# # 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. # # # Query terms are ambiguous. The query is assumed to be: # "n 199.96.21.133" # # Use "?" to get help. # NetRange: 199.96.16.0 - 199.96.27.255 CIDR: 199.96.24.0/22, 199.96.16.0/21 NetName: NETBLOCK-NORTHWESTERN-CORPORATION NetHandle: NET-199-96-16-0-1 Parent: NET199 (NET-199-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: NORTHWESTERN CORPORATION (NORTHW-28) RegDate: 1993-12-29 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/199.96.16.0 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 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 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 # # 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. #