AS29017 GYRON NTT Global Data Centers EMEA UK Ltd.

GYRON NTT Global Data Centers EMEA UK Ltd. · registered in the United Kingdom

IPv4 addresses34,56010 prefixes · 0.001% of announced IPv4

Rank in United Kingdom#121largest network in GB by IPv4 space, of 2,074 · 0.05% of GB

Rank worldwide#4,620of 79,396 networks with IPv4

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

CountryUnited Kingdom2,261 ASNs registered there

Open AS29017 in ASN lookup Look up an IP in this network (78.40.58.1) All networks in United Kingdom

IPv4 prefixes

All 10 prefixes, in address order.

78.40.58.0/24
83.223.96.0/19
89.145.64.0/20
89.145.80.0/20
89.145.96.0/19
185.32.105.0/24
185.32.106.0/23
185.230.220.0/23
193.227.111.0/24
212.113.128.0/19

IPv6 prefixes

All 1 prefix.

2a00:14f0::/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