Report for 40831

Name

PHS - Mass General Brigham Incorporated, 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.

40831 PHS - Mass General Brigham Incorporated, US

  Adjacency:     4  Upstream:     3  Downstream:     1
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887 - Crown Castle Fiber LLC, US
    AS40127         LMANET - Longwood Medical and Academic Area (LMA), US
    AS7015          COMCAST-7015 - Comcast Cable Communications, LLC, US
  Downstream Adjacent AS list
    AS394784        MEEI-AS - Massachusetts Eye and Ear Infirmary, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1323  AS40831        ORG+TRN Originate:     197120 /14.41  Transit:        512 /23.00 PHS - Mass General Brigham Incorporated, 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       %
42412 AS40831       PHS - Mass General Brigham Incorporated, US        5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  50.216.106.0/24      4777 2516 7922 7015 40831   
  132.183.0.0/16       4608 7575 11537 1742 40127 40831   
  155.52.0.0/16        4608 7575 11537 1742 40127 40831   
  160.72.231.0/24      4777 2516 1299 46887 40831   
  170.223.0.0/16       4608 7575 11537 1742 40127 40831   

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

AS40831   2 More Specifics   5 Total Advertisements   PHS - Mass General Brigham Incorporated, US
    50.216.106.0/24               50.128.0.0/9
    160.72.231.0/24               160.72.0.0/16

Whois Entry

whois: 402599

IANA has recorded AS40831 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS40831\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:       40831
             ASName:         PHS
             ASHandle:       AS40831
             RegDate:        2017-07-25
             Updated:        2017-07-25
             Ref:            https://rdap.arin.net/registry/autnum/40831
             
             
             OrgName:        Mass General Brigham Incorporated
             OrgId:          PHS-8
             Address:        Brigham & Womens Hospital Information Systems 10 Vining Street
             City:           Boston
             StateProv:      MA
             PostalCode:     02115
             Country:        US
             RegDate:        1995-07-14
             Updated:        2026-05-26
             Ref:            https://rdap.arin.net/registry/entity/PHS-8
             
             
             OrgAbuseHandle: MCCAN128-ARIN
             OrgAbuseName:   McCann, Thomas  
             OrgAbusePhone:  +1-857-214-1079 
             OrgAbuseEmail:  tmccann@mgb.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MCCAN128-ARIN
             
             OrgTechHandle: CHENN25-ARIN
             OrgTechName:   Chen, Neal 
             OrgTechPhone:  +1-781-453-1422 
             OrgTechEmail:  ntchen@mgb.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/CHENN25-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.
             #