Report for 12185

Name

ASN1 - Thompson, Siegel & Walmsley 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.

12185 ASN1 - Thompson, Siegel & Walmsley LLC, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
44337 AS12185        ORIGIN  Originate:        768 /22.42  Transit:          0 /0.00  ASN1 - Thompson, Siegel & Walmsley 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       %
33145 AS12185       ASN1 - Thompson, Siegel & Walmsley LLC, US         3      0      0      3      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  8.43.93.0/24         4777 2516 3356 12185   
  74.63.155.0/24       4777 2497 3356 12185   
  209.96.132.0/24      4777 2516 3356 12185   

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

AS12185   3 More Specifics   3 Total Advertisements   ASN1 - Thompson, Siegel & Walmsley LLC, US
    8.43.93.0/24                  8.32.0.0/11
    74.63.155.0/24                74.63.128.0/18
    209.96.132.0/24               209.96.128.0/17

Whois Entry

whois: 402332

IANA has recorded AS12185 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12185\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:       12185
             ASName:         ASN1
             ASHandle:       AS12185
             RegDate:        2009-02-03
             Updated:        2025-06-09
             Ref:            https://rdap.arin.net/registry/autnum/12185
             
             
             OrgName:        Thompson, Siegel & Walmsley LLC
             OrgId:          THOMP-32
             Address:        6806 Paragon Place
             Address:        Suite 300
             City:           Richmond
             StateProv:      VA
             PostalCode:     23230
             Country:        US
             RegDate:        2008-11-20
             Updated:        2025-06-09
             Ref:            https://rdap.arin.net/registry/entity/THOMP-32
             
             
             OrgAbuseHandle: TSW44-ARIN
             OrgAbuseName:   TSW
             OrgAbusePhone:  +1-804-353-4500 
             OrgAbuseEmail:  ecayton@tswinvest.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/TSW44-ARIN
             
             OrgTechHandle: TSW44-ARIN
             OrgTechName:   TSW
             OrgTechPhone:  +1-804-353-4500 
             OrgTechEmail:  ecayton@tswinvest.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/TSW44-ARIN
             
             RAbuseHandle: TSW44-ARIN
             RAbuseName:   TSW
             RAbusePhone:  +1-804-353-4500 
             RAbuseEmail:  ecayton@tswinvest.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/TSW44-ARIN
             
             RNOCHandle: TSW44-ARIN
             RNOCName:   TSW
             RNOCPhone:  +1-804-353-4500 
             RNOCEmail:  ecayton@tswinvest.com
             RNOCRef:    https://rdap.arin.net/registry/entity/TSW44-ARIN
             
             RTechHandle: TSW44-ARIN
             RTechName:   TSW
             RTechPhone:  +1-804-353-4500 
             RTechEmail:  ecayton@tswinvest.com
             RTechRef:    https://rdap.arin.net/registry/entity/TSW44-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.
             #