Autonomous System details

AS51561

ICUK Computing Services Limited  ·  icuk.net

United Kingdom

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AS51561 – ICUK Computing Services Limited

Field Value
Country United Kingdom
Website icuk.net
Hosted domains 11,004
IPv4 addresses 70,656
IPv6 addresses 79,229,371,440,083,952,629,200,000,000
ASN type ISP
Registry ripe
Allocated 16 years ago on Sep 28, 2010
Updated 2 months ago on Feb 24, 2026

IP Ranges

Netblock Company Num of IPs
46.33.128.0/19 ICUK Computing Services Limited 8,192
46.102.192.0/19 ICUK Computing Services Limited 8,192
80.209.128.0/19 ICUK Computing Services Limited 8,192
188.240.160.0/19 ICUK Computing Services Limited 8,192
205.157.160.0/19 ICUK Computing Services Limited 8,192
80.95.192.0/20 ICUK Computing Services Limited 4,096
80.209.160.0/20 ICUK Computing Services Limited 4,096
138.124.128.0/20 ICUK Computing Services Limited 4,096
80.209.176.0/21 ICUK Computing Services Limited 2,048
2.56.84.0/22 ICUK Computing Services Limited 1,024
45.93.112.0/22 ICUK Computing Services Limited 1,024
80.209.184.0/22 ICUK Computing Services Limited 1,024
89.107.24.0/22 CSD Communications Ltd 1,024
185.2.236.0/22 ICUK Computing Services Limited 1,024
185.145.152.0/22 ICUK Computing Services Limited 1,024
185.201.208.0/22 CTR Communications Limited 1,024
5.133.168.0/23 Jibba Jabba Internet Services Ltd 512
5.133.170.0/23 Jibba Jabba Internet Services Ltd 512
5.254.162.0/23 Webmate Internet Services Ltd. 512
5.254.164.0/23 Webmate Internet Services Ltd. 512
45.93.112.0/23 ICUK Computing Services Limited 512
45.145.86.0/23 Fluidity Connect Limited 512
185.140.16.0/23 ICUK Computing Services Limited 512
185.140.18.0/23 ICUK Computing Services Limited 512
37.235.43.0/24 Shetland Broadband LLP 256
46.33.128.0/24 Interdsl Network Structure 256
46.33.130.0/24 ICUK Computing Services Limited 256
46.33.156.0/24 LL user 11125185019 256
46.102.192.0/24 ICUK Computing Services Limited 256
46.102.193.0/24 ICUK Computing Services Limited 256
46.226.120.0/24 Agile ICT Ltd 256
80.209.128.0/24 ICUK Computing Services Limited 256
80.209.155.0/24 LL 191975205 256
80.209.159.0/24 ICUK Computing Services Limited 256
80.247.216.0/24 CEF (W) SA 256
82.39.142.0/24 VersaTek 256
91.233.33.0/24 Metropolitan Networks UK Ltd 256
138.124.128.0/24 ICUK Computing Services Limited 256
138.124.134.0/24 DN9 3GA 256
138.124.135.0/24 LL user 377387195 256
138.124.136.0/24 BB 33311135635 256
138.124.137.0/24 BB 52205100875 256
138.124.138.0/24 LL user 497791650 256
138.124.142.0/24 LL user 3274131897 256
181.215.32.0/24 No Metric Limited 256
185.32.55.0/24 Lantec Manchester DC 1 256
185.132.52.0/24 NWIMS Communications 256
185.137.240.0/24 ICUK Global CDN Platform 256
185.145.152.0/24 ICUK Computing Services Limited 256
185.152.2.0/24 Pine Media Ltd 256
185.234.255.0/24 Network 79 Ltd 256
185.243.62.0/24 Multidata Ltd 256
185.243.63.0/24 Multidata Ltd 256
185.253.88.0/24 SDC Hosting and Support Ltd 256
188.211.249.0/24 Select Comms LTD 256
188.240.160.0/24 ICUK Computing Services Limited 256
188.240.172.0/24 ICUK Computing Services Limited 256
188.240.173.0/24 ICUK Computing Services Limited 256
188.240.191.0/24 ICUK Computing Services Limited 256
193.161.9.0/24 HP Networks Ltd 256
193.161.10.0/24 HP Networks Ltd 256
193.187.0.0/24 Select Comms LTD 256

Netblock Company
2a00:b900::/32 ICUK Computing Services Limited
2a00:b900:2::/48 ICUK Computing Services Limited
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WHOIS Details

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                                                ASHandle:       AS51561
                                                OrgID:          AS51561
                                                ASName:         AS51561
                                                ASNumber:       AS51561
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 11,004 domain names hosted across 352 IP addresses on this ASN.

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IP Address Domain Domains on this IP
188.240.191.168 ██████████ 951
188.240.191.171 ██████████ 856
188.240.191.163 ██████████ 853
188.240.191.161 ██████████ 805
188.240.191.160 ██████████ 793
188.240.191.166 ██████████ 771
188.240.191.169 ██████████ 755
188.240.191.164 ██████████ 752
188.240.191.165 ██████████ 728
188.240.191.167 ██████████ 724

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Hosted Domains API & Database

Peers

There are 121 peers for this ASN.

