AS50510 CRUK-AS Cancer Research UK

CRUK-AS Cancer Research UK · registered in the United Kingdom

IPv4 addresses1,2804 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#922largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#28,913of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited Kingdom2,261 ASNs registered there

Open AS50510 in ASN lookup Look up an IP in this network (143.65.192.1) All networks in United Kingdom

IPv4 prefixes

All 4 prefixes, in address order.

143.65.192.0/24
143.65.196.0/24
143.65.200.0/23
143.65.206.0/24

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses

AS48444#919 INTER-NET-UK Internet Ltd1,280

AS49415#920 VTSL-AS VTSL Ltd1,280

AS49937#921 INTERACTIVESPORTS Interactive Sports Limited1,280

AS56540#923 CONSENSUSONE-AS BITNIFTY LTD1,280

AS58349#924 INNETRA-AS Elna Paulette Valentin trading as INNETRA PC1,280

AS60492#925 MIMECAST-JE Mimecast Services Limited1,280

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