Report for 20001

Name

TWC-20001-PACWEST - Charter Communications Inc, 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.

20001 ROADRUNNER-WEST - Road Runner HoldCo LLC

  Adjacency:     9  Upstream:     2  Downstream:     7
  Upstream Adjacent AS list
    AS1668    AOL-ATDN - AOL Transit Data Network
    AS3356    LEVEL3 Level 3 Communications
  Downstream Adjacent AS list
    AS10294   CCCD-AS - Coast Community College District
    AS10311   SCRR-10311 - Road Runner HoldCo LLC
    AS12011   LAXNORMANDIECLUB - Normandie Club, LP
    AS32594   AUGUSTINE-GAMING-MANAGEMENT-CORP - AUGUSTINE GAMING MANAGEMENT CORP.
    AS33761   VNVN - VNVN System Inc.
    AS7757    CCCH-AS4 - Comcast Cable Communications Holdings, Inc
    AS10838   OCEANIC-INTERNET-RR - Oceanic Internet

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
142   AS20001  ORG+TRN Originate:    2302720 /10.87  Transit:     892160 /12.23 ROADRUNNER-WEST - Road Runner HoldCo LLC

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       %
 1101 AS20001 ROADRUNNER-WEST - Road Runner HoldCo LLC     90     15      3     78     12  13.33%


