Report for 33503

Name

MCW-1-AS - Medical College of Wisconsin, 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.

33503 MCW-1-AS - Medical College of Wisconsin, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS2381          WISCNET1-AS - WiscNet, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
3361  AS33503        ORIGIN  Originate:      66304 /15.98  Transit:          0 /0.00  MCW-1-AS - Medical College of Wisconsin, 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       %
21831 AS33503       MCW-1-AS - Medical College of Wisconsin, US        4      1      0      3      1  25.00%


  Prefix               AS Path                              Aggregation Suggestion
  141.106.0.0/16       4777 2497 11164 2381 33503   
  141.106.12.0/24      4608 6939 2381 2381 33503   
  141.106.69.0/24      4777 2497 11164 2381 33503 - Withdrawn - matching aggregate 141.106.0.0/16 4777 2497 11164 2381 33503
  141.106.114.0/24     4608 6939 2381 2381 33503   

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

AS33503   3 More Specifics   4 Total Advertisements   MCW-1-AS - Medical College of Wisconsin, US
    141.106.12.0/24               141.106.0.0/16
    141.106.69.0/24               141.106.0.0/16
    141.106.114.0/24              141.106.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 141.106.12.0/24             Announced
    + 141.106.114.0/24            Announced

Whois Entry

whois: 402332

IANA has recorded AS33503 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS33503\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:       33503
             ASName:         MCW-1-AS
             ASHandle:       AS33503
             RegDate:        2005-01-05
             Updated:        2012-03-20
             Ref:            https://rdap.arin.net/registry/autnum/33503
             
             
             OrgName:        Medical College of Wisconsin
             OrgId:          MCW-1
             Address:        MIS Department - Information Services     8701 Watertown Plank Road
             City:           Milwaukee
             StateProv:      WI
             PostalCode:     53226
             Country:        US
             RegDate:        1990-07-10
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/MCW-1
             
             
             OrgTechHandle: MH4-ORG-ARIN
             OrgTechName:   Medical College of Wisconsin Information Services
             OrgTechPhone:  +1-414-955-4357 
             OrgTechEmail:  hostmaster@mcw.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/MH4-ORG-ARIN
             
             OrgAbuseHandle: MH4-ORG-ARIN
             OrgAbuseName:   Medical College of Wisconsin Information Services
             OrgAbusePhone:  +1-414-955-4357 
             OrgAbuseEmail:  hostmaster@mcw.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MH4-ORG-ARIN
             
             RTechHandle: MH4-ORG-ARIN
             RTechName:   Medical College of Wisconsin Information Services
             RTechPhone:  +1-414-955-4357 
             RTechEmail:  hostmaster@mcw.edu
             RTechRef:    https://rdap.arin.net/registry/entity/MH4-ORG-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.
             #