OrgAbusePhone:  +1-877-777-2263 
             OrgAbuseEmail:  abuse@charter.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE19-ARIN
             
             OrgTechHandle: IPADD1-ARIN
             OrgTechName:   IPAddressing
             OrgTechPhone:  +1-866-248-7662 
             OrgTechEmail:  PublicIPAddressing@charter.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IPADD1-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.
             #