Report for 19574

Name

CSC - Corporation Service Company, 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.

19574 CSC - Corporation Service Company, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS701           UUNET - Verizon Business, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
19013 AS19574        ORIGIN  Originate:       3328 /20.30  Transit:          0 /0.00  CSC - Corporation Service Company, 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       %
15664 AS19574       CSC - Corporation Service Company, US              6      4      2      4      2  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  165.160.12.0/23      4777 2516 701 19574  + Announce - aggregate of 165.160.12.0/24 (4777 2516 701 19574) and 165.160.13.0/24 (4777 2516 701 19574)
  165.160.12.0/24      4777 2516 701 19574  - Withdrawn - aggregated with 165.160.13.0/24 (4777 2516 701 19574)
  165.160.13.0/24      4777 2516 701 19574  - Withdrawn - aggregated with 165.160.12.0/24 (4777 2516 701 19574)
  165.160.14.0/23      4777 2497 3356 19574 + Announce - aggregate of 165.160.14.0/24 (4777 2497 3356 19574) and 165.160.15.0/24 (4777 2497 3356 19574)
  165.160.14.0/24      4777 2497 3356 19574 - Withdrawn - aggregated with 165.160.15.0/24 (4777 2497 3356 19574)
  165.160.15.0/24      4777 2497 3356 19574 - Withdrawn - aggregated with 165.160.14.0/24 (4777 2497 3356 19574)
  165.160.16.0/24      4777 2516 701 19574    
  165.160.32.0/21      4777 2497 701 19574    

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

AS19574   6 More Specifics   6 Total Advertisements   CSC - Corporation Service Company, US
    165.160.12.0/24               165.160.0.0/16
    165.160.13.0/24               165.160.0.0/16
    165.160.14.0/24               165.160.0.0/16
    165.160.15.0/24               165.160.0.0/16
    165.160.16.0/24               165.160.0.0/16
    165.160.32.0/21               165.160.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS19574 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19574\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:       19574
             ASName:         CSC
             ASHandle:       AS19574
             RegDate:        2007-12-21
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/19574
             
             
             OrgName:        Corporation Service Company
             OrgId:          CORPO-9
             Address:        251 Little Falls Drive
             City:           Wilmington
             StateProv:      DE
             PostalCode:     19808
             Country:        US
             RegDate:        2004-03-09
             Updated:        2024-10-31
             Ref:            https://rdap.arin.net/registry/entity/CORPO-9
             
             
             OrgTechHandle: ARINT19-ARIN
             OrgTechName:   ArinTech
             OrgTechPhone:  +1-302-636-5400 
             OrgTechEmail:  arintech@cscinfo.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ARINT19-ARIN
             
             OrgAbuseHandle: DOMAI486-ARIN
             OrgAbuseName:   Domain Abuse
             OrgAbusePhone:  +1-302-636-5400 
             OrgAbuseEmail:  domainabuse@cscglobal.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI486-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.
             #