AS400940 Railway

RAILWAY - Railway · registered in the United States

IPv4 addresses7,4246 prefixes · <0.001% of announced IPv4

Rank in United States#3,530largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#11,261of 79,396 networks with IPv4

IPv62,048 x /484 prefixes

CountryUnited States18,679 ASNs registered there

Open AS400940 in ASN lookup Look up an IP in this network (66.33.22.1) All networks in United States

IPv4 prefixes

All 6 prefixes, in address order.

66.33.22.0/23
69.46.46.0/24
152.55.176.0/20
153.52.224.0/23
162.220.232.0/22
208.77.244.0/22

IPv6 prefixes

All 4 prefixes.

2607:99c0::/38
2607:99c0:800::/39
2607:99c0:a00::/40
2607:99c0:c00::/40

Similar-sized networks in United States

ASNNameIPv4 addresses

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AS40091#3529 WVVANET - WVVA.net Inc.7,424

AS10564#3531 TCSI - ROCKET SOFTWARE INC7,424

AS62597#3532 NSONE - NSONE Inc7,424

AS518#3533 DNIC-AS-00518 - United States Department of Defense (DoD)7,424

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