Peers Name
AS1031 PEER 1031 LLC
AS1239 Cogent Communications, LLC
AS12552 GlobalConnect AB
AS1267 WIND TRE S.P.A.
AS12713 OTEGlobe
AS12779 IT.Gate S.p.A.
AS12969 Vodafone Iceland
AS132337 Axclusive
AS13237 euNetworks GmbH
AS13335 Cloudflare, Inc.
AS137409 GSL Networks Pty LTD
AS14537 Continent 8 LLC
AS14630 Invesco Group Services, Inc.
AS14840 BR.Digital Telecom
AS15412 Flag Telecom UK Limited
AS15802 Emirates Integrated Telecommunications Company PJSC
AS16347 ADISTA SAS
AS16552 Tiggee LLC
AS174 Cogent Communications, LLC
AS17639 Converge ICT Solutions Inc.
AS18106 Viewqwest Pte Ltd
AS1828 Unitas Global
AS198150 SIACOM JSC
AS199204 Webmate Internet Services Ltd.
AS201060 SNETTERTON TELECOM LIMITED
AS20562 Broadband Hosting B.V.
AS20764 CJSC RASCOM
AS207841 Inferno Communications Ltd
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS213241 TECHIT.BE SRL
AS215638 Cilix Limited
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
AS24940 Hetzner Online GmbH
AS25091 IP-Max SA
AS25160 Vorboss Limited
AS25369 Hydra Communications Ltd
AS263152 MIGO TELECOM
AS271253 LINK BRASIL TELECOMUNICACOES LTDA
AS28792 Public Internet Ltd
AS29049 Delta Telecom Ltd
AS29075 IELO Main Network
AS2914 NTT America, Inc.
AS30844 Liquid Telecommunications Ltd
AS31122 Digiweb ltd
AS31500 Global Network Management Inc
AS3170 VeloxServ Communications Ltd
AS31742 Sotaconnect Network
AS3214 xTom GmbH
AS3216 PJSC Vimpelcom
AS32590 Valve Corporation
AS3356 Level 3 Parent, LLC
AS33891 Core-Backbone GmbH
AS34177 Celeste SAS
AS34288 Kantonsschule Zug
AS34549 meerfarbig GmbH & Co. KG
AS34927 iFog GmbH
AS35266 EX Networks Limited
AS35280 F5 Networks SARL
AS36236 NetActuate, Inc
AS36994 Vodacom
AS37100 SEACOM Limited
AS37282 Main one Cable Company Nigeria Limited
AS3741 Dimension Data
AS37468 Angola Cables
AS37497 Network Platforms (PTY) LTD
AS37662 West Indian Ocean Cable Company
AS37680 Cool Ideas Service Provider (Pty) Ltd
AS37721 Virtual Technologies & Solutions
AS38880 Micron21 Datacentre Pty Ltd
AS39120 Convergenze S.p.A.
AS39122 Blacknight Internet Solutions Limited
AS39351 31173 Services AB
AS398465 Rackdog, LLC
AS41327 Fiber Telecom S.p.A.
AS41811 CONVERGENCE (GROUP NETWORKS) LIMITED
AS42473 Anexia Cloud Solutions GmbH
AS43733 Viva Armenia CJSC
AS4455 IX Reach Ltd
AS45352 IP ServerOne Solutions Sdn Bhd
AS47957 Worldline IGSA SA
AS48070 DSM (GB) Limited
AS48185 team.blue NV
AS48362 Stadtwerke Feldkirch
AS49544 i3D.net B.V
AS50300 CustodianDC Limited
AS50304 Blix Solutions AS
AS51185 MainStreaming SpA
AS52075 Wifirst S.A.S.
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S.
AS53062 ALT | GRUPO BRASIL TECPAR
AS5405 Inter.link GmbH
AS5413 Wavenet Limited
AS56665 Proximus Luxembourg S.A.
AS5713 Telkom SA Ltd.
AS58511 Anycast Global Backbone
AS60171 AFR-IX TELECOM S.A.
AS61049 Exascale Ltd
AS61568 ALOO TELECOM - FSF TECNOLOGIA SA
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ASN API & Database

Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS13335 Cloudflare, Inc.
AS174 Cogent Communications, LLC
AS2914 NTT America, Inc.
AS3356 Level 3 Parent, LLC
AS6939 Hurricane Electric LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Downstreams

There are 2 downstreams for this ASN.

