Report for 3423

Name

ATTIS-ASN3423 - 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 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.

3423 ATTIS-ASN3423 - AT&T Enterprises, LLC, US

  Adjacency:     2  Upstream:     1  Downstream:     1
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
  Downstream Adjacent AS list
    AS13979         ATT-IPFR - AT&T Enterprises, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
18941 AS3423         ORG+TRN Originate:       3328 /20.30  Transit:       1536 /21.42 ATTIS-ASN3423 - AT&T Enterprises, 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       %
15179 AS3423        ATTIS-ASN3423 - AT&T Enterprises, LLC, US         11      4      2      9      2  18.18%


  Prefix               AS Path                              Aggregation Suggestion
  12.96.43.0/24        4777 2497 7018 3423    
  12.96.44.0/24        4777 2497 7018 3423    
  157.96.84.0/23       4777 2497 7018 3423  + Announce - aggregate of 157.96.84.0/24 (4777 2497 7018 3423) and 157.96.85.0/24 (4777 2497 7018 3423)
  157.96.84.0/24       4777 2497 7018 3423  - Withdrawn - aggregated with 157.96.85.0/24 (4777 2497 7018 3423)
  157.96.85.0/24       4777 2497 7018 3423  - Withdrawn - aggregated with 157.96.84.0/24 (4777 2497 7018 3423)
  157.96.86.0/24       4777 2497 7018 3423    
  165.224.128.0/22     4777 2497 7018 3423  + Announce - aggregate of 165.224.128.0/23 (4777 2497 7018 3423) and 165.224.130.0/23 (4777 2497 7018 3423)
  165.224.128.0/23     4777 2497 7018 3423  - Withdrawn - aggregated with 165.224.130.0/23 (4777 2497 7018 3423)
  165.224.130.0/23     4777 2497 7018 3423  - Withdrawn - aggregated with 165.224.128.0/23 (4777 2497 7018 3423)
  165.224.132.0/24     4777 2497 7018 3423    
  165.224.134.0/24     4777 2497 7018 3423    
  165.224.136.0/24     4777 2497 7018 3423    
  165.224.140.0/24     4777 2497 7018 3423    

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

AS3423   11 More Specifics   11 Total Advertisements   ATTIS-ASN3423 - AT&T Enterprises, LLC, US
    12.96.43.0/24                 12.0.0.0/8
    12.96.44.0/24                 12.0.0.0/8
    157.96.84.0/24                157.96.84.0/22
    157.96.85.0/24                157.96.84.0/22
    157.96.86.0/24                157.96.84.0/22
    165.224.128.0/23              165.224.0.0/16
    165.224.130.0/23              165.224.0.0/16
    165.224.132.0/24              165.224.0.0/16
    165.224.134.0/24              165.224.0.0/16
    165.224.136.0/24              165.224.0.0/16
    165.224.140.0/24              165.224.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS3423 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3423\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:       3423
             ASName:         ATTIS-ASN3423
             ASHandle:       AS3423
             RegDate:        1994-02-17
             Updated:        2024-12-05
             Ref:            https://rdap.arin.net/registry/autnum/3423
             
             
             
             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:        2025-10-29
             Ref:            https://rdap.arin.net/registry/entity/AEL-360
             
             
             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: ZS44-ARIN
             OrgTechName:   IPAdmin-ATT Internet Services
             OrgTechPhone:  +1-888-510-5545 
             OrgTechEmail:  ipadmin@semail.att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZS44-ARIN
             
             OrgAbuseHandle: ABUSE7-ARIN
             OrgAbuseName:   abuse
             OrgAbusePhone:  +1-919-319-8167 
             OrgAbuseEmail:  abuse@att.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7-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
             
             
             #
             # 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.
             #