AS51561

Name: AS51561 — ICUK Computing Services Limited
Creator: ipdex

ICUK Computing Services Limited ISP registered in United Kingdom

68IPv4 prefixes

2IPv6 prefixes

9%RPKI-valid

#6,688AS Rank

327/327RIS visibility

#52Rank in United Kingdom

2010-09-28Allocated

ICUK Computing Services Limited (AS51561) — ISP, registered in United Kingdom. announces 68 IPv4 prefixes + 2 IPv6 prefixes. Rank in United Kingdom: #52. Allocated: 2010-09-28.

IPv4 68IPv6 2

Announced prefixes · 70

v4 138.124.128.0/20 unknown
v4 138.124.128.0/24 unknown
v4 138.124.134.0/24 unknown
v4 138.124.135.0/24 unknown
v4 138.124.136.0/24 unknown
v4 138.124.137.0/24 unknown
v4 138.124.138.0/24 unknown
v4 138.124.142.0/24 unknown
v4 181.215.32.0/24 valid
v4 185.132.52.0/24 unknown
v4 185.137.240.0/24 unknown
v4 185.140.16.0/23 unknown
v4 185.140.18.0/23 unknown
v4 185.145.152.0/22 unknown
v4 185.145.152.0/24 unknown
v4 185.152.2.0/24 valid
v4 185.2.236.0/22 unknown
v4 185.201.208.0/22 unknown
v4 185.234.255.0/24 unknown
v4 185.243.62.0/24 unknown
v4 185.243.63.0/24 unknown
v4 185.253.88.0/24 unknown
v4 185.32.55.0/24 unknown
v4 185.35.148.0/22 unknown
v4 185.35.148.0/24 unknown
v4 185.35.149.0/24 unknown
v4 185.35.150.0/24 unknown
v4 185.35.151.0/24 unknown
v4 188.211.249.0/24 unknown
v4 188.240.160.0/19 unknown
v4 188.240.160.0/24 unknown
v4 188.240.172.0/24 unknown
v4 188.240.173.0/24 unknown
v4 188.240.191.0/24 unknown
v4 193.161.10.0/24 valid
v4 193.161.9.0/24 valid
v4 193.187.0.0/24 unknown
v4 2.56.84.0/22 unknown
v4 205.157.160.0/19 unknown
v4 205.157.160.0/24 unknown
v4 37.235.43.0/24 unknown
v4 45.145.86.0/23 unknown
v4 45.93.112.0/22 unknown
v4 45.93.112.0/23 unknown
v4 46.102.192.0/19 unknown
v4 46.102.192.0/24 unknown
v4 46.102.193.0/24 unknown
v4 46.226.120.0/24 valid
v4 46.33.128.0/19 unknown
v4 46.33.128.0/24 unknown

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 69 IPv4 · 2 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	70
2026-06-13	70

Internet Exchanges · 3

LINX LON1 London 40 Gbps
LONAP London 40 Gbps
LINX LON2 London 20 Gbps

Facilities · 3

3 Facilities · 1 Countries

Equinix LD8 - London, Docklands London
Telehouse - London (Docklands North) London
Telehouse - London (Docklands West) London

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AS51561

Announced prefixes · 70

Prefix history

Internet Exchanges · 3

Facilities · 3

AS topology · Customer cone 3

Providers · 4

Peers · 89

Customers · 2

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