Report for 4473

Name

ATTIS-ASN4473 - 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.

4473 ATTIS-ASN4473 - 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
2747  AS4473         ORG+TRN Originate:      78336 /15.74  Transit:     271872 /13.95 ATTIS-ASN4473 - 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       %
 4498 AS4473        ATTIS-ASN4473 - AT&T Enterprises, LLC, US         32     16      5     21     11  34.38%


  Prefix               AS Path                              Aggregation Suggestion
  12.17.241.0/24       4777 2497 7018 4473    
  12.29.116.0/22       4777 2497 7018 4473  + Announce - aggregate of 12.29.116.0/23 (4777 2497 7018 4473) and 12.29.118.0/23 (4777 2497 7018 4473)
  12.29.116.0/24       4777 2497 7018 4473  - Withdrawn - aggregated with 12.29.117.0/24 (4777 2497 7018 4473)
  12.29.117.0/24       4777 2497 7018 4473  - Withdrawn - aggregated with 12.29.116.0/24 (4777 2497 7018 4473)
  12.29.118.0/24       4777 2497 7018 4473  - Withdrawn - aggregated with 12.29.119.0/24 (4777 2497 7018 4473)
  12.29.119.0/24       4777 2497 7018 4473  - Withdrawn - aggregated with 12.29.118.0/24 (4777 2497 7018 4473)
  12.71.77.0/24        4777 2497 7018 4473    
  12.96.45.0/24        4777 2497 7018 4473    
  12.96.46.0/24        4777 2497 7018 4473    
  12.97.148.0/24       4777 2497 7018 4473    
  12.105.210.0/24      4777 2497 7018 4473    
  12.226.120.0/22      4777 2497 7018 4473  + Announce - aggregate of 12.226.120.0/23 (4777 2497 7018 4473) and 12.226.122.0/23 (4777 2497 7018 4473)
  12.226.120.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 12.226.121.0/24 (4777 2497 7018 4473)
  12.226.121.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 12.226.120.0/24 (4777 2497 7018 4473)
  12.226.122.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 12.226.123.0/24 (4777 2497 7018 4473)
  12.226.123.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 12.226.122.0/24 (4777 2497 7018 4473)
  151.107.0.0/20       4777 2497 7018 4473    
  165.13.0.0/16        4777 2497 7018 4473    
  198.183.168.0/24     4777 2497 7018 4473    
  206.197.1.0/24       4777 2497 7018 4473    
  207.140.216.0/23     4777 2497 7018 4473    
  207.140.220.0/22     4777 2497 7018 4473    
  209.37.104.0/22      4777 2497 7018 4473  + Announce - aggregate of 209.37.104.0/23 (4777 2497 7018 4473) and 209.37.106.0/23 (4777 2497 7018 4473)
  209.37.104.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.37.105.0/24 (4777 2497 7018 4473)
  209.37.105.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.37.104.0/24 (4777 2497 7018 4473)
  209.37.106.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.37.107.0/24 (4777 2497 7018 4473)
  209.37.107.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.37.106.0/24 (4777 2497 7018 4473)
  209.37.109.0/24      4777 2497 7018 4473    
  209.37.110.0/24      4777 2497 7018 4473    
  209.65.8.0/23        4777 2497 7018 4473  + Announce - aggregate of 209.65.8.0/24 (4777 2497 7018 4473) and 209.65.9.0/24 (4777 2497 7018 4473)
  209.65.8.0/24        4777 2497 7018 4473  - Withdrawn - aggregated with 209.65.9.0/24 (4777 2497 7018 4473)
  209.65.9.0/24        4777 2497 7018 4473  - Withdrawn - aggregated with 209.65.8.0/24 (4777 2497 7018 4473)
  209.65.160.0/23      4777 2497 7018 4473  + Announce - aggregate of 209.65.160.0/24 (4777 2497 7018 4473) and 209.65.161.0/24 (4777 2497 7018 4473)
  209.65.160.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.65.161.0/24 (4777 2497 7018 4473)
  209.65.161.0/24      4777 2497 7018 4473  - Withdrawn - aggregated with 209.65.160.0/24 (4777 2497 7018 4473)
  209.65.163.0/24      4777 2497 7018 4473    
  209.65.164.0/24      4777 2497 7018 4473    

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

AS4473   29 More Specifics   32 Total Advertisements   ATTIS-ASN4473 - AT&T Enterprises, LLC, US
    12.17.241.0/24                12.0.0.0/8
    12.29.116.0/24                12.0.0.0/8
    12.29.117.0/24                12.0.0.0/8
    12.29.118.0/24                12.0.0.0/8
    12.29.119.0/24                12.0.0.0/8
    12.71.77.0/24                 12.0.0.0/8
    12.96.45.0/24                 12.0.0.0/8
    12.96.46.0/24                 12.0.0.0/8
    12.97.148.0/24                12.0.0.0/8
    12.105.210.0/24               12.0.0.0/8
    12.226.120.0/24               12.0.0.0/8
    12.226.121.0/24               12.0.0.0/8
    12.226.122.0/24               12.0.0.0/8
    12.226.123.0/24               12.0.0.0/8
    151.107.0.0/20                151.107.0.0/16
    207.140.216.0/23              207.140.0.0/15
    207.140.220.0/22              207.140.0.0/15
    209.37.104.0/24               209.36.0.0/15
    209.37.105.0/24               209.36.0.0/15
    209.37.106.0/24               209.36.0.0/15
    209.37.107.0/24               209.36.0.0/15
    209.37.109.0/24               209.36.0.0/15
    209.37.110.0/24               209.36.0.0/15
    209.65.8.0/24                 209.64.0.0/15
    209.65.9.0/24                 209.64.0.0/15
    209.65.160.0/24               209.64.0.0/15
    209.65.161.0/24               209.64.0.0/15
    209.65.163.0/24               209.64.0.0/15
    209.65.164.0/24               209.64.0.0/15

Whois Entry

whois: 402603

IANA has recorded AS4473 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS4473\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:       4473
             ASName:         ATTIS-ASN4473
             ASHandle:       AS4473
             RegDate:        1995-03-08
             Updated:        2024-12-05
             Ref:            https://rdap.arin.net/registry/autnum/4473
             
             
             
             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@semail.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.
             #