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 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.

33588 BRESNAN-33588, US

  Adjacency:    15  Upstream:     2  Downstream:    13
  Upstream Adjacent AS list
    AS20115         CHARTER-20115, US
    AS7843          TWC-7843-BB, US
  Downstream Adjacent AS list
    AS13476         MSU-BOZEMAN, US
    AS11512         PDM, US
    AS393657        COLORADOMESAUNIVERSITY, US
    AS13590         MDMH, US
    AS32146         COB-MT, US
    AS394913        AIRGRIDS, US
    AS393367        SJMC-TCHD-3, US
    AS25816         TOURO, US
    AS19115         CHARTER-19115-DC, US
    AS401920        --No Registry Entry--
    AS395888        ANDERSON-ZURMUEHLEN-TECHNOLOGY-SEVICES, US
    AS395251        BHS-MT, US
    AS62817         BARRETTHOSPITAL, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
504   AS33588        ORG+TRN Originate:     841984 /12.32  Transit:       6656 /19.30 BRESNAN-33588, 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       %
40302 AS33588       BRESNAN-33588, US                                 39      0      0     39      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  35.131.32.0/19       293 20115 33588        
  35.132.0.0/24        293 20115 33588        
  35.132.32.0/24       293 20115 33588        
  35.132.48.0/20       293 20115 33588        
  35.133.0.0/18        293 20115 33588        
  35.134.192.0/18      293 20115 33588        
  35.150.64.0/18       293 20115 33588        
  35.151.208.0/20      293 20115 33588        
  47.5.0.0/17          293 20115 33588        
  47.28.192.0/18       293 20115 33588        
  47.37.0.0/18         293 20115 33588        
  47.44.112.0/20       293 20115 33588        
  47.45.128.0/17       293 20115 33588        
  47.47.128.0/18       293 20115 33588        
  47.231.228.0/22      293 20115 33588        
  69.144.0.0/15        293 20115 33588        
  69.146.0.0/16        293 20115 33588        
  71.15.192.0/19       293 20115 33588        
  71.85.191.0/24       293 20115 33588        
  72.174.0.0/15        293 20115 33588        
  75.143.192.0/19      293 20115 33588        
  76.58.56.0/23        293 20115 33588        
  98.127.0.0/16        293 20115 33588        
  137.26.64.0/18       293 20115 33588        
  150.181.24.0/23      293 20115 33588        
  150.181.26.0/24      293 20115 33588        
  150.181.91.0/24      293 20115 33588        
  150.224.249.0/24     293 20115 33588        
  159.111.0.0/21       293 7843 33588         
  159.111.8.0/22       293 7843 33588         
  159.111.12.0/22      3257 20115 33588       
  159.111.16.0/20      3257 20115 33588       
  172.221.64.0/18      293 20115 33588        
  173.40.192.0/20      293 20115 33588        
  174.45.0.0/16        293 20115 33588        
  184.166.0.0/15       293 20115 33588        
  192.61.208.0/21      293 20115 33588        
  192.61.246.0/23      293 20115 33588        
  192.61.255.0/24      293 20115 33588        

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

AS33588   25 More Specifics   31 Total Advertisements   BRESNAN-33588, 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
    35.133.0.0/18                 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
    75.143.192.0/19               75.128.0.0/12
    137.26.64.0/18                137.26.0.0/15
    150.181.24.0/23               150.181.0.0/16
    150.181.91.0/24               150.181.0.0/16
    159.111.0.0/21                159.111.0.0/16
    159.111.8.0/22                159.111.0.0/16
    172.221.64.0/18               172.220.0.0/14
    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
    76.58.56.0/23                 76.32.0.0/11

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

    - 76.58.56.0/23               Withdrawn

Bogus ASes Announced by this AS

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

Whois Entry

whois: 402590

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.
             #