AS203258 UCNS-AS UCNS Limited

UCNS-AS UCNS Limited · registered in the United Kingdom

IPv4 addresses1,2803 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#932largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#29,325of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited Kingdom2,261 ASNs registered there

Open AS203258 in ASN lookup Look up an IP in this network (178.21.32.1) All networks in United Kingdom

IPv4 prefixes

All 3 prefixes, in address order.

178.21.32.0/23
178.21.34.0/24
178.21.38.0/23

Similar-sized networks in United Kingdom

ASNNameIPv4 addresses

AS201101#929 NATSEN-NC NATS (En Route) Ltd1,280

AS201715#930 ineedbr Ineedbroadband Ltd1,280

AS202052#931 CTS-GROUP CTS Group Ltd1,280

AS203851#933 as_csd001 CSD Network Services Ltd1,280

AS204415#934 nexgen NexGen Cloud Ltd1,280

AS204670#935 NTT NTT United Kingdom Ltd1,280

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