Report for 20252

Name

JSIWMC - Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University, 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.

20252 JSIWMC, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS12271         TWC-12271-NYC, US
    AS46887         CROWNCASTLE-AS46887, US
    AS174           COGENT-174, US
    AS3754          NYSERNET3-AS, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2360  AS20252        ORIGIN  Originate:      98816 /15.41  Transit:          0 /0.00  JSIWMC, 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       %
35629 AS20252       JSIWMC, US                                         4      0      0      4      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  38.146.193.0/24      7018 174 20252         
  140.251.0.0/17       2914 174 20252         
  157.139.0.0/16       2914 174 20252         
  207.162.253.0/24     6939 3356 46887 20252   

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

AS20252   1 More Specifics   2 Total Advertisements   JSIWMC, US
    140.251.0.0/17                140.251.0.0/16
    207.162.253.0/24              207.162.240.0/20

Prefixes added and withdrawn by this origin AS in the past 7 days.

    - 207.162.253.0/24            Withdrawn

Whois Entry

whois: 402590

IANA has recorded AS20252 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS20252\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:       20252
             ASName:         JSIWMC
             ASHandle:       AS20252
             RegDate:        2001-04-12
             Updated:        2012-02-24
             Ref:            https://rdap.arin.net/registry/autnum/20252
             
             
             OrgName:        Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University
             OrgId:          JOANAN
             Address:        1300 York Avenue
             City:           New York
             StateProv:      NY
             PostalCode:     10065
             Country:        US
             RegDate:        2000-06-07
             Updated:        2013-07-31
             Ref:            https://rdap.arin.net/registry/entity/JOANAN
             
             
             OrgAbuseHandle: ISAR-ARIN
             OrgAbuseName:   Information Security Abuse Response
             OrgAbusePhone:  +1-212-746-4878 
             OrgAbuseEmail:  abuse@med.cornell.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ISAR-ARIN
             
             OrgTechHandle: NOC216-ARIN
             OrgTechName:   Network Operations Center
             OrgTechPhone:  +1-212-746-4878 
             OrgTechEmail:  noc@med.cornell.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/NOC216-ARIN
             
             OrgNOCHandle: NOC216-ARIN
             OrgNOCName:   Network Operations Center
             OrgNOCPhone:  +1-212-746-4878 
             OrgNOCEmail:  noc@med.cornell.edu
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC216-ARIN
             
             RTechHandle: VIV3-ARIN
             RTechName:   Varughese, Vinay I.
             RTechPhone:  +1-646-962-0101 
             RTechEmail:  vinay@med.cornell.edu
             RTechRef:    https://rdap.arin.net/registry/entity/VIV3-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.
             #