Report for 397151

Name

DC2-AS - Trans Union, 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.

397151 DC2-AS - Trans Union, LLC, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS13335         CLOUDFLARENET - Cloudflare, Inc., US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
24069 AS397151       ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  DC2-AS - Trans Union, 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       %
75393 AS397151      DC2-AS - Trans Union, LLC, US                      5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  66.175.248.0/22      4777 2516 3356 397151 397151 397151   
  66.175.248.0/23      4777 13335 397151      
  66.175.250.0/24      4777 13335 397151      
  198.47.91.0/24       4777 13335 397151      
  207.201.214.0/24     4777 13335 397151      

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

AS397151   5 More Specifics   5 Total Advertisements   DC2-AS - Trans Union, LLC, US
    66.175.248.0/22               66.175.240.0/20
    66.175.248.0/23               66.175.240.0/20
    66.175.250.0/24               66.175.240.0/20
    198.47.91.0/24                198.47.90.0/23
    207.201.214.0/24              207.201.192.0/18

Whois Entry

whois: 402332

IANA has recorded AS397151 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS397151\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:       397151
             ASName:         DC2-AS
             ASHandle:       AS397151
             RegDate:        2018-11-09
             Updated:        2018-11-09
             Ref:            https://rdap.arin.net/registry/autnum/397151
             
             
             OrgName:        Trans Union, LLC
             OrgId:          TUL-7
             Address:        555 W. Adams
             City:           Chicago
             StateProv:      IL
             PostalCode:     60661
             Country:        US
             RegDate:        2007-06-06
             Updated:        2026-03-11
             Ref:            https://rdap.arin.net/registry/entity/TUL-7
             
             
             OrgAbuseHandle: NETWO10022-ARIN
             OrgAbuseName:   Network Operations
             OrgAbusePhone:  +1-312-985-4362 
             OrgAbuseEmail:  PDLNETWORKOPS@transunion.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO10022-ARIN
             
             OrgTechHandle: PLATT78-ARIN
             OrgTechName:   Platt, Daniel 
             OrgTechPhone:  +1-833-806-1627 
             OrgTechEmail:  daniel.platt@transunion.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/PLATT78-ARIN
             
             OrgTechHandle: CALDE247-ARIN
             OrgTechName:   Calderon, Andrey 
             OrgTechPhone:  +1-888-888-8888 
             OrgTechEmail:  andrey.calderon@transunion.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/CALDE247-ARIN
             
             OrgTechHandle: TIQ-ARIN
             OrgTechName:   Iqbal, Tariq 
             OrgTechPhone:  +1-773-858-8166 
             OrgTechEmail:  tiqbal@transunion.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/TIQ-ARIN
             
             OrgAbuseHandle: GOC10-ARIN
             OrgAbuseName:   GOC
             OrgAbusePhone:  +1-312-985-4362 
             OrgAbuseEmail:  GOC@transunion.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/GOC10-ARIN
             
             OrgTechHandle: NETWO10022-ARIN
             OrgTechName:   Network Operations
             OrgTechPhone:  +1-312-985-4362 
             OrgTechEmail:  PDLNETWORKOPS@transunion.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO10022-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.
             #