Report for 4185

Name

ATTIS-ASN4185 - 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.

4185 ATTIS-ASN4185 - 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
1293  AS4185         ORG+TRN Originate:     199424 /14.39  Transit:     262400 /14.00 ATTIS-ASN4185 - 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       %
20127 AS4185        ATTIS-ASN4185 - AT&T Enterprises, LLC, US         14      1      0     13      1   7.14%


  Prefix               AS Path                              Aggregation Suggestion
  12.14.12.0/24        4777 2497 7018 4185    
  12.14.14.0/24        4777 2497 7018 4185    
  12.150.176.0/24      4777 2497 7018 4185    
  12.150.186.0/24      4777 2497 7018 4185    
  12.183.71.0/24       4777 2497 7018 4185    
  12.185.4.0/24        4777 2497 7018 4185    
  12.185.7.0/24        4777 2497 7018 4185    
  148.184.0.0/16       4777 2497 7018 4185    
  152.75.0.0/16        4777 2497 7018 4185    
  152.75.221.0/24      4777 2497 7018 4185  - Withdrawn - matching aggregate 152.75.0.0/16 4777 2497 7018 4185
  165.110.0.0/16       4777 2497 7018 4185    
  192.104.54.0/24      4777 2497 7018 4185    
  192.133.125.0/24     4777 2497 7018 4185    
  198.137.240.0/24     4777 2497 7018 4185    

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

AS4185   9 More Specifics   14 Total Advertisements   ATTIS-ASN4185 - AT&T Enterprises, LLC, US
    12.14.12.0/24                 12.0.0.0/8
    12.14.14.0/24                 12.0.0.0/8
    12.150.176.0/24               12.0.0.0/8
    12.150.186.0/24               12.0.0.0/8
    12.183.71.0/24                12.0.0.0/8
    12.185.4.0/24                 12.0.0.0/8
    12.185.7.0/24                 12.0.0.0/8
    152.75.221.0/24               152.75.0.0/16
    198.137.240.0/24              198.137.240.0/23

Whois Entry

whois: 402332

IANA has recorded AS4185 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.net -r "AS4185\n             % [whois.apnic.net]
             % Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html
             
             %ERROR:101: no entries found
             %
             % No entries found in source APNIC,JPNIC,KRNIC,TWNIC,IDNIC,IRINN-GRS.
             
             % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)