Report for 25984

Name

MEDSTARHEALTH - MedStar Health, 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.

25984 MEDSTARHEALTH - MedStar Health, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS15830         EQUINIX, NL
    AS701           UUNET - Verizon Business, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
23160 AS25984        ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  MEDSTARHEALTH - MedStar Health, 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       %
37036 AS25984       MEDSTARHEALTH - MedStar Health, US                 8      0      0      8      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  198.50.64.0/24       4777 2497 701 25984    
  198.50.73.0/24       4777 2497 701 25984    
  198.50.74.0/24       4777 2497 701 25984    
  198.50.94.0/24       4777 2516 701 25984    
  198.99.32.0/24       4777 2516 701 25984    
  198.99.40.0/24       4777 2516 701 25984    
  198.99.54.0/23       4777 2516 3257 15830 25984   
  198.133.139.0/24     4777 2497 701 25984    

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

AS25984   7 More Specifics   8 Total Advertisements   MEDSTARHEALTH - MedStar Health, US
    198.50.64.0/24                198.50.64.0/19
    198.50.73.0/24                198.50.64.0/19
    198.50.74.0/24                198.50.64.0/19
    198.50.94.0/24                198.50.64.0/19
    198.99.32.0/24                198.99.32.0/19
    198.99.40.0/24                198.99.32.0/19
    198.99.54.0/23                198.99.32.0/19

Whois Entry

whois: 402332

IANA has recorded AS25984 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS25984\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:       25984
             ASName:         MEDSTARHEALTH
             ASHandle:       AS25984
             RegDate:        2002-06-12
             Updated:        2012-03-20
             Ref:            https://rdap.arin.net/registry/autnum/25984
             
             
             OrgName:        MedStar Health
             OrgId:          MEDSTA-4
             Address:        2331 Broadbirch Drive
             City:           Silver Spring
             StateProv:      MD
             PostalCode:     20904
             Country:        US
             RegDate:        2002-06-12
             Updated:        2025-07-22
             Ref:            https://rdap.arin.net/registry/entity/MEDSTA-4
             
             
             OrgTechHandle: ADMIN9072-ARIN
             OrgTechName:   admin
             OrgTechPhone:  +1-410-772-6500 
             OrgTechEmail:  steven.steiner@medstar.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/ADMIN9072-ARIN
             
             OrgAbuseHandle: JJA63-ARIN
             OrgAbuseName:   Jakobowski, Jeff 
             OrgAbusePhone:  +1-301-680-7737 
             OrgAbuseEmail:  jaj4@medstar.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/JJA63-ARIN
             
             OrgTechHandle: JJA63-ARIN
             OrgTechName:   Jakobowski, Jeff 
             OrgTechPhone:  +1-301-680-7737 
             OrgTechEmail:  jaj4@medstar.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/JJA63-ARIN
             
             RTechHandle: JK1698-ARIN
             RTechName:   Kuhar, Jim 
             RTechPhone:  +1-301-680-7743 
             RTechEmail:  Jim.L.Kuhar@medstar.net
             RTechRef:    https://rdap.arin.net/registry/entity/JK1698-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.
             #