AS61231 Neos-Networks Neos Networks Limited

Neos-Networks Neos Networks Limited · registered in the United Kingdom

IPv4 addresses33,02414 prefixes · 0.001% of announced IPv4

Rank in United Kingdom#129largest network in GB by IPv4 space, of 2,074 · 0.05% of GB

Rank worldwide#4,737of 79,396 networks with IPv4

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

CountryUnited Kingdom2,261 ASNs registered there

Open AS61231 in ASN lookup Look up an IP in this network (155.136.198.1) All networks in United Kingdom

IPv4 prefixes

All 14 prefixes, in address order.

155.136.198.0/23
155.136.224.0/22
155.136.230.0/23
155.136.232.0/23
161.12.0.0/22
161.12.4.0/23
161.12.20.0/22
161.12.24.0/24
161.12.26.0/23
161.12.28.0/22
161.12.32.0/19
161.12.64.0/18
185.14.144.0/22
194.169.150.0/23

IPv6 prefixes

All 1 prefix.

2a02:f9c0::/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