AS398256 Ultahost, Inc.

AS-ULTAHOST - Ultahost, Inc. · registered in the United States

IPv4 addresses4,09615 prefixes · <0.001% of announced IPv4

Rank in United States#4,861largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#16,487of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS398256 in ASN lookup Look up an IP in this network (51.241.125.1) All networks in United States

IPv4 prefixes

All 15 prefixes, in address order.

51.241.125.0/24
64.84.57.0/24
64.204.80.0/24
67.210.97.0/24
82.27.71.0/24
82.27.78.0/24
96.62.77.0/24
104.145.210.0/24
151.241.99.0/24
151.241.117.0/24
167.148.88.0/24
185.233.166.0/24
192.142.48.0/23
202.155.8.0/24
213.139.77.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS397766#4858 FDU-CA - Fairleigh Dickinson University4,096

AS398007#4859 TXBIOMED-1 - Texas Biomedical Research Institute4,096

AS398022#4860 OTP-398022 - Otter Tail Power Company4,096

AS398313#4862 SFU - Saint Francis University4,096

AS398440#4863 AS-CITYOFVISALIA - CITY OF VISALIA4,096

AS398536#4864 FRC-BROADBAND-01 - Farmers Rural Connect, Inc.4,096

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