Report for 15157

Name

NORWORLD - NORTHWESTERN CORPORATION, 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.

15157 NORWORLD - NORTHWESTERN CORPORATION, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS13576         SDNW-13576 - SDN Communications, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
44396 AS15157        ORIGIN  Originate:        768 /22.42  Transit:          0 /0.00  NORWORLD - NORTHWESTERN CORPORATION, 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       %
21227 AS15157       NORWORLD - NORTHWESTERN CORPORATION, US            3      2      1      2      1  33.33%


  Prefix               AS Path                              Aggregation Suggestion
  199.3.108.0/23       4777 6939 13576 15157 15157 + Announce - aggregate of 199.3.108.0/24 (4777 6939 13576 15157 15157) and 199.3.109.0/24 (4777 6939 13576 15157 15157)
  199.3.108.0/24       4777 6939 13576 15157 15157 - Withdrawn - aggregated with 199.3.109.0/24 (4777 6939 13576 15157 15157)
  199.3.109.0/24       4777 6939 13576 15157 15157 - Withdrawn - aggregated with 199.3.108.0/24 (4777 6939 13576 15157 15157)
  206.107.235.0/24     4777 6939 13576 15157 15157   

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

AS15157   3 More Specifics   3 Total Advertisements   NORWORLD - NORTHWESTERN CORPORATION, US
    199.3.108.0/24                199.0.0.0/14
    199.3.109.0/24                199.0.0.0/14
    206.107.235.0/24              206.104.0.0/14

Whois Entry

whois: 402332

IANA has recorded AS15157 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS15157\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:       15157
             ASName:         NORWORLD
             ASHandle:       AS15157
             RegDate:        2000-03-27
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/15157
             
             
             OrgName:        NORTHWESTERN CORPORATION
             OrgId:          NORTHW-28
             Address:        125 S. Dakota Ave.
             City:           Sioux Falls
             StateProv:      SD
             PostalCode:     57104
             Country:        US
             RegDate:        1999-10-22
             Updated:        2023-12-12
             Ref:            https://rdap.arin.net/registry/entity/NORTHW-28
             
             
             OrgTechHandle: WILSO1898-ARIN
             OrgTechName:   Wilson, Theron 
             OrgTechPhone:  +1-406-497-1652 
             OrgTechEmail:  theron.wilson@northwestern.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WILSO1898-ARIN
             
             OrgAbuseHandle: SC1244-ARIN
             OrgAbuseName:   Cleverly, Sean 
             OrgAbusePhone:  +1-406-497-4131 
             OrgAbuseEmail:  Sean.Cleverly@northwestern.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SC1244-ARIN
             
             OrgRoutingHandle: FERRI236-ARIN
             OrgRoutingName:   Ferriter, Kelly 
             OrgRoutingPhone:  +1-406-497-4585 
             OrgRoutingEmail:  kelly.ferriter@northwestern.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/FERRI236-ARIN
             
             RTechHandle: SC1244-ARIN
             RTechName:   Cleverly, Sean 
             RTechPhone:  +1-406-497-4131 
             RTechEmail:  Sean.Cleverly@northwestern.com
             RTechRef:    https://rdap.arin.net/registry/entity/SC1244-ARIN
             
             RAbuseHandle: SC1244-ARIN
             RAbuseName:   Cleverly, Sean 
             RAbusePhone:  +1-406-497-4131 
             RAbuseEmail:  Sean.Cleverly@northwestern.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/SC1244-ARIN
             
             RTechHandle: LHG8-ARIN
             RTechName:   Gates, Lorrie H
             RTechPhone:  +1-406-497-2870 
             RTechEmail:  lorrie.gates@northwestern.com
             RTechRef:    https://rdap.arin.net/registry/entity/LHG8-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.
             #