Report for 25978

Name

RUSH-EXTERNAL - Rush University Medical Center, 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.

25978 RUSH-EXTERNAL - Rush University Medical Center, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887 - Crown Castle Fiber LLC, US
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS33491         COMCAST-33491 - Comcast Cable Communications, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
3101  AS25978        ORIGIN  Originate:      68608 /15.93  Transit:          0 /0.00  RUSH-EXTERNAL - Rush University Medical Center, 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       %
15999 AS25978       RUSH-EXTERNAL - Rush University Medical Cente      5      2      0      3      2  40.00%


  Prefix               AS Path                              Aggregation Suggestion
  144.74.0.0/17        4777 2516 7922 33491 25978   
  144.74.16.0/21       4777 2497 6461 25978   
  144.74.16.0/23       4777 2497 6461 25978 - Withdrawn - matching aggregate 144.74.16.0/21 4777 2497 6461 25978
  144.74.20.0/23       4777 2497 6461 25978 - Withdrawn - matching aggregate 144.74.16.0/21 4777 2497 6461 25978
  144.74.128.0/17      4608 7575 1299 46887 25978   

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

AS25978   5 More Specifics   5 Total Advertisements   RUSH-EXTERNAL - Rush University Medical Center, US
    144.74.0.0/17                 144.74.0.0/16
    144.74.16.0/21                144.74.0.0/16
    144.74.16.0/23                144.74.0.0/16
    144.74.20.0/23                144.74.0.0/16
    144.74.128.0/17               144.74.0.0/16

Whois Entry

whois: 402591

IANA has recorded AS25978 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS25978\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:       25978
             ASName:         RUSH-EXTERNAL
             ASHandle:       AS25978
             RegDate:        2025-02-19
             Updated:        2025-02-19
             Ref:            https://rdap.arin.net/registry/autnum/25978
             
             
             OrgName:        Rush University Medical Center
             OrgId:          RPLMC
             Address:        1653 W. Congress Parkway
             City:           Chicago
             StateProv:      IL
             PostalCode:     60612
             Country:        US
             RegDate:        1990-11-16
             Updated:        2024-12-04
             Ref:            https://rdap.arin.net/registry/entity/RPLMC
             
             
             OrgTechHandle: CLUKE-ARIN
             OrgTechName:   Clukey, Jay 
             OrgTechPhone:  +1-312-942-4062 
             OrgTechEmail:  jclukey@rush.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/CLUKE-ARIN
             
             OrgAbuseHandle: KLO1-ARIN
             OrgAbuseName:   ODER, KARL 
             OrgAbusePhone:  +1-312-563-8607 
             OrgAbuseEmail:  koder@rush.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/KLO1-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.
             #