Report for 19157

Name

CHARTER-19157-DC - 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.

19157 CHARTER-19157-DC - Charter Communications LLC, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS20115         CHARTER-20115 - Charter Communications LLC, US
    AS11426         TWC-11426-CAROLINAS - Charter Communications Inc, US
    AS11427         TWC-11427-TEXAS - Charter Communications Inc, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15047 AS19157        ORIGIN  Originate:       5120 /19.68  Transit:          0 /0.00  CHARTER-19157-DC - 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       %
10007 AS19157       CHARTER-19157-DC - Charter Communications LLC     12      8      4      8      4  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  23.86.14.0/23        4777 6939 7843 11427 19157   
  23.86.16.0/22        4777 6939 7843 11426 19157 + Announce - aggregate of 23.86.16.0/23 (4777 6939 7843 11426 19157) and 23.86.18.0/23 (4777 6939 7843 11426 19157)
  23.86.16.0/23        4777 6939 7843 11426 19157 - Withdrawn - aggregated with 23.86.18.0/23 (4777 6939 7843 11426 19157)
  23.86.18.0/23        4777 6939 7843 11426 19157 - Withdrawn - aggregated with 23.86.16.0/23 (4777 6939 7843 11426 19157)
  23.86.20.0/22        4777 6939 7843 11427 19157 + Announce - aggregate of 23.86.20.0/23 (4777 6939 7843 11427 19157) and 23.86.22.0/23 (4777 6939 7843 11427 19157)
  23.86.20.0/23        4777 6939 7843 11427 19157 - Withdrawn - aggregated with 23.86.22.0/23 (4777 6939 7843 11427 19157)
  23.86.22.0/23        4777 6939 7843 11427 19157 - Withdrawn - aggregated with 23.86.20.0/23 (4777 6939 7843 11427 19157)
  23.86.24.0/24        4777 6939 20115 19157   
  23.86.25.0/24        4777 6939 7843 11426 19157   
  23.86.26.0/23        4777 6939 20115 19157   
  23.86.28.0/22        4777 6939 20115 19157 + Announce - aggregate of 23.86.28.0/23 (4777 6939 20115 19157) and 23.86.30.0/23 (4777 6939 20115 19157)
  23.86.28.0/23        4777 6939 20115 19157 - Withdrawn - aggregated with 23.86.30.0/23 (4777 6939 20115 19157)
  23.86.30.0/23        4777 6939 20115 19157 - Withdrawn - aggregated with 23.86.28.0/23 (4777 6939 20115 19157)
  47.42.246.0/23       4777 6939 20115 19157 + Announce - aggregate of 47.42.246.0/24 (4777 6939 20115 19157) and 47.42.247.0/24 (4777 6939 20115 19157)
  47.42.246.0/24       4777 6939 20115 19157 - Withdrawn - aggregated with 47.42.247.0/24 (4777 6939 20115 19157)
  47.42.247.0/24       4777 6939 20115 19157 - Withdrawn - aggregated with 47.42.246.0/24 (4777 6939 20115 19157)

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

AS19157   12 More Specifics   12 Total Advertisements   CHARTER-19157-DC - Charter Communications LLC, US
    23.86.14.0/23                 23.84.0.0/14
    23.86.16.0/23                 23.84.0.0/14
    23.86.18.0/23                 23.84.0.0/14
    23.86.20.0/23                 23.84.0.0/14
    23.86.22.0/23                 23.84.0.0/14
    23.86.24.0/24                 23.84.0.0/14
    23.86.25.0/24                 23.84.0.0/14
    23.86.26.0/23                 23.84.0.0/14
    23.86.28.0/23                 23.84.0.0/14
    23.86.30.0/23                 23.84.0.0/14
    47.42.246.0/24                47.32.0.0/12
    47.42.247.0/24                47.32.0.0/12

Whois Entry

whois: 402332

IANA has recorded AS19157 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19157\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:       19157
             ASName:         CHARTER-19157-DC
             ASHandle:       AS19157
             RegDate:        2000-11-29
             Updated:        2018-11-20
             Ref:            https://rdap.arin.net/registry/autnum/19157
             
             
             
             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.
             #