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 AS6447) 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, US

  Adjacency:     4  Upstream:     3  Downstream:     1
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887, US
    AS7015          COMCAST-7015, US
    AS40127         LMANET, US
  Downstream Adjacent AS list
    AS394784        MEEI-AS, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1336  AS40831        ORG+TRN Originate:     197120 /14.41  Transit:        512 /23.00 PHS, 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       %
42874 AS40831       PHS, US                                            5      0      0      5      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  50.216.106.0/24      6939 7922 7015 40831   
  132.183.0.0/16       11537 1742 40127 40831   
  155.52.0.0/16        11537 1742 40127 40831   
  160.72.231.0/24      7018 1299 46887 40831   
  170.223.0.0/16       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, US
    50.216.106.0/24               50.128.0.0/9
    160.72.231.0/24               160.72.0.0/16

Whois Entry

whois: 402549

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
             
             
             OrgTechHandle: CHENN25-ARIN
             OrgTechName:   Chen, Neal 
             OrgTechPhone:  +1-781-453-1422 
             OrgTechEmail:  ntchen@mgb.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/CHENN25-ARIN
             
             OrgAbuseHandle: MCCAN128-ARIN
             OrgAbuseName:   McCann, Thomas  
             OrgAbusePhone:  +1-857-214-1079 
             OrgAbuseEmail:  tmccann@mgb.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MCCAN128-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.
             #