Report for 396151

Name

STEWARDHEALTHCARE - Steward Health Care System LLC, 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.

396151 STEWARDHEALTHCARE - Steward Health Care System LLC, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887 - Crown Castle Fiber LLC, US
    AS17378         AS17378 - TierPoint, LLC, US
    AS7015          COMCAST-7015 - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15648 AS396151       ORIGIN  Originate:       4864 /19.75  Transit:          0 /0.00  STEWARDHEALTHCARE - Steward Health Care System LLC, 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       %
11693 AS396151      STEWARDHEALTHCARE - Steward Health Care Syste     18      8      4     14      4  22.22%


  Prefix               AS Path                              Aggregation Suggestion
  198.89.64.0/24       4777 2516 7922 7015 396151   
  198.89.65.0/24       4608 7575 1299 46887 396151   
  198.89.66.0/23       4777 2516 7922 7015 396151 + Announce - aggregate of 198.89.66.0/24 (4777 2516 7922 7015 396151) and 198.89.67.0/24 (4777 2516 7922 7015 396151)
  198.89.66.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.67.0/24 (4777 2516 7922 7015 396151)
  198.89.67.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.66.0/24 (4777 2516 7922 7015 396151)
  198.89.68.0/23       4608 7575 1299 46887 396151 + Announce - aggregate of 198.89.68.0/24 (4608 7575 1299 46887 396151) and 198.89.69.0/24 (4608 7575 1299 46887 396151)
  198.89.68.0/24       4608 7575 1299 46887 396151 - Withdrawn - aggregated with 198.89.69.0/24 (4608 7575 1299 46887 396151)
  198.89.69.0/24       4608 7575 1299 46887 396151 - Withdrawn - aggregated with 198.89.68.0/24 (4608 7575 1299 46887 396151)
  198.89.70.0/24       4608 7575 1299 46887 396151   
  198.89.71.0/24       4777 2516 7922 7015 396151   
  198.89.72.0/24       4777 2516 7922 7015 396151   
  198.89.73.0/24       4608 7575 1299 46887 396151   
  198.89.74.0/23       4777 2516 7922 7015 396151 + Announce - aggregate of 198.89.74.0/24 (4777 2516 7922 7015 396151) and 198.89.75.0/24 (4777 2516 7922 7015 396151)
  198.89.74.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.75.0/24 (4777 2516 7922 7015 396151)
  198.89.75.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.74.0/24 (4777 2516 7922 7015 396151)
  198.89.77.0/24       4777 2516 7922 7015 396151   
  198.89.78.0/23       4777 2516 7922 7015 396151 + Announce - aggregate of 198.89.78.0/24 (4777 2516 7922 7015 396151) and 198.89.79.0/24 (4777 2516 7922 7015 396151)
  198.89.78.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.79.0/24 (4777 2516 7922 7015 396151)
  198.89.79.0/24       4777 2516 7922 7015 396151 - Withdrawn - aggregated with 198.89.78.0/24 (4777 2516 7922 7015 396151)
  198.89.83.0/24       4777 2516 7922 7015 396151   
  198.212.151.0/24     4777 2516 3257 17378 396151   
  204.58.2.0/23        4777 2516 3257 17378 396151   

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

AS396151   15 More Specifics   18 Total Advertisements   STEWARDHEALTHCARE - Steward Health Care System LLC, US
    198.89.64.0/24                198.89.64.0/21
    198.89.65.0/24                198.89.64.0/21
    198.89.66.0/24                198.89.64.0/21
    198.89.67.0/24                198.89.64.0/21
    198.89.68.0/24                198.89.64.0/21
    198.89.69.0/24                198.89.64.0/21
    198.89.70.0/24                198.89.64.0/21
    198.89.71.0/24                198.89.64.0/21
    198.89.72.0/24                198.89.72.0/22
    198.89.73.0/24                198.89.72.0/22
    198.89.74.0/24                198.89.72.0/22
    198.89.75.0/24                198.89.72.0/22
    198.89.77.0/24                198.89.76.0/23
    198.89.83.0/24                198.89.80.0/22
    204.58.2.0/23                 204.58.0.0/21

Whois Entry

whois: 402591

IANA has recorded AS396151 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS396151\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:       396151
             ASName:         STEWARDHEALTHCARE
             ASHandle:       AS396151
             RegDate:        2017-03-21
             Updated:        2024-05-30
             Ref:            https://rdap.arin.net/registry/autnum/396151
             
             
             OrgName:        Steward Health Care System LLC
             OrgId:          SHCSL
             Address:        2120 Dorchester Ave
             City:           Dorchester
             StateProv:      MA
             PostalCode:     02124
             Country:        US
             RegDate:        2015-01-05
             Updated:        2024-08-05
             Ref:            https://rdap.arin.net/registry/entity/SHCSL
             
             
             OrgTechHandle: ROSSI127-ARIN
             OrgTechName:   Rossi, Brandon 
             OrgTechPhone:  +1-304-602-7030 
             OrgTechEmail:  brossi@qhcus.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ROSSI127-ARIN
             
             OrgAbuseHandle: ROSSI127-ARIN
             OrgAbuseName:   Rossi, Brandon 
             OrgAbusePhone:  +1-304-602-7030 
             OrgAbuseEmail:  brossi@qhcus.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ROSSI127-ARIN
             
             OrgAbuseHandle: THOMP1256-ARIN
             OrgAbuseName:   Thompson, Micheal 
             OrgAbusePhone:  +1-617-845-3652 
             OrgAbuseEmail:  trex10@steward.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/THOMP1256-ARIN
             
             OrgAbuseHandle: NORDO4-ARIN
             OrgAbuseName:   Nordone, Joseph 
             OrgAbusePhone:  +1-617-690-6804 
             OrgAbuseEmail:  joenordone@aol.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NORDO4-ARIN
             
             OrgTechHandle: NORDO6-ARIN
             OrgTechName:   Nordone, Joe 
             OrgTechPhone:  +1-617-690-6804 
             OrgTechEmail:  joseph.nordone@steward.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/NORDO6-ARIN
             
             OrgTechHandle: THOMP1256-ARIN
             OrgTechName:   Thompson, Micheal 
             OrgTechPhone:  +1-617-845-3652 
             OrgTechEmail:  trex10@steward.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/THOMP1256-ARIN
             
             OrgTechHandle: NORDO4-ARIN
             OrgTechName:   Nordone, Joseph 
             OrgTechPhone:  +1-617-690-6804 
             OrgTechEmail:  joenordone@aol.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NORDO4-ARIN
             
             OrgAbuseHandle: NORDO6-ARIN
             OrgAbuseName:   Nordone, Joe 
             OrgAbusePhone:  +1-617-690-6804 
             OrgAbuseEmail:  joseph.nordone@steward.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NORDO6-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.
             #