Report for 19663

Name

CASS-STL - CASS INFORMATION SYSTEMS, 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.

19663 CASS-STL - CASS INFORMATION SYSTEMS, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS22677         CHARTER-22677-MO-IL-C3 - Charter Communications LLC, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
48477 AS19663        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  CASS-STL - CASS INFORMATION SYSTEMS, 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       %
34807 AS19663       CASS-STL - CASS INFORMATION SYSTEMS, US            2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  12.147.44.0/24       4777 2497 7018 19663   
  192.69.141.0/24      4777 2497 7018 19663   

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

AS19663   1 More Specifics   2 Total Advertisements   CASS-STL - CASS INFORMATION SYSTEMS, US
    12.147.44.0/24                12.0.0.0/8

Whois Entry

whois: 402332

IANA has recorded AS19663 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19663\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:       19663
             ASName:         CASS-STL
             ASHandle:       AS19663
             RegDate:        2001-01-31
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/19663
             
             
             OrgName:        CASS INFORMATION SYSTEMS
             OrgId:          CIS-88
             Address:        13001 HOLLENBERG DR.
             City:           BRIDGETON
             StateProv:      MO
             PostalCode:     63044
             Country:        US
             RegDate:        1999-12-22
             Updated:        2014-12-03
             Ref:            https://rdap.arin.net/registry/entity/CIS-88
             
             
             OrgAbuseHandle: SM1227-ARIN
             OrgAbuseName:   Mullins, Sean 
             OrgAbusePhone:  +1-314-506-5921 
             OrgAbuseEmail:  smullins@cassinfo.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SM1227-ARIN
             
             OrgTechHandle: SM1227-ARIN
             OrgTechName:   Mullins, Sean 
             OrgTechPhone:  +1-314-506-5921 
             OrgTechEmail:  smullins@cassinfo.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SM1227-ARIN
             
             RTechHandle: SM1227-ARIN
             RTechName:   Mullins, Sean 
             RTechPhone:  +1-314-506-5921 
             RTechEmail:  smullins@cassinfo.com
             RTechRef:    https://rdap.arin.net/registry/entity/SM1227-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.
             #