Report for 4583

Name

THOMSON-REUTERS - West Publishing Corporation, 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.

4583 THOMSON-REUTERS - West Publishing Corporation, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS2686          ATGS-MMD-AS - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
14527 AS4583         ORIGIN  Originate:       5376 /19.61  Transit:          0 /0.00  THOMSON-REUTERS - West Publishing Corporation, 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       %
20200 AS4583        THOMSON-REUTERS - West Publishing Corporation      7      2      1      6      1  14.29%


  Prefix               AS Path                              Aggregation Suggestion
  155.46.136.0/22      4777 2497 7018 4583 4583 4583 4583 4583 4583 4583 4583   
  155.46.144.0/22      4608 7575 3356 2686 4583 4583 4583 4583 4583 4583 4583 4583   
  155.46.152.0/23      4777 2497 7018 4583 4583 4583 4583 4583 4583 4583 4583   
  155.46.156.0/23      4608 7575 3356 2686 4583 4583 4583 4583 4583 4583 4583 4583   
  155.46.165.0/24      4777 2497 3356 4583    
  155.46.168.0/21      4777 2516 3356 4583  + Announce - aggregate of 155.46.168.0/22 (4777 2516 3356 4583) and 155.46.172.0/22 (4777 2516 3356 4583)
  155.46.168.0/22      4777 2516 3356 4583  - Withdrawn - aggregated with 155.46.172.0/22 (4777 2516 3356 4583)
  155.46.172.0/22      4777 2516 3356 4583  - Withdrawn - aggregated with 155.46.168.0/22 (4777 2516 3356 4583)

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

AS4583   7 More Specifics   7 Total Advertisements   THOMSON-REUTERS - West Publishing Corporation, US
    155.46.136.0/22               155.46.128.0/17
    155.46.144.0/22               155.46.128.0/17
    155.46.152.0/23               155.46.128.0/17
    155.46.156.0/23               155.46.128.0/17
    155.46.165.0/24               155.46.128.0/17
    155.46.168.0/22               155.46.128.0/17
    155.46.172.0/22               155.46.128.0/17

Whois Entry

whois: 402591

IANA has recorded AS4583 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS4583\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:       4583
             ASName:         THOMSON-REUTERS
             ASHandle:       AS4583
             RegDate:        1995-05-01
             Updated:        2021-10-04
             Ref:            https://rdap.arin.net/registry/autnum/4583
             
             
             OrgName:        West Publishing Corporation
             OrgId:          WPC-15
             Address:        610 Opperman Drive
             City:           Eagan
             StateProv:      MN
             PostalCode:     55123
             Country:        US
             RegDate:        1992-08-25
             Updated:        2014-12-03
             Ref:            https://rdap.arin.net/registry/entity/WPC-15
             
             
             OrgTechHandle: TRIPT-ARIN
             OrgTechName:   TR-IP-TECH
             OrgTechPhone:  +1-651-687-7000 
             OrgTechEmail:  TR.IP-TECH@thomsonreuters.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/TRIPT-ARIN
             
             OrgAbuseHandle: TRIPA1-ARIN
             OrgAbuseName:   TR-IP-Abuse
             OrgAbusePhone:  +1-651-687-7000 
             OrgAbuseEmail:  TR.IP-ABUSE@thomsonreuters.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/TRIPA1-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.
             #