AS205311 Cambridge_Fibre_Networks Cambridge Fibre Networks Ltd.

Cambridge_Fibre_Networks Cambridge Fibre Networks Ltd. · registered in the United Kingdom

IPv4 addresses1,2802 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#880largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#27,582of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS205311 in ASN lookup Look up an IP in this network (185.219.108.1) All networks in United Kingdom

IPv4 prefixes

All 2 prefixes, in address order.

185.219.108.0/22
185.229.51.0/24

IPv6 prefixes

All 1 prefix.

2a0b:e540::/29

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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