Report for 3128

Name

BRUWS-AS3128 - University of Wisconsin System, 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.

3128 BRUWS-AS3128 - University of Wisconsin System, US

  Adjacency:     9  Upstream:     4  Downstream:     5
  Upstream Adjacent AS list
    AS2381          WISCNET1-AS - WiscNet, US
    AS11537         INTERNET2-RESEARCH-EDU - Internet2, US
    AS11164         INTERNET2-I2PX - Internet2, US
    AS1299          TWELVE99 Arelion, fka Telia Carrier, SE
  Downstream Adjacent AS list
    AS394049        UWHCA - University of Wisconsin Hospital and Clinics, US
    AS46103         UWW-EDU-ASN - University of Wisconsin Whitewater, US
    AS19184         UWECNET - University of Wisconsin - Eau Claire, US
    AS7050          UW-MILWAUKEE-AS1 - University of Wisconsin - Milwaukee, US
    AS59            WISC-MADISON-AS - University of Wisconsin Madison, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
572   AS3128         ORG+TRN Originate:     656640 /12.68  Transit:     202240 /14.37 BRUWS-AS3128 - University of Wisconsin System, 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       %
20004 AS3128        BRUWS-AS3128 - University of Wisconsin System     12      1      0     11      1   8.33%


  Prefix               AS Path                              Aggregation Suggestion
  131.210.0.0/16       4777 2497 11164 3128   
  137.81.0.0/16        4777 2497 11164 3128   
  137.104.0.0/16       4777 2497 11164 3128   
  138.49.0.0/16        4777 2497 11164 3128   
  138.49.160.0/22      4777 2497 11164 3128 - Withdrawn - matching aggregate 138.49.0.0/16 4777 2497 11164 3128
  139.225.0.0/16       4777 2497 11164 3128   
  141.233.0.0/16       4777 2497 11164 3128   
  143.200.0.0/16       4777 2497 11164 3128   
  143.235.0.0/16       4777 2497 11164 3128   
  143.236.0.0/16       4777 2497 11164 3128   
  144.13.0.0/16        4777 2497 11164 3128   
  192.35.81.0/24       4777 2497 11164 3128   

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

AS3128   1 More Specifics   12 Total Advertisements   BRUWS-AS3128 - University of Wisconsin System, US
    138.49.160.0/22               138.49.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS3128 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3128\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:       3128
             ASName:         BRUWS-AS3128
             ASHandle:       AS3128
             RegDate:        1993-11-17
             Updated:        2018-03-07
             Ref:            https://rdap.arin.net/registry/autnum/3128
             
             
             OrgName:        University of Wisconsin System
             OrgId:          BRUWS
             Address:        1220 Linden Drive
             City:           Madison
             StateProv:      WI
             PostalCode:     53705
             Country:        US
             RegDate:        2014-04-16
             Updated:        2022-09-26
             Ref:            https://rdap.arin.net/registry/entity/BRUWS
             
             
             OrgNOCHandle: NOC31830-ARIN
             OrgNOCName:   Network Operations Center
             OrgNOCPhone:  +1-608-263-4188 
             OrgNOCEmail:  noc@uwsys.net
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC31830-ARIN
             
             OrgAbuseHandle: NOC31830-ARIN
             OrgAbuseName:   Network Operations Center
             OrgAbusePhone:  +1-608-263-4188 
             OrgAbuseEmail:  noc@uwsys.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC31830-ARIN
             
             OrgTechHandle: NOC31830-ARIN
             OrgTechName:   Network Operations Center
             OrgTechPhone:  +1-608-263-4188 
             OrgTechEmail:  noc@uwsys.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/NOC31830-ARIN
             
             OrgDNSHandle: UWSNH-ARIN
             OrgDNSName:   University of Wisconsin System Network Hostmaster
             OrgDNSPhone:  +1-608-263-4188 
             OrgDNSEmail:  hostmaster@uwsys.net
             OrgDNSRef:    https://rdap.arin.net/registry/entity/UWSNH-ARIN
             
             OrgTechHandle: MHA260-ARIN
             OrgTechName:   Hare, Michael 
             OrgTechPhone:  +1-608-262-5236 
             OrgTechEmail:  michael.hare@wisc.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/MHA260-ARIN
             
             OrgRoutingHandle: NOC31830-ARIN
             OrgRoutingName:   Network Operations Center
             OrgRoutingPhone:  +1-608-263-4188 
             OrgRoutingEmail:  noc@uwsys.net
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC31830-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.
             #