Report for 11712

Name

BELLSOUTH - AT&T Services, 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 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.

11712 BELLSOUTH - AT&T Services, Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS6389          BELLSOUTH-NET-BLK - AT&T Enterprises, LLC, US
    AS797           AMERITECH-AS - AT&T Services, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
5464  AS11712        ORIGIN  Originate:      30976 /17.08  Transit:          0 /0.00  BELLSOUTH - AT&T Services, Inc., 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       %
20524 AS11712       BELLSOUTH - AT&T Services, Inc., US                6      2      1      5      1  16.67%


  Prefix               AS Path                              Aggregation Suggestion
  72.157.240.0/20      4777 2497 7018 797 11712 + Announce - aggregate of 72.157.240.0/21 (4777 2497 7018 797 11712) and 72.157.248.0/21 (4777 2497 7018 797 11712)
  72.157.240.0/21      4777 2497 7018 797 11712 - Withdrawn - aggregated with 72.157.248.0/21 (4777 2497 7018 797 11712)
  72.157.248.0/21      4777 2497 7018 797 11712 - Withdrawn - aggregated with 72.157.240.0/21 (4777 2497 7018 797 11712)
  139.76.8.0/21        4777 2497 7018 797 11712   
  139.76.53.0/24       4777 2497 7018 6389 11712   
  139.76.64.0/18       4777 2497 7018 797 11712   
  139.76.224.0/19      4777 2497 7018 797 11712   

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

AS11712   6 More Specifics   6 Total Advertisements   BELLSOUTH - AT&T Services, Inc., US
    72.157.240.0/21               72.156.0.0/14
    72.157.248.0/21               72.156.0.0/14
    139.76.8.0/21                 139.76.0.0/16
    139.76.53.0/24                139.76.0.0/16
    139.76.64.0/18                139.76.0.0/16
    139.76.224.0/19               139.76.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS11712 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11712\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:       11712
             ASName:         BELLSOUTH
             ASHandle:       AS11712
             RegDate:        1998-11-23
             Updated:        2013-12-10
             Ref:            https://rdap.arin.net/registry/autnum/11712
             
             
             OrgName:        AT&T Services, Inc.
             OrgId:          ATTSE
             Address:        Enterprise IP Group
             Address:        c/o Ed Williams
             Address:        240 N Meridian Street
             Address:        Room 280
             City:           Indianapolis
             StateProv:      IN
             PostalCode:     46204
             Country:        US
             RegDate:        2008-10-09
             Updated:        2024-11-25
             Comment:        http://www.att.com
             Ref:            https://rdap.arin.net/registry/entity/ATTSE
             
             
             OrgAbuseHandle: ABUSE7-ARIN
             OrgAbuseName:   abuse
             OrgAbusePhone:  +1-919-319-8167 
             OrgAbuseEmail:  abuse@att.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN
             
             OrgTechHandle: WILLI576-ARIN
             OrgTechName:   Williams, Ed 
             OrgTechPhone:  +1-317-265-0000 
             OrgTechEmail:  ew2497@att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WILLI576-ARIN
             
             RAbuseHandle: ABUSE7-ARIN
             RAbuseName:   abuse
             RAbusePhone:  +1-919-319-8167 
             RAbuseEmail:  abuse@att.net
             RAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN
             
             RTechHandle: WILLI576-ARIN
             RTechName:   Williams, Ed 
             RTechPhone:  +1-317-265-0000 
             RTechEmail:  ew2497@att.com
             RTechRef:    https://rdap.arin.net/registry/entity/WILLI576-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.
             #