Report for 15271

Name

CENTENE-CORPORATION - Centene 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 AS4637) 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.

15271 FHS-INC-ENT-NET - Foundation Health Systems, Inc

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS209     ASN-QWEST - Qwest
    AS7018    ATT-INTERNET4 - AT&T WorldNet Services

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
7901  AS15271  ORIGIN  Originate:       7936 /19.05  Transit:          0 /0.00  FHS-INC-ENT-NET - Foundation Health Systems, Inc

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       %
 3785 AS15271 FHS-INC-ENT-NET - Foundation Health Syst      9      3      1      7      2  22.22%


  Prefix               AS Path                              Aggregation Suggestion
  198.148.240.0/21     4637 209 15271         
  198.148.249.0/24     4637 3491 3561 7018 15271   
  198.153.172.0/24     4637 209 15271         
  204.107.32.0/21      4637 209 15271       + Announce - aggregate of 204.107.32.0/22 (4637 209 15271) and 204.107.36.0/22 (4637 209 15271)
  204.107.32.0/22      4637 209 15271       - Withdrawn - aggregated with 204.107.36.0/22 (4637 209 15271)
  204.107.36.0/22      4637 209 15271       - Withdrawn - aggregated with 204.107.32.0/22 (4637 209 15271)
  204.107.40.0/22      4637 3491 3561 7018 15271   
  204.107.44.0/22      4637 209 15271         
  204.107.48.0/22      4637 209 15271         
  204.107.48.0/24      4637 209 15271       - Withdrawn - matching aggregate 204.107.48.0/22 4637 209 15271

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

AS15271   8 More Specifics   10 Total Advertisements   FHS-INC-ENT-NET - Foundation Health Systems, Inc
    198.153.172.0/24              198.153.172.0/22
    204.107.32.0/22               204.107.32.0/19
    204.107.36.0/22               204.107.32.0/19
    204.107.40.0/22               204.107.32.0/19
    204.107.44.0/22               204.107.32.0/19
    204.107.46.0/24               204.107.32.0/19
    204.107.48.0/22               204.107.32.0/19
    204.107.48.0/24               204.107.32.0/19

Whois Entry

whois: 402603

IANA has recorded AS15271 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS15271\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:       15271
             ASName:         CENTENE-CORPORATION
             ASHandle:       AS15271
             RegDate:        2000-04-12
             Updated:        2016-10-28
             Ref:            https://rdap.arin.net/registry/autnum/15271
             
             
             OrgName:        Centene Corporation
             OrgId:          CENTE-5
             Address:        7711 Carondelet Avenue, Ste. 800
             City:           St. Louis
             StateProv:      MO
             PostalCode:     63105
             Country:        US
             RegDate:        2003-02-06
             Updated:        2015-03-23
             Ref:            https://rdap.arin.net/registry/entity/CENTE-5
             
             
             OrgAbuseHandle: ABUSE4840-ARIN
             OrgAbuseName:   Abuse
             OrgAbusePhone:  +1-314-505-6920 
             OrgAbuseEmail:  domains@centene.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE4840-ARIN
             
             OrgNOCHandle: ABUSE4840-ARIN
             OrgNOCName:   Abuse
             OrgNOCPhone:  +1-314-505-6920 
             OrgNOCEmail:  domains@centene.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ABUSE4840-ARIN
             
             OrgTechHandle: NETWO7384-ARIN
             OrgTechName:   Network Engineers
             OrgTechPhone:  +1-314-445-0280 
             OrgTechEmail:  IT-Core-Network@Centene.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO7384-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.
             #