Report for 21643

Name

MWU-ASN - Midwestern 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 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.

21643 MWU-ASN - Midwestern University, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
59640 AS21643        ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  MWU-ASN - Midwestern University, 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       %
36277 AS21643       MWU-ASN - Midwestern University, US                1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  204.152.157.0/24     4777 2516 3356 21643   

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

AS21643   1 More Specifics   1 Total Advertisements   MWU-ASN - Midwestern University, US
    204.152.157.0/24              204.152.156.0/22

Whois Entry

whois: 402332

IANA has recorded AS21643 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21643\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:       21643
             ASName:         MWU-ASN
             ASHandle:       AS21643
             RegDate:        2014-10-14
             Updated:        2014-10-14
             Ref:            https://rdap.arin.net/registry/autnum/21643
             
             
             OrgName:        Midwestern University
             OrgId:          MIDWES-1
             Address:        555 31st St.
             City:           Downers Grove
             StateProv:      IL
             PostalCode:     60515
             Country:        US
             RegDate:        1996-01-24
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/MIDWES-1
             
             
             OrgAbuseHandle: JGJ12-ARIN
             OrgAbuseName:   Jacobson, James G.
             OrgAbusePhone:  +1-630-515-7351 
             OrgAbuseEmail:  jjacob@midwestern.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/JGJ12-ARIN
             
             OrgTechHandle: JGJ12-ARIN
             OrgTechName:   Jacobson, James G.
             OrgTechPhone:  +1-630-515-7351 
             OrgTechEmail:  jjacob@midwestern.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/JGJ12-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.
             #