AS41489 WF-AS Watchfront Limited

WF-AS Watchfront Limited · registered in the United Kingdom

IPv4 addresses7,6805 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#355largest network in GB by IPv4 space, of 2,074 · 0.01% of GB

Rank worldwide#11,092of 79,396 networks with IPv4

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

CountryUnited Kingdom2,261 ASNs registered there

Open AS41489 in ASN lookup Look up an IP in this network (5.158.224.1) All networks in United Kingdom

IPv4 prefixes

All 5 prefixes, in address order.

5.158.224.0/21
81.187.42.0/24
81.187.96.0/20
81.187.128.0/24
185.76.208.0/22

IPv6 prefixes

All 1 prefix.

2a02:17d8::/32

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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