Report for 6431

Name

ATT-RESEARCH - AT&T Enterprises, 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 AS6447) 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.

6431 ATT-RESEARCH, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
796   AS6431         ORIGIN  Originate:     396800 /13.40  Transit:          0 /0.00  ATT-RESEARCH, 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       %
 5795 AS6431        ATT-RESEARCH, US                                  15      9      1      7      8  53.33%


  Prefix               AS Path                              Aggregation Suggestion
  12.106.32.0/22       7018 6431            + Announce - aggregate of 12.106.32.0/23 (7018 6431) and 12.106.34.0/23 (7018 6431)
  12.106.32.0/23       7018 6431            - Withdrawn - aggregated with 12.106.34.0/23 (7018 6431)
  12.106.34.0/24       7018 6431            - Withdrawn - aggregated with 12.106.35.0/24 (7018 6431)
  12.106.35.0/24       7018 6431            - Withdrawn - aggregated with 12.106.34.0/24 (7018 6431)
  135.197.0.0/16       7018 6431              
  135.197.0.0/17       7018 6431            - Withdrawn - matching aggregate 135.197.0.0/16 7018 6431
  135.197.128.0/17     7018 6431            - Withdrawn - matching aggregate 135.197.0.0/16 7018 6431
  135.205.0.0/16       7018 6431              
  135.205.0.0/17       7018 6431            - Withdrawn - matching aggregate 135.205.0.0/16 7018 6431
  135.205.128.0/17     7018 6431            - Withdrawn - matching aggregate 135.205.0.0/16 7018 6431
  135.207.0.0/16       7018 6431              
  135.207.0.0/17       7018 6431            - Withdrawn - matching aggregate 135.207.0.0/16 7018 6431
  135.207.128.0/17     7018 6431            - Withdrawn - matching aggregate 135.207.0.0/16 7018 6431
  192.20.225.0/24      7018 6431              
  204.178.8.0/21       7018 6431              
  207.76.218.0/24      7018 6431              

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

AS6431   11 More Specifics   13 Total Advertisements   ATT-RESEARCH, US
    12.106.32.0/24                12.0.0.0/8
    12.106.33.0/24                12.0.0.0/8
    12.106.34.0/24                12.0.0.0/8
    12.106.35.0/24                12.0.0.0/8
    135.197.192.0/23              135.197.0.0/16
    135.205.0.0/16                135.200.0.0/13
    135.207.0.0/16                135.200.0.0/13
    204.178.0.0/21                204.176.0.0/14
    204.178.8.0/21                204.176.0.0/14
    207.76.218.0/24               207.76.0.0/14
    207.140.168.0/24              207.140.0.0/15
    12.106.32.0/23                12.0.0.0/8
    135.197.0.0/17                135.197.0.0/16
    135.197.128.0/17              135.197.0.0/16
    135.205.0.0/17                135.200.0.0/13
    135.205.128.0/17              135.200.0.0/13
    135.207.0.0/17                135.200.0.0/13
    135.207.128.0/17              135.200.0.0/13

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 12.106.32.0/24              Announced
    + 12.106.33.0/24              Announced
    + 135.197.192.0/23            Announced
    - 12.106.32.0/23              Withdrawn
    - 135.197.0.0/17              Withdrawn
    - 135.197.128.0/17            Withdrawn
    - 135.205.0.0/17              Withdrawn
    - 135.205.128.0/17            Withdrawn
    - 135.207.0.0/17              Withdrawn
    - 135.207.128.0/17            Withdrawn

Whois Entry

whois: 402609

IANA has recorded AS6431 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS6431\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:       6431
             ASName:         ATT-RESEARCH
             ASHandle:       AS6431
             RegDate:        1996-04-12
             Updated:        2025-03-18
             Ref:            https://rdap.arin.net/registry/autnum/6431
             
             
             
             OrgName:        AT&T Enterprises, LLC
             OrgId:          AEL-360
             Address:        208 S. Akard St.
             City:           Dallas
             StateProv:      TX
             PostalCode:     75202
             Country:        US
             RegDate:        2024-11-22
             Updated:        2026-06-05
             Ref:            https://rdap.arin.net/registry/entity/AEL-360
             
             
             OrgAbuseHandle: ABUSE7-ARIN
             OrgAbuseName:   abuse
             OrgAbusePhone:  +1-919-319-8167 
             OrgAbuseEmail:  abuse@att.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-ARIN
             
             OrgRoutingHandle: ROUTI59-ARIN
             OrgRoutingName:   Routing POC
             OrgRoutingPhone:  +1-999-999-9999 
             OrgRoutingEmail:  routing_poc@att.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/ROUTI59-ARIN
             
             OrgTechHandle: ICC-ARIN
             OrgTechName:   IP Team
             OrgTechPhone:  +1-888-876-2382 
             OrgTechEmail:  rm-ipspecialist@att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ICC-ARIN
             
             OrgTechHandle: ZS44-ARIN
             OrgTechName:   IPAdmin-ATT Internet Services
             OrgTechPhone:  +1-888-510-5545 
             OrgTechEmail:  ipadmin@att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZS44-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.
             #