NORTHWESTERN CORPORATION

Data as of 2026-09-20
GLEIF verified
LEI
3BPWMBHR1R9SHUN7J795
Registered name
NORTHWESTERN CORPORATION
Jurisdiction
US-DE
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks16 · 3,840 IPv4 addresses
Also registered under this name 114 netblocks across 13 separate records
Record ID241136018
RegistryBGP
Owner jurisdictionUS-DE
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 3BPWMBHR1R9SHUN7J795
Shared handles clustered on 7 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (16)

⬇ export CSV
CIDR Org name Registry Status Confidence
199.3.108.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.3.109.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.16.0 – 199.96.27.255 NORTHWESTERN CORPORATION ARIN DIRECT ALLOCATION ● high
199.96.16.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.17.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.18.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.19.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.20.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.21.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.22.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.23.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.24.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.25.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.26.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
199.96.27.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high
206.107.235.0/24 NORTHWESTERN CORPORATION BGP ANNOUNCED ● high

Footprint over time

13 weekly snapshots · JSON
16 0 netblocks since 2026-07-05
2026-07-05 peak 16 2026-09-20

NIC Handles

AS15157 AS22629 FERRI236-ARIN NORTHW-28 SC1244-ARIN SC1244-ARIN WILSO1898-ARIN