Report for 19726

Name

HCA-PUBLIC - HCA Information Technology & Services, 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.

19726 HCA-PUBLIC - HCA Information Technology & Services, Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
48497 AS19726        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  HCA-PUBLIC - HCA Information Technology & Services, 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       %
21056 AS19726       HCA-PUBLIC - HCA Information Technology & Ser      2      2      1      1      1  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  170.229.194.0/23     4777 2497 7018 19726 + Announce - aggregate of 170.229.194.0/24 (4777 2497 7018 19726) and 170.229.195.0/24 (4777 2497 7018 19726)
  170.229.194.0/24     4777 2497 7018 19726 - Withdrawn - aggregated with 170.229.195.0/24 (4777 2497 7018 19726)
  170.229.195.0/24     4777 2497 7018 19726 - Withdrawn - aggregated with 170.229.194.0/24 (4777 2497 7018 19726)

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

AS19726   2 More Specifics   2 Total Advertisements   HCA-PUBLIC - HCA Information Technology & Services, Inc., US
    170.229.194.0/24              170.229.0.0/16
    170.229.195.0/24              170.229.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS19726 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19726\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:       19726
             ASName:         HCA-PUBLIC
             ASHandle:       AS19726
             RegDate:        2017-07-20
             Updated:        2017-07-20
             Ref:            https://rdap.arin.net/registry/autnum/19726
             
             
             OrgName:        HCA Information Technology & Services, Inc.
             OrgId:          HITS-2
             Address:        2555 Park Plaza
             City:           Nashville
             StateProv:      TN
             PostalCode:     37203
             Country:        US
             RegDate:        2015-12-07
             Updated:        2015-12-07
             Ref:            https://rdap.arin.net/registry/entity/HITS-2
             
             
             OrgNOCHandle: HITS1-ARIN
             OrgNOCName:   HCA Information Technology and Services
             OrgNOCPhone:  +1-615-344-2772 
             OrgNOCEmail:  CORPDLITOperationsCenter@HCAHealthcare.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/HITS1-ARIN
             
             OrgAbuseHandle: HITS1-ARIN
             OrgAbuseName:   HCA Information Technology and Services
             OrgAbusePhone:  +1-615-344-2772 
             OrgAbuseEmail:  CORPDLITOperationsCenter@HCAHealthcare.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/HITS1-ARIN
             
             OrgTechHandle: HITS1-ARIN
             OrgTechName:   HCA Information Technology and Services
             OrgTechPhone:  +1-615-344-2772 
             OrgTechEmail:  CORPDLITOperationsCenter@HCAHealthcare.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HITS1-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.
             #