Report for 797

Name

AMERITECH-AS - 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.

797 AMERITECH-AS - AT&T Services, Inc., US

  Adjacency:     2  Upstream:     1  Downstream:     1
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
  Downstream Adjacent AS list
    AS11712         BELLSOUTH - AT&T Services, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1451  AS797          ORG+TRN Originate:     171264 /14.61  Transit:      30720 /17.09 AMERITECH-AS - 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       %
15287 AS797         AMERITECH-AS - AT&T Services, Inc., US            21      4      2     19      2   9.52%


  Prefix               AS Path                              Aggregation Suggestion
  12.153.241.0/24      4777 2497 7018 797     
  67.98.173.0/24       4777 2497 7018 797     
  135.209.64.0/18      4777 2497 7018 797   + Announce - aggregate of 135.209.64.0/19 (4777 2497 7018 797) and 135.209.96.0/19 (4777 2497 7018 797)
  135.209.64.0/19      4777 2497 7018 797   - Withdrawn - aggregated with 135.209.96.0/19 (4777 2497 7018 797)
  135.209.96.0/19      4777 2497 7018 797   - Withdrawn - aggregated with 135.209.64.0/19 (4777 2497 7018 797)
  135.209.146.0/23     4777 2497 7018 797     
  135.209.148.0/22     4777 2497 7018 797     
  135.209.152.0/22     4777 2497 7018 797     
  135.209.156.0/24     4777 2497 7018 797     
  135.209.158.0/23     4777 2497 7018 797     
  135.209.160.0/21     4777 2497 7018 797     
  135.209.168.0/24     4777 2497 7018 797     
  135.209.208.0/20     4777 2497 7018 797     
  135.209.208.0/23     4777 2497 7018 797 797 797 797 797 797 + Announce - aggregate of 135.209.208.0/24 (4777 2497 7018 797 797 797 797 797 797) and 135.209.209.0/24 (4777 2497 7018 797 797 797 797 797 797)
  135.209.208.0/24     4777 2497 7018 797 797 797 797 797 797 - Withdrawn - aggregated with 135.209.209.0/24 (4777 2497 7018 797 797 797 797 797 797)
  135.209.209.0/24     4777 2497 7018 797 797 797 797 797 797 - Withdrawn - aggregated with 135.209.208.0/24 (4777 2497 7018 797 797 797 797 797 797)
  135.209.224.0/20     4777 2497 7018 797     
  144.160.0.0/15       4777 2497 7018 797     
  170.35.208.0/20      4777 2497 7018 797     
  170.35.224.0/20      4777 2497 7018 797     
  192.150.169.0/24     4777 2497 7018 797     
  198.180.219.0/24     4777 2497 7018 797     
  204.107.19.0/24      4777 2497 7018 797     

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

AS797   18 More Specifics   21 Total Advertisements   AMERITECH-AS - AT&T Services, Inc., US
    12.153.241.0/24               12.0.0.0/8
    67.98.173.0/24                67.96.0.0/14
    135.209.64.0/19               135.209.0.0/16
    135.209.96.0/19               135.209.0.0/16
    135.209.146.0/23              135.209.0.0/16
    135.209.148.0/22              135.209.0.0/16
    135.209.152.0/22              135.209.0.0/16
    135.209.156.0/24              135.209.0.0/16
    135.209.158.0/23              135.209.0.0/16
    135.209.160.0/21              135.209.0.0/16
    135.209.168.0/24              135.209.0.0/16
    135.209.208.0/20              135.209.0.0/16
    135.209.208.0/24              135.209.0.0/16
    135.209.209.0/24              135.209.0.0/16
    135.209.224.0/20              135.209.0.0/16
    170.35.208.0/20               170.35.0.0/16
    170.35.224.0/20               170.35.0.0/16
    204.107.19.0/24               204.107.16.0/21

Whois Entry

whois: 402591

IANA has recorded AS797 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS797\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:       795 - 797
             ASName:         AMERITECH-AS
             ASHandle:       AS795
             RegDate:        1990-12-13
             Updated:        2012-04-02
             Ref:            https://rdap.arin.net/registry/autnum/795
             
             
             OrgName:        AT&T Services, Inc.
             OrgId:          ATTSE-Z
             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:        2009-01-30
             Updated:        2024-07-30
             Comment:        http://www.att.com
             Ref:            https://rdap.arin.net/registry/entity/ATTSE-Z
             
             
             OrgTechHandle: WILLI576-ARIN
             OrgTechName:   Williams, Ed 
             OrgTechPhone:  +1-317-265-0000 
             OrgTechEmail:  ew2497@att.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WILLI576-ARIN
             
             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
             
             
             #
             # 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.
             #