Report for 231

Name

MISU-231 - Michigan State 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.

231 MISU-231 - Michigan State University, US

  Adjacency:     4  Upstream:     3  Downstream:     1
  Upstream Adjacent AS list
    AS11537         INTERNET2-RESEARCH-EDU - Internet2, US
    AS11164         INTERNET2-I2PX - Internet2, US
    AS237           MERIT-AS-14 - Merit Network Inc., US
  Downstream Adjacent AS list
    AS229           MERIT-AS-6 - Merit Network Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
530   AS231          ORG+TRN Originate:     789504 /12.41  Transit:        512 /23.00 MISU-231 - Michigan State 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       %
20526 AS231         MISU-231 - Michigan State University, US           7      2      1      6      1  14.29%


  Prefix               AS Path                              Aggregation Suggestion
  35.8.0.0/13          4777 2516 1299 237 231   
  35.12.240.0/21       4777 2497 11164 231    
  35.20.0.0/14         4777 2516 1299 237 231   
  192.108.188.0/24     4777 2516 1299 237 231   
  192.108.190.0/23     4777 2516 1299 237 231 + Announce - aggregate of 192.108.190.0/24 (4777 2516 1299 237 231) and 192.108.191.0/24 (4777 2516 1299 237 231)
  192.108.190.0/24     4777 2516 1299 237 231 - Withdrawn - aggregated with 192.108.191.0/24 (4777 2516 1299 237 231)
  192.108.191.0/24     4777 2516 1299 237 231 - Withdrawn - aggregated with 192.108.190.0/24 (4777 2516 1299 237 231)
  192.231.113.0/24     4777 2516 1299 237 231   

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

AS231   2 More Specifics   7 Total Advertisements   MISU-231 - Michigan State University, US
    35.8.0.0/13                   35.0.0.0/12
    35.12.240.0/21                35.0.0.0/12

Whois Entry

whois: 402332

IANA has recorded AS231 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS231\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:       231
             ASName:         MISU-231
             ASHandle:       AS231
             RegDate:        2021-06-28
             Updated:        2021-06-28
             Ref:            https://rdap.arin.net/registry/autnum/231
             
             
             OrgName:        Michigan State University
             OrgId:          MISU
             Address:        IT Services
             Address:        450 Auditorium Rd., Suite 400
             City:           East Lansing
             StateProv:      MI
             PostalCode:     48824
             Country:        US
             RegDate:        1991-07-24
             Updated:        2023-10-31
             Ref:            https://rdap.arin.net/registry/entity/MISU
             
             
             OrgAbuseHandle: ATS14-ARIN
             OrgAbuseName:   Abuse Technical Support
             OrgAbusePhone:  +1-517-432-6200 
             OrgAbuseEmail:  abuse@msu.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ATS14-ARIN
             
             OrgTechHandle: DTS21-ARIN
             OrgTechName:   DNS Technical Support
             OrgTechPhone:  +1-517-432-6200 
             OrgTechEmail:  dnstech@msu.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/DTS21-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.
             #