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AS51561

ICUK Computing Services Limited

AS51561 is ICUK Computing Services Limited (icuk.net). It announces 72,960 IPv4 addresses in 71 prefixes, and 2 IPv6 prefixes.

United Kingdom· RIPE· allocated 2010-09-28· isp

72,960
IPv4 addresses announced
71
IPv4 prefixes
2
IPv6 prefixes
9.59%
of its routes RPKI-valid
72,960
of its IPv4 geolocated
2
countries

Where its space is

The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.

  1. United Kingdom72,704 · 99.65%
  2. Germany256 · 0.35%

Registry record

Its ASN Whois record, as the registry publishes it.

handle
AS-ICUK
name
ICUK Computing Services Limited
org
ORG-ICSL4-RIPE
org name
ICUK Computing Services Limited
org address
Suite 5, Metropolitan House, 38-40 High Street, CR0 1YB, Croydon, UNITED KINGDOM
org country
GB
country
GB
source
ripe
status
ASSIGNED
created
2010-09-28
updated
2026-02-24
remarks
cf-validation: 30b6d34f3d64496a9a733f6622439db3
maintainer
RIPE-NCC-END-MNT|ICUK-MNT
abuse name
ICUK Ripe Administrator
abuse email
abuse@interdns.co.uk
abuse kind
role

What the databases see

Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.

IPv4 prefixes

Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.

71 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
2.56.84.0/22United Kingdomnot found172026-10-02
5.133.168.0/23United Kingdomnot found172026-10-02
5.133.170.0/23United Kingdomnot found172026-10-02
5.254.162.0/23United Kingdomnot found172026-10-02
5.254.164.0/23United Kingdomnot found172026-10-02
37.235.43.0/24United Kingdomnot found172026-10-02
45.93.112.0/22United Kingdomnot found172026-10-02
45.93.112.0/23United Kingdomnot found182026-10-02
45.145.86.0/23United Kingdomnot found172026-10-02
46.33.128.0/19United Kingdomnot found172026-10-02
46.33.128.0/24United Kingdomnot found182026-10-02
46.33.130.0/24United Kingdomnot found172026-10-02
46.33.156.0/24United Kingdomnot found172026-10-02
46.102.192.0/19United Kingdomnot found172026-10-02
46.102.192.0/24United Kingdomnot found182026-10-02
46.102.193.0/24United Kingdomnot found182026-10-02
46.226.120.0/24United Kingdomvalid172026-10-02
80.95.192.0/20United Kingdomnot found172026-10-02
80.209.128.0/19United Kingdomnot found172026-10-02
80.209.128.0/24United Kingdomnot found182026-10-02
80.209.155.0/24United Kingdomnot found172026-10-02
80.209.159.0/24United Kingdomnot found182026-10-02
80.209.160.0/20United Kingdomnot found172026-10-02
80.209.176.0/21United Kingdomnot found172026-10-02
80.209.184.0/22United Kingdomnot found172026-10-02
80.209.188.0/23United Kingdomnot found172026-10-02
80.209.190.0/23United Kingdomnot found172026-10-02
80.247.216.0/24United Kingdomvalid172026-10-02
82.39.142.0/24United Kingdomvalid172026-10-02
89.107.24.0/22United Kingdomnot found172026-10-02
91.233.33.0/24United Kingdomnot found172026-10-02
138.124.128.0/20United Kingdomnot found172026-10-02
138.124.128.0/24United Kingdomnot found172026-10-02
138.124.134.0/24United Kingdomnot found172026-10-02
138.124.135.0/24United Kingdomnot found172026-10-02
138.124.136.0/24United Kingdomnot found172026-10-02
138.124.137.0/24United Kingdomnot found172026-10-02
138.124.138.0/24United Kingdomnot found172026-10-02
138.124.142.0/24United Kingdomnot found172026-10-02
185.2.236.0/22United Kingdomnot found172026-10-02
185.32.55.0/24United Kingdomnot found172026-10-02
185.35.148.0/22United Kingdomnot found182026-10-02
185.35.148.0/24United Kingdomnot found172026-10-02
185.35.149.0/24United Kingdomnot found172026-10-02
185.35.150.0/24United Kingdomnot found172026-10-02
185.35.151.0/24United Kingdomnot found172026-10-02
185.132.52.0/24United Kingdomnot found172026-10-02
185.137.240.0/24United Kingdomnot found182026-10-02
185.140.16.0/23United Kingdomnot found172026-10-02
185.140.18.0/23United Kingdomnot found172026-10-02
185.145.152.0/22United Kingdomnot found172026-10-02
185.145.152.0/24United Kingdomnot found172026-10-02
185.152.2.0/24United Kingdomvalid172026-10-02
185.168.10.0/24Germanynot found172026-10-02
185.201.208.0/22United Kingdomnot found172026-10-02
185.234.255.0/24United Kingdomnot found172026-10-02
185.243.62.0/24United Kingdomnot found172026-10-02
185.243.63.0/24United Kingdomnot found172026-10-02
185.253.88.0/24United Kingdomvalid172026-10-02
188.211.249.0/24United Kingdomnot found172026-10-02
188.240.160.0/19United Kingdomnot found172026-10-02
188.240.160.0/24United Kingdomnot found182026-10-02
188.240.172.0/24United Kingdomnot found182026-10-02
188.240.173.0/24United Kingdomnot found182026-10-02
188.240.191.0/24United Kingdomnot found182026-10-02
193.161.9.0/24United Kingdomvalid172026-10-02
193.161.10.0/24United Kingdomvalid172026-10-02
193.187.0.0/24United Kingdomnot found172026-10-02
205.157.160.0/19United Kingdomnot found172026-10-02
205.157.160.0/24United Kingdomnot found182026-10-02
217.22.12.0/24United Kingdomnot found172026-10-02

IPv6 prefixes

Every IPv6 prefix BGP Route saw it announce.

2 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
2a00:b900::/32United Kingdomnot found202026-10-02
2a00:b900:2::/48United Kingdomnot found182026-10-02
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