$ query “AS15157” --type=asn → 1 result(s)
AS15157 · NORWORLD
NORTHWESTERN CORPORATION
AS15157 is run by NORTHWESTERN CORPORATION and is an enterprise stub network, based in the United States since 2000. The system announces 768 IPv4 addresses. The bulk of its IP address space is in the United States. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇺🇸 United States
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- March 27, 2000
- Last Changed
- October 01, 2026
- Last Seen
- October 23, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 3 / 2
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 768
- Largest IPv4 Prefix
- /23 (512 addresses)
- Geolocated Countries
- 🇺🇸 United States (768 IPs)
- Prefix Changed
- June 26, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Degree
- 2 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (3 total)
- 199.3.108.0/23 (512 addresses (/23 prefix))
- 206.107.235.0/24 (256 addresses (/24 prefix))