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 62,464
IPv6 addresses 79,229,371,440,083,952,222,718,656,512
ASN type ISP
Registry ripe
Allocated 15 years ago on Sep 28, 2010
Updated 23 days 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
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
45.145.86.0/23 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
188.240.191.163 ██████████ 986
188.240.191.161 ██████████ 953
188.240.191.168 ██████████ 951
188.240.191.160 ██████████ 935
188.240.191.171 ██████████ 871
188.240.191.165 ██████████ 737
188.240.191.164 ██████████ 732
188.240.191.167 ██████████ 722
188.240.191.169 ██████████ 717
188.240.191.166 ███████ 714

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Peers

There are 115 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
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
AS22356 Durand do Brasil Ltda
AS24482 SG.GS
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
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
AS3549 Level 3 Parent, LLC
AS36236 NetActuate, Inc
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
AS44324 MoeDove LLC
AS4455 IX Reach Ltd
AS45352 IP ServerOne Solutions Sdn Bhd
AS4651 National Telecom Public Company Limited
AS4775 Globe Telecoms
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
AS52075 Wifirst S.A.S.
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S.
AS53062 ALT | GRUPO BRASIL TECPAR
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
AS61573 IP TELECOM
AS6204 INTERKVM HOST SRL
AS62167 Tismi BV
AS62275 NHM - S.R.L.
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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
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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

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

IP Address ASN Details
80.209.172.238 AS51561 ICUK Computing Services Limited 0.44ms from London, GB
46.33.136.76 AS51561 ICUK Computing Services Limited 1.80ms from London, GB
5.133.168.1 AS51561 ICUK Computing Services Limited 6.64ms from London, GB
80.209.162.241 AS51561 ICUK Computing Services Limited 0.42ms from London, GB
80.209.176.52 AS51561 ICUK Computing Services Limited 0.33ms from London, GB
138.124.129.203 AS51561 ICUK Computing Services Limited 2.52ms from London, GB
80.209.134.145 AS51561 ICUK Computing Services Limited 0.41ms from London, GB
80.209.142.177 AS51561 ICUK Computing Services Limited 0.43ms from London, GB
2a00:b900:1004:0:b6fc:7dff:fec1:3bb7 AS51561 ICUK Computing Services Limited 7.48ms from London, GB
185.243.63.9 AS51561 ICUK Computing Services Limited 0.59ms from London, GB
138.124.142.26 AS51561 ICUK Computing Services Limited 0.44ms from London, GB
46.102.204.33 AS51561 ICUK Computing Services Limited 2.46ms from London, GB
80.209.169.192 AS51561 ICUK Computing Services Limited 2.09ms from London, GB
89.107.26.246 AS51561 ICUK Computing Services Limited 14.53ms from London, GB
46.33.137.183 AS51561 ICUK Computing Services Limited 2.49ms from London, GB
185.2.236.162 AS51561 ICUK Computing Services Limited 2.44ms from London, GB
2a00:b900:129d::1 AS51561 ICUK Computing Services Limited 8.97ms from London, GB
80.209.179.214 AS51561 ICUK Computing Services Limited 0.47ms from London, GB
188.240.174.65 AS51561 ICUK Computing Services Limited 0.64ms from London, GB
46.102.206.168 AS51561 ICUK Computing Services Limited 0.38ms from London, GB
46.102.220.8 AS51561 ICUK Computing Services Limited 2.94ms from London, GB
80.209.149.129 AS51561 ICUK Computing Services Limited 8.58ms from London, GB
188.240.170.233 AS51561 ICUK Computing Services Limited 0.60ms from London, GB
185.145.155.20 AS51561 ICUK Computing Services Limited 0.52ms from London, GB
188.240.183.131 AS51561 ICUK Computing Services Limited 2.56ms 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
95.97.113.121 AS33915 Vodafone Libertel B.V. 4.95ms from Amsterdam, NL
199.80.10.137 AS396440 Auburn University at Montgomery 5.99ms from Atlanta, US
24.37.91.249 AS5769 Videotron Ltee 4.48ms from Beauharnois, CA
84.195.62.25 AS6848 Telenet BV 6.62ms from Brussels, BE
190.183.146.57 AS20207 Gigared S.A. 0.14ms from Buenos Aires, AR
68.146.10.57 AS6327 Shaw Communications 4.83ms from Calgary, CA
183.64.104.105 AS4134 CHINANET-BACKBONE 0.96ms from Chongqing, CN
62.246.87.41 AS12312 ecotel communication ag 6.02ms from Frankfurt am Main, DE
186.68.50.137 AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC) 4.34ms from Guayaquil, EC
34.88.152.137 AS396982 Google LLC 0.12ms from Hamina, FI
63.218.0.105 AS3491 PCCW Global, Inc. 0.90ms from Hong Kong, HK
213.74.19.25 AS34984 Superonline Iletisim Hizmetleