Report for 27431

Name

CHARTER-27431-NA - 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 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.

27431 JTLNET - JTL Networks Inc.

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS174     COGENT Cogent/PSI
    AS2828    XO-AS15 - XO Communications

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
6200  AS27431  ORIGIN  Originate:      10240 /18.68  Transit:          0 /0.00  JTLNET - JTL Networks Inc.

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       %
 1794 AS27431 JTLNET - JTL Networks Inc.                   25     10      3     18      7  28.00%


  Prefix               AS Path                              Aggregation Suggestion
  66.132.44.0/22       4637 2828 27431      + Announce - aggregate of 66.132.44.0/23 (4637 2828 27431) and 66.132.46.0/23 (4637 2828 27431)
  66.132.44.0/24       4637 2828 27431      - Withdrawn - aggregated with 66.132.45.0/24 (4637 2828 27431)
  66.132.45.0/24       4637 2828 27431      - Withdrawn - aggregated with 66.132.44.0/24 (4637 2828 27431)
  66.132.46.0/24       4637 2828 27431      - Withdrawn - aggregated with 66.132.47.0/24 (4637 2828 27431)
  66.132.47.0/24       4637 2828 27431      - Withdrawn - aggregated with 66.132.46.0/24 (4637 2828 27431)
  69.36.0.0/20         4637 2828 27431        
  209.41.200.0/24      4637 2828 27431        
  209.41.202.0/24      4637 2828 27431        
  209.115.40.0/22      4637 2828 27431      + Announce - aggregate of 209.115.40.0/23 (4637 2828 27431) and 209.115.42.0/23 (4637 2828 27431)
  209.115.40.0/24      4637 2828 27431      - Withdrawn - aggregated with 209.115.41.0/24 (4637 2828 27431)
  209.115.41.0/24      4637 2828 27431      - Withdrawn - aggregated with 209.115.40.0/24 (4637 2828 27431)
  209.115.42.0/24      4637 2828 27431      - Withdrawn - aggregated with 209.115.43.0/24 (4637 2828 27431)
  209.115.43.0/24      4637 2828 27431      - Withdrawn - aggregated with 209.115.42.0/24 (4637 2828 27431)
  209.115.108.0/24     4637 2828 27431        
  216.28.47.0/24       4637 2828 27431        
  216.28.134.0/24      4637 2828 27431        
  216.29.53.0/24       4637 2828 27431        
  216.29.112.0/24      4637 2828 27431        
  216.29.115.0/24      4637 2828 27431        
  216.29.116.0/23      4637 2828 27431      + Announce - aggregate of 216.29.116.0/24 (4637 2828 27431) and 216.29.117.0/24 (4637 2828 27431)
  216.29.116.0/24      4637 2828 27431      - Withdrawn - aggregated with 216.29.117.0/24 (4637 2828 27431)
  216.29.117.0/24      4637 2828 27431      - Withdrawn - aggregated with 216.29.116.0/24 (4637 2828 27431)
  216.29.121.0/24      4637 2828 27431        
  216.29.122.0/24      4637 2828 27431        
  216.29.152.0/24      4637 2828 27431        
  216.29.194.0/24      4637 2828 27431        
  216.29.247.0/24      4637 2828 27431        
  216.29.254.0/24      4637 2828 27431        

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

AS27431   24 More Specifics   25 Total Advertisements   JTLNET - JTL Networks Inc.
    66.132.44.0/24                66.132.0.0/17
    66.132.45.0/24                66.132.0.0/17
    66.132.46.0/24                66.132.0.0/17
    66.132.47.0/24                66.132.0.0/17
    209.41.200.0/24               209.41.192.0/18
    209.41.202.0/24               209.41.192.0/18
    209.115.40.0/24               209.115.0.0/17
    209.115.41.0/24               209.115.0.0/17
    209.115.42.0/24               209.115.0.0/17
    209.115.43.0/24               209.115.0.0/17
    209.115.108.0/24              209.115.0.0/17
    216.28.47.0/24                216.28.0.0/15
    216.28.134.0/24               216.28.0.0/15
    216.29.53.0/24                216.28.0.0/15
    216.29.112.0/24               216.28.0.0/15
    216.29.115.0/24               216.28.0.0/15
    216.29.116.0/24               216.28.0.0/15
    216.29.117.0/24               216.28.0.0/15
    216.29.121.0/24               216.28.0.0/15
    216.29.122.0/24               216.28.0.0/15
    216.29.152.0/24               216.28.0.0/15
    216.29.194.0/24               216.28.0.0/15
    216.29.247.0/24               216.28.0.0/15
    216.29.254.0/24               216.28.0.0/15

Whois Entry

whois: 402603

IANA has recorded AS27431 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27431\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:       27431
             ASName:         CHARTER-27431-NA
             ASHandle:       AS27431
             RegDate:        2017-07-25
             Updated:        2018-11-20
             Ref:            https://rdap.arin.net/registry/autnum/27431
             
             
             
             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.
             #