  Prefix               AS Path                              Aggregation Suggestion
  24.24.128.0/17       4637 3356 20001        
  24.30.160.0/19       4637 3356 20001        
  24.54.224.0/19       4637 3356 20001        
  24.55.0.0/18         4637 3356 20001        
  24.136.64.0/19       4637 3356 20001        
  24.152.128.0/18      4637 3356 20001        
  24.160.32.0/20       4637 1668 20001 20001   
  24.161.192.0/19      4637 3356 20001        
  24.165.64.0/19       4637 3356 20001        
  24.171.128.0/19      4637 3356 20001        
  24.199.0.0/18        4637 3356 20001        
  64.183.0.0/17        4637 3356 20001        
  64.183.0.0/22        4637 3356 20001      - Withdrawn - matching aggregate 64.183.0.0/17 4637 3356 20001
  64.203.0.0/18        4637 3356 20001        
  65.28.128.0/19       4637 3356 20001        
  66.27.0.0/16         4637 3356 20001        
  66.74.0.0/15         4637 3356 20001      + Announce - aggregate of 66.74.0.0/16 (4637 3356 20001) and 66.75.0.0/16 (4637 3356 20001)
  66.74.0.0/16         4637 3356 20001      - Withdrawn - aggregated with 66.75.0.0/16 (4637 3356 20001)
  66.75.0.0/16         4637 3356 20001      - Withdrawn - aggregated with 66.74.0.0/16 (4637 3356 20001)
  66.133.192.0/18      4637 3356 20001        
  67.49.0.0/16         4637 3356 20001        
  67.52.96.0/19        4637 3356 20001        
  67.52.160.0/19       4637 3356 20001        
  67.53.96.0/19        4637 3356 20001      + Announce - aggregate of 67.53.96.0/20 (4637 3356 20001) and 67.53.112.0/20 (4637 3356 20001)
  67.53.96.0/20        4637 3356 20001      - Withdrawn - aggregated with 67.53.112.0/20 (4637 3356 20001)
  67.53.112.0/20       4637 3356 20001      - Withdrawn - aggregated with 67.53.96.0/20 (4637 3356 20001)
  67.58.128.0/19       4637 3356 20001        
  68.64.208.0/20       4637 3356 20001        
  68.65.192.0/18       4637 3356 20001        
  68.66.64.0/18        4637 3356 20001        
  68.67.16.0/21        4637 3356 20001        
  68.68.192.0/19       4637 3356 20001        
  68.70.208.0/20       4637 3356 20001        
  68.70.224.0/19       4637 3356 20001        
  68.171.32.0/19       4637 3356 20001        
  68.234.32.0/19       4637 3356 20001        
  69.63.80.0/21        4637 3356 20001        
  69.75.0.0/16         4637 3356 20001        
  69.75.32.0/20        4637 3356 20001      - Withdrawn - matching aggregate 69.75.0.0/16 4637 3356 20001
  69.162.64.0/19       4637 3356 20001        
  69.169.0.0/17        4637 3356 20001        
  70.32.64.0/18        4637 3356 20001        
  70.33.64.0/18        4637 3356 20001        
  70.35.0.0/18         4637 3356 20001        
  70.92.96.0/19        4637 3356 20001        
  70.93.0.0/16         4637 3356 20001        
  71.44.32.0/20        4637 3356 20001        
  72.31.28.0/22        4637 3356 20001        
  72.129.0.0/17        4637 3356 20001        
  72.130.0.0/16        4637 3356 20001        
  72.132.0.0/16        4637 3356 20001        
  72.134.0.0/16        4637 3356 20001        
  74.62.0.0/18         4637 3356 20001        
  74.62.144.0/20       4637 3356 20001        
  74.62.144.0/21       4637 3356 20001      - Withdrawn - matching aggregate 74.62.144.0/20 4637 3356 20001
  74.62.168.0/21       4637 3356 20001        
  74.62.192.0/18       4637 3356 20001        
  75.80.0.0/16         4637 3356 20001        
  75.81.176.0/20       4637 3356 20001        
  75.82.0.0/15         4637 3356 20001        
  75.84.0.0/16         4637 3356 20001        
  75.85.0.0/17         4637 3356 20001        
  75.85.192.0/19       4637 3356 20001        
  75.85.224.0/20       4637 3356 20001        
  75.114.128.0/20      4637 3356 20001        
  76.79.64.0/18        4637 3356 20001        
  76.79.64.0/21        4637 3356 20001      - Withdrawn - matching aggregate 76.79.64.0/18 4637 3356 20001
  76.79.80.0/22        4637 3356 20001      - Withdrawn - matching aggregate 76.79.64.0/18 4637 3356 20001
  76.80.0.0/15         4637 3356 20001        
  76.81.0.0/16         4637 3356 20001      - Withdrawn - matching aggregate 76.80.0.0/15 4637 3356 20001
  76.82.0.0/16         4637 3356 20001        
  76.82.0.0/17         4637 3356 20001      - Withdrawn - matching aggregate 76.82.0.0/16 4637 3356 20001
  76.83.0.0/17         4637 3356 20001        
  76.83.0.0/18         4637 3356 20001      - Withdrawn - matching aggregate 76.83.0.0/17 4637 3356 20001
  76.83.192.0/18       4637 3356 20001        
  76.166.16.0/20       4637 3356 20001        
  76.166.96.0/20       4637 3356 20001        
  76.166.128.0/17      4637 3356 20001        
  76.167.0.0/16        4637 3356 20001        
  76.172.0.0/14        4637 3356 20001        
  76.174.0.0/15        4637 3356 20001      - Withdrawn - matching aggregate 76.172.0.0/14 4637 3356 20001
  76.175.64.0/19       4637 3356 20001 20001 20001   
  97.69.176.0/20       4637 3356 20001        
  198.245.206.0/24     4637 3356 20001        
  199.89.247.0/24      4637 3356 20001        
  204.27.239.0/24      4637 3356 20001        
  204.58.140.0/23      4637 3356 20001      + Announce - aggregate of 204.58.140.0/24 (4637 3356 20001) and 204.58.141.0/24 (4637 3356 20001)
  204.58.140.0/24      4637 3356 20001      - Withdrawn - aggregated with 204.58.141.0/24 (4637 3356 20001)
  204.58.141.0/24      4637 3356 20001      - Withdrawn - aggregated with 204.58.140.0/24 (4637 3356 20001)
  204.58.142.0/24      4637 3356 20001        
  204.140.250.0/24     4637 3356 20001        
  205.153.188.0/22     4637 3356 20001        
  208.65.248.0/22      4637 3356 20001        

