AS22629 NORTHWESTERN CORPORATION

NORWORLD - NORTHWESTERN CORPORATION · registered in the United States

IPv4 addresses3,0722 prefixes · <0.001% of announced IPv4

Rank in United States#5,338largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#18,630of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS22629 in ASN lookup Look up an IP in this network (199.96.16.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

199.96.16.0/21
199.96.24.0/22

Other ASNs named NORTHWESTERN CORPORATION

1 other network uses the same organisation name; together with AS22629 they announce 3,840 IPv4 addresses.

ASNNameIPv4 addresses

AS15157NORWORLD - NORTHWESTERN CORPORATION US768

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources