Report for 19398

Name

TENET-HEALTHCARE-ASN-01 - Tenet HealthSystem Medical, Inc., 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.

19398 TENET-HEALTHCARE-ASN-01 - Tenet HealthSystem Medical, Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3257          GTT-BACKBONE GTT, US
    AS20001         TWC-20001-PACWEST - Charter Communications Inc, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
14053 AS19398        ORIGIN  Originate:       5888 /19.48  Transit:          0 /0.00  TENET-HEALTHCARE-ASN-01 - Tenet HealthSystem Medical, Inc., 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       %
20961 AS19398       TENET-HEALTHCARE-ASN-01 - Tenet HealthSystem       9      2      1      8      1  11.11%


  Prefix               AS Path                              Aggregation Suggestion
  155.139.24.0/22      4777 2516 3257 19398   
  155.139.39.0/24      4777 2516 3257 19398   
  155.139.41.0/24      4777 2516 3257 19398   
  155.139.92.0/23      4777 2516 3257 19398   
  155.139.104.0/21     4777 2516 3257 19398 + Announce - aggregate of 155.139.104.0/22 (4777 2516 3257 19398) and 155.139.108.0/22 (4777 2516 3257 19398)
  155.139.104.0/22     4777 2516 3257 19398 - Withdrawn - aggregated with 155.139.108.0/22 (4777 2516 3257 19398)
  155.139.108.0/22     4777 2516 3257 19398 - Withdrawn - aggregated with 155.139.104.0/22 (4777 2516 3257 19398)
  155.139.116.0/23     4777 2516 3257 19398   
  155.139.128.0/24     4777 2516 7843 20001 19398   
  172.85.72.0/22       4777 2516 3257 19398   

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

AS19398   8 More Specifics   9 Total Advertisements   TENET-HEALTHCARE-ASN-01 - Tenet HealthSystem Medical, Inc., US
    155.139.24.0/22               155.139.0.0/16
    155.139.39.0/24               155.139.0.0/16
    155.139.41.0/24               155.139.0.0/16
    155.139.92.0/23               155.139.0.0/16
    155.139.104.0/22              155.139.0.0/16
    155.139.108.0/22              155.139.0.0/16
    155.139.116.0/23              155.139.0.0/16
    155.139.128.0/24              155.139.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS19398 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19398\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:       19398
             ASName:         TENET-HEALTHCARE-ASN-01
             ASHandle:       AS19398
             RegDate:        2023-03-07
             Updated:        2023-03-07
             Ref:            https://rdap.arin.net/registry/autnum/19398
             
             
             OrgName:        Tenet HealthSystem Medical, Inc.
             OrgId:          THM-36
             Address:        14201 Dallas Parkway
             City:           Dallas
             StateProv:      TX
             PostalCode:     75254
             Country:        US
             RegDate:        2022-01-06
             Updated:        2022-04-17
             Ref:            https://rdap.arin.net/registry/entity/THM-36
             
             
             OrgRoutingHandle: DLARI-ARIN
             OrgRoutingName:   DL-ARIN-Registry
             OrgRoutingPhone:  +1-469-893-2823 
             OrgRoutingEmail:  gabriel.long@tenethealth.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/DLARI-ARIN
             
             OrgTechHandle: DLARI-ARIN
             OrgTechName:   DL-ARIN-Registry
             OrgTechPhone:  +1-469-893-2823 
             OrgTechEmail:  gabriel.long@tenethealth.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DLARI-ARIN
             
             OrgNOCHandle: LONGG6-ARIN
             OrgNOCName:   Long, Gabriel 
             OrgNOCPhone:  +1-469-893-2200 
             OrgNOCEmail:  gabriel.long@tenethealth.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/LONGG6-ARIN
             
             OrgNOCHandle: DLARI-ARIN
             OrgNOCName:   DL-ARIN-Registry
             OrgNOCPhone:  +1-469-893-2823 
             OrgNOCEmail:  gabriel.long@tenethealth.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/DLARI-ARIN
             
             OrgRoutingHandle: LONGG6-ARIN
             OrgRoutingName:   Long, Gabriel 
             OrgRoutingPhone:  +1-469-893-2200 
             OrgRoutingEmail:  gabriel.long@tenethealth.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/LONGG6-ARIN
             
             OrgTechHandle: LONGG6-ARIN
             OrgTechName:   Long, Gabriel 
             OrgTechPhone:  +1-469-893-2200 
             OrgTechEmail:  gabriel.long@tenethealth.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/LONGG6-ARIN
             
             OrgDNSHandle: LONGG6-ARIN
             OrgDNSName:   Long, Gabriel 
             OrgDNSPhone:  +1-469-893-2200 
             OrgDNSEmail:  gabriel.long@tenethealth.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/LONGG6-ARIN
             
             OrgAbuseHandle: DLARI-ARIN
             OrgAbuseName:   DL-ARIN-Registry
             OrgAbusePhone:  +1-469-893-2823 
             OrgAbuseEmail:  gabriel.long@tenethealth.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DLARI-ARIN
             
             OrgDNSHandle: DLARI-ARIN
             OrgDNSName:   DL-ARIN-Registry
             OrgDNSPhone:  +1-469-893-2823 
             OrgDNSEmail:  gabriel.long@tenethealth.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/DLARI-ARIN
             
             OrgAbuseHandle: LONGG6-ARIN
             OrgAbuseName:   Long, Gabriel 
             OrgAbusePhone:  +1-469-893-2200 
             OrgAbuseEmail:  gabriel.long@tenethealth.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/LONGG6-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.
             #