Report for 23143

Name

ADMC-ONLINE - ATT Broadband, 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.

23143 ADMC-ONLINE - ATT Broadband

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS7018    ATT-INTERNET4 - AT&T WorldNet Services

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
11860 AS23143  ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  ADMC-ONLINE - ATT Broadband

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       %
 2013 AS23143 ADMC-ONLINE - ATT Broadband                   9      8      2      3      6  66.67%


  Prefix               AS Path                              Aggregation Suggestion
  12.41.68.0/22        4637 3491 3561 7018 23143 + Announce - aggregate of 12.41.68.0/23 (4637 3491 3561 7018 23143) and 12.41.70.0/23 (4637 3491 3561 7018 23143)
  12.41.68.0/24        4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.41.69.0/24 (4637 3491 3561 7018 23143)
  12.41.69.0/24        4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.41.68.0/24 (4637 3491 3561 7018 23143)
  12.41.70.0/24        4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.41.71.0/24 (4637 3491 3561 7018 23143)
  12.41.71.0/24        4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.41.70.0/24 (4637 3491 3561 7018 23143)
  12.109.232.0/22      4637 3491 3561 7018 23143 + Announce - aggregate of 12.109.232.0/23 (4637 3491 3561 7018 23143) and 12.109.234.0/23 (4637 3491 3561 7018 23143)
  12.109.232.0/24      4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.109.233.0/24 (4637 3491 3561 7018 23143)
  12.109.233.0/24      4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.109.232.0/24 (4637 3491 3561 7018 23143)
  12.109.234.0/24      4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.109.235.0/24 (4637 3491 3561 7018 23143)
  12.109.235.0/24      4637 3491 3561 7018 23143 - Withdrawn - aggregated with 12.109.234.0/24 (4637 3491 3561 7018 23143)
  12.242.24.0/24       4637 3491 3561 7018 23143   

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

AS23143   9 More Specifics   9 Total Advertisements   ADMC-ONLINE - ATT Broadband
    12.41.68.0/24                 12.0.0.0/8
    12.41.69.0/24                 12.0.0.0/8
    12.41.70.0/24                 12.0.0.0/8
    12.41.71.0/24                 12.0.0.0/8
    12.109.232.0/24               12.0.0.0/8
    12.109.233.0/24               12.0.0.0/8
    12.109.234.0/24               12.0.0.0/8
    12.109.235.0/24               12.0.0.0/8
    12.242.24.0/24                12.0.0.0/8

Whois Entry

whois: 402603

IANA has recorded AS23143 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS23143\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:       23143
             ASName:         ADMC-ONLINE
             ASHandle:       AS23143
             RegDate:        2002-01-30
             Updated:        2002-01-30
             Ref:            https://rdap.arin.net/registry/autnum/23143
             
             
             OrgName:        ATT Broadband
             OrgId:          ATTBRO-5
             Address:        4100 E.Drycreek Blvd.
             City:           Littleton
             StateProv:      CO
             PostalCode:     80122
             Country:        US
             RegDate:        2002-01-30
             Updated:        2012-10-10
             Ref:            https://rdap.arin.net/registry/entity/ATTBRO-5
             
             
             OrgTechHandle: JS3408-ARIN
             OrgTechName:   Sandoval, Joe 
             OrgTechPhone:  +1-303-712-3410 
             OrgTechEmail:  sandoval.joe.p@broadband.att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/JS3408-ARIN
             
             OrgAbuseHandle: JS3408-ARIN
             OrgAbuseName:   Sandoval, Joe 
             OrgAbusePhone:  +1-303-712-3410 
             OrgAbuseEmail:  sandoval.joe.p@broadband.att.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/JS3408-ARIN
             
             RTechHandle: JS3408-ARIN
             RTechName:   Sandoval, Joe 
             RTechPhone:  +1-303-712-3410 
             RTechEmail:  sandoval.joe.p@broadband.att.com
             RTechRef:    https://rdap.arin.net/registry/entity/JS3408-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.
             #