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

AS20001   72 More Specifics   102 Total Advertisements   ROADRUNNER-WEST - Road Runner HoldCo LLC
    24.24.128.0/17                24.24.0.0/14
    24.30.160.0/19                24.30.128.0/18
    24.160.32.0/20                24.160.0.0/13
    24.161.192.0/19               24.160.0.0/13
    24.165.64.0/19                24.160.0.0/13
    64.183.0.0/22                 64.183.0.0/17
    65.28.128.0/19                65.28.0.0/14
    66.74.0.0/16                  66.74.0.0/15
    66.75.0.0/16                  66.74.0.0/15
    66.75.186.0/24                66.74.0.0/15
    67.49.0.0/16                  67.48.0.0/15
    67.52.96.0/19                 67.52.0.0/15
    67.52.160.0/19                67.52.0.0/15
    67.53.96.0/20                 67.52.0.0/15
    67.53.112.0/20                67.52.0.0/15
    68.70.208.0/20                68.70.192.0/18
    68.70.224.0/19                68.70.192.0/18
    69.75.0.0/16                  69.75.0.0/15
    69.75.32.0/20                 69.75.0.0/15
    70.92.96.0/19                 70.92.0.0/14
    70.93.0.0/16                  70.92.0.0/14
    71.44.32.0/20                 71.44.0.0/14
    72.31.28.0/22                 72.31.0.0/16
    72.129.0.0/17                 72.128.0.0/13
    72.130.0.0/16                 72.128.0.0/13
    72.132.0.0/16                 72.128.0.0/13
    72.134.0.0/16                 72.128.0.0/13
    74.62.0.0/18                  74.62.0.0/16
    74.62.144.0/20                74.62.0.0/16
    74.62.144.0/21                74.62.0.0/16
    74.62.168.0/21                74.62.0.0/16
    74.62.192.0/18                74.62.0.0/16
    74.62.200.0/22                74.62.0.0/16
    74.87.0.0/18                  74.87.0.0/17
    75.80.0.0/16                  75.80.0.0/13
    75.81.176.0/20                75.80.0.0/13
    75.82.0.0/15                  75.80.0.0/13
    75.84.0.0/16                  75.80.0.0/13
    75.85.0.0/17                  75.80.0.0/13
    75.85.192.0/19                75.80.0.0/13
    75.85.224.0/20                75.80.0.0/13
    75.114.128.0/20               75.112.0.0/14
    76.79.64.0/18                 76.79.0.0/16
    76.79.64.0/21                 76.79.0.0/16
    76.79.80.0/22                 76.79.0.0/16
    76.79.128.0/17                76.79.0.0/16
    76.79.192.0/18                76.79.0.0/16
    76.80.0.0/15                  76.80.0.0/13
    76.81.0.0/16                  76.80.0.0/13
    76.82.0.0/16                  76.80.0.0/13
    76.82.0.0/17                  76.80.0.0/13
    76.82.64.0/19                 76.80.0.0/13
    76.83.0.0/17                  76.80.0.0/13
    76.83.0.0/18                  76.80.0.0/13
    76.83.192.0/18                76.80.0.0/13
    76.86.0.0/15                  76.80.0.0/13
    76.86.0.0/16                  76.80.0.0/13
    76.88.192.0/19                76.88.0.0/16
    76.88.224.0/19                76.88.0.0/16
    76.166.16.0/20                76.166.0.0/15
    76.166.32.0/19                76.166.0.0/15
    76.166.96.0/20                76.166.0.0/15
    76.166.128.0/17               76.166.0.0/15
    76.167.0.0/16                 76.166.0.0/15
    76.172.0.0/14                 76.168.0.0/13
    76.174.0.0/15                 76.168.0.0/13
    76.175.64.0/19                76.168.0.0/13
    97.69.176.0/20                97.69.128.0/18
    204.58.140.0/24               204.58.140.0/22
    204.58.141.0/24               204.58.140.0/22
    204.58.142.0/24               204.58.140.0/22
    204.140.250.0/24              204.140.128.0/17

Bogus Prefixes Announced by this AS

Prefix	Origin AS	AS Description	Unallocated block
192.150.116.0/24	AS20001	TWC-20001-PACWEST - Charter Communications Inc, US	192.150.116.0 - 192.150.116.255
199.33.78.0/24	AS20001	TWC-20001-PACWEST - Charter Communications Inc, US	199.33.78.0 - 199.33.78.255

Whois Entry

whois: 402603

IANA has recorded AS20001 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS20001\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:       20001
             ASName:         TWC-20001-PACWEST
             ASHandle:       AS20001
             RegDate:        2001-03-13
             Updated:        2018-11-27
             Ref:            https://rdap.arin.net/registry/autnum/20001
             
             
             
             OrgName:        Charter Communications Inc
             OrgId:          CC-3517
             Address:        6175 S. Willow Dr
             City:           Greenwood Village
             StateProv:      CO
             PostalCode:     80111
             Country:        US
             RegDate:        2018-10-10
             Updated:        2022-09-14
             Comment:        Legacy Time Warner Cable IP Assets
             Ref:            https://rdap.arin.net/registry/entity/CC-3517
             
             
             OrgTechHandle: IPADD1-ARIN
             OrgTechName:   IPAddressing
             OrgTechPhone:  +1-866-248-7662 
             OrgTechEmail:  PublicIPAddressing@charter.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IPADD1-ARIN
             
             OrgAbuseHandle: ABUSE19-ARIN
             OrgAbuseName:   Abuse
             OrgAbusePhone:  +1-877-777-2263 
             OrgAbuseEmail:  abuse@charter.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE19-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.
             #