AS9011 The Patent Office

The Patent Office · registered in the United Kingdom

IPv4 addresses8,1921 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#334largest network in GB by IPv4 space, of 2,074 · 0.01% of GB

Rank worldwide#10,218of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS9011 in ASN lookup Look up an IP in this network (212.100.0.1) All networks in United Kingdom

IPv4 prefixes

All 1 prefix, in address order.

212.100.0.0/19

IPv6 prefixes

All 1 prefix.

2a00:ed00::/32

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses

AS202020#331 FLEXGRID Flexgrid Ltd8,448

AS44684#332 MYTHIC Mythic Beasts Ltd8,192

AS8838#333 STRIPE-21-GROUP-LIMITED Compuweb Communications Services Limited8,192

AS34270#335 INETC Internet Connections Ltd8,192

AS41484#336 nynet NYnet Ltd8,192

AS205072#337 LAYERSHIFT Layershift Limited8,192

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