Downstreams Name
AS199204 Webmate Internet Services Ltd.
AS201060 SNETTERTON TELECOM LIMITED
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ASN API & Database

Pingable IPs

278 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
46.102.193.72 AS51561 ICUK Computing Services Limited 0.69ms from Erith, GB
46.33.148.194 AS51561 ICUK Computing Services Limited 3.86ms from London, GB
2a00:b900:10a9:1::9 AS51561 ICUK Computing Services Limited 8.03ms from London, GB
188.240.168.122 AS51561 ICUK Computing Services Limited 0.55ms from London, GB
185.243.62.201 AS51561 ICUK Computing Services Limited 0.73ms from London, GB
46.102.215.50 AS51561 ICUK Computing Services Limited 0.45ms from London, GB
80.209.130.194 AS51561 ICUK Computing Services Limited 2.23ms from London, GB
80.209.171.14 AS51561 ICUK Computing Services Limited 0.44ms from London, GB
193.161.9.170 AS51561 ICUK Computing Services Limited 0.64ms from London, GB
185.140.17.64 AS51561 ICUK Computing Services Limited 1.66ms from London, GB
5.254.163.246 AS51561 ICUK Computing Services Limited 9.83ms from London, GB
46.102.197.150 AS51561 ICUK Computing Services Limited 0.44ms from London, GB
193.187.0.1 AS51561 ICUK Computing Services Limited 0.60ms from London, GB
2a00:b900:12e7:4:2ef0:5dff:fe06:c197 AS51561 ICUK Computing Services Limited 18.25ms from Erith, GB
46.33.159.158 AS51561 ICUK Computing Services Limited 0.43ms from London, GB
138.124.129.203 AS51561 ICUK Computing Services Limited 2.78ms from London, GB
80.209.129.2 AS51561 ICUK Computing Services Limited 0.33ms from London, GB
80.209.133.178 AS51561 ICUK Computing Services Limited 2.86ms from London, GB
82.39.142.137 AS51561 ICUK Computing Services Limited 6.17ms from London, GB
138.124.135.172 AS51561 ICUK Computing Services Limited 0.48ms from London, GB
46.102.204.33 AS51561 ICUK Computing Services Limited 2.37ms from London, GB
46.33.139.46 AS51561 ICUK Computing Services Limited 2.35ms from London, GB
80.209.142.146 AS51561 ICUK Computing Services Limited 0.47ms from London, GB
2a00:b900:122a:1::1 AS51561 ICUK Computing Services Limited 15.24ms from London, GB
80.95.204.225 AS51561 ICUK Computing Services Limited 0.43ms from London, GB

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
94.56.51.185 AS5384 Emirates Internet 2.40ms from Al Fujairah City, AE
104.224.4.9 AS14480 County of Orangeburg 11.64ms from Atlanta, US
93.121.197.185 AS21351 Canal + Telecom SAS 1.41ms from Baie-Mahault, GP
54.70.95.57 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
59.145.168.89 AS9498 BHARTI Airtel Ltd. 3.05ms from Chennai, IN
93.160.135.153 AS3292 TDC Holding A/S 2.53ms from Copenhagen, DK
2.202.73.169 AS3209 Vodafone GmbH 5.53ms from Duesseldorf, DE
91.8.197.185 AS3320 Deutsche Telekom AG 1.61ms from Hamburg, DE
98.39.150.89 AS7922 Comcast Cable Communications, LLC 4.62ms from Houston, US
222.124.12.73 AS7713 PT Telekomunikasi Indonesia 0.72ms from Jakarta, ID
2.218.40.41 AS5607 Sky UK Limited 11.27ms from London, GB
72.111.29.89 AS6167 Verizon Business 17.55ms from Los Angeles, US
181.143.14.233 AS13489 UNE EPM TELECOMUNICACIONES S.A. 0.68ms from Medellin, CO
49.190.23.249 AS4804 Microplex PTY LTD 2.44ms from Melbourne, AU
2.228.175.121 AS12874 Fastweb SpA 1.21ms from Milan, IT
201.217.155.153 AS6057 Administracion Nacional de Telecomunicaciones 1.20ms from Montevideo, UY
184.175.58.169 AS5645 TekSavvy Solutions, Inc. 16.03ms from Montreal, CA
112.1.30.153 AS56046 China Mobile communications corporation 4.10ms from Nanjing, CN
79.219.230.233 AS3320 Deutsche Telekom AG 2.82ms from Nuernberg, DE
174.135.189.233 AS33363 Charter Communications, Inc 11.98ms from Orlando, US
211.15.218.137 AS2516 KDDI CORPORATION 1.56ms from Osaka, JP
217.109.47.233 AS3215 Orange S.A. 14.43ms from Paris, FR
85.39.243.89 AS3269 Telecom Italia S.p.A. 8.77ms from Rome, IT
73.93.234.41 AS7922 Comcast Cable Communications, LLC 5.67ms from San Jose, US
183.238.13.137 AS9808 China Mobile Communications Group Co., Ltd. 5.98ms from Shenzhen, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f3 -m7 205.157.169.21
traceroute to 205.157.169.21 (205.157.169.21): 7 hops max, 52 byte packets
3 [AS201011] 81.95.9.44 0.548 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS51561 at robtex.

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