Report for 103

Name

NWU-AS - Northwestern 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.

103 NWU-AS - Northwestern University, US

  Adjacency:     4  Upstream:     4  Downstream:     0
  Upstream Adjacent AS list
    AS2381          WISCNET1-AS - WiscNet, US
    AS22335         MREN - Metropolitan Research and Education Network, US
    AS174           COGENT-174 - Cogent Communications, LLC, US
    AS396450        INTERNET2-2 - Internet2, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1579  AS103          ORIGIN  Originate:     151040 /14.80  Transit:          0 /0.00  NWU-AS - Northwestern 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       %
20063 AS103         NWU-AS - Northwestern University, US              28      2      1     27      1   3.57%


  Prefix               AS Path                              Aggregation Suggestion
  8.28.178.0/23        4608 6939 2381 2381 103   
  8.30.248.0/22        4608 6939 2381 2381 103   
  38.124.97.0/24       4608 6939 2381 2381 103   
  129.105.0.0/16       4608 6939 2381 2381 103   
  165.124.0.0/17       4608 6939 2381 2381 103   
  165.124.17.0/24      4608 7575 1299 198949 396450 103   
  165.124.128.0/19     4608 6939 2381 2381 103   
  165.124.149.0/24     4608 7575 1299 198949 396450 103   
  165.124.160.0/20     4608 6939 2381 2381 103   
  165.124.176.0/21     4608 6939 2381 2381 103   
  165.124.184.0/23     4608 6939 2381 2381 103   
  165.124.186.0/24     4608 6939 2381 2381 103   
  165.124.192.0/19     4608 6939 2381 2381 103   
  165.124.224.0/21     4608 6939 2381 2381 103   
  165.124.232.0/22     4608 6939 2381 2381 103   
  165.124.240.0/20     4608 6939 2381 2381 103   
  192.5.143.0/24       4777 2497 174 103      
  192.26.85.0/24       4777 2497 174 103      
  192.26.86.0/23       4777 2497 174 103      
  192.31.253.0/24      4777 2497 174 103      
  199.74.64.0/18       4608 6939 2381 2381 103   
  199.249.165.0/24     4777 2497 174 103      
  199.249.166.0/23     4777 2497 174 103      
  199.249.166.0/24     4608 7575 1299 198949 396450 103   
  199.249.167.0/24     4777 2516 1299 198949 396450 103   
  199.249.168.0/23     4777 2497 174 103      
  199.249.168.0/23     4777 2516 1299 198949 396450 103 + Announce - aggregate of 199.249.168.0/24 (4777 2516 1299 198949 396450 103) and 199.249.169.0/24 (4777 2516 1299 198949 396450 103)
  199.249.168.0/24     4777 2516 1299 198949 396450 103 - Withdrawn - aggregated with 199.249.169.0/24 (4777 2516 1299 198949 396450 103)
  199.249.169.0/24     4777 2516 1299 198949 396450 103 - Withdrawn - aggregated with 199.249.168.0/24 (4777 2516 1299 198949 396450 103)

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

AS103   19 More Specifics   28 Total Advertisements   NWU-AS - Northwestern University, US
    8.28.178.0/23                 8.16.0.0/12
    8.30.248.0/22                 8.16.0.0/12
    38.124.97.0/24                38.0.0.0/8
    165.124.0.0/17                165.124.0.0/16
    165.124.17.0/24               165.124.0.0/16
    165.124.128.0/19              165.124.0.0/16
    165.124.149.0/24              165.124.0.0/16
    165.124.160.0/20              165.124.0.0/16
    165.124.176.0/21              165.124.0.0/16
    165.124.184.0/23              165.124.0.0/16
    165.124.186.0/24              165.124.0.0/16
    165.124.192.0/19              165.124.0.0/16
    165.124.224.0/21              165.124.0.0/16
    165.124.232.0/22              165.124.0.0/16
    165.124.240.0/20              165.124.0.0/16
    199.249.166.0/24              199.249.166.0/23
    199.249.167.0/24              199.249.166.0/23
    199.249.168.0/24              199.249.168.0/23
    199.249.169.0/24              199.249.168.0/23

Whois Entry

whois: 402599

IANA has recorded AS103 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS103\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:       103
             ASName:         NWU-AS
             ASHandle:       AS103
             RegDate:        1987-04-09
             Updated:        2012-04-02
             Ref:            https://rdap.arin.net/registry/autnum/103
             
             
             OrgName:        Northwestern University
             OrgId:          NORTHW-9-Z
             Address:        Leverone Hall #G-166
             Address:        2001 Sheridan Rd
             City:           Evanston
             StateProv:      IL
             PostalCode:     60208
             Country:        US
             RegDate:        2010-01-08
             Updated:        2012-05-11
             Ref:            https://rdap.arin.net/registry/entity/NORTHW-9-Z
             
             
             OrgTechHandle: NUNA-ARIN
             OrgTechName:   Northwestern University Network Administration
             OrgTechPhone:  +1-847-467-2222 
             OrgTechEmail:  data-network@northwestern.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/NUNA-ARIN
             
             OrgAbuseHandle: NUNS-ARIN
             OrgAbuseName:   Northwestern University Network Security
             OrgAbusePhone:  +1-847-467-2222 
             OrgAbuseEmail:  security@northwestern.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NUNS-ARIN
             
             RTechHandle: NUNA-ARIN
             RTechName:   Northwestern University Network Administration
             RTechPhone:  +1-847-467-2222 
             RTechEmail:  data-network@northwestern.edu
             RTechRef:    https://rdap.arin.net/registry/entity/NUNA-ARIN
             
             RAbuseHandle: NUNS-ARIN
             RAbuseName:   Northwestern University Network Security
             RAbusePhone:  +1-847-467-2222 
             RAbuseEmail:  security@northwestern.edu
             RAbuseRef:    https://rdap.arin.net/registry/entity/NUNS-ARIN
             
             RNOCHandle: NUN-ARIN
             RNOCName:   Northwestern University NOC
             RNOCPhone:  +1-847-467-2222 
             RNOCEmail:  data-network@northwestern.edu
             RNOCRef:    https://rdap.arin.net/registry/entity/NUN-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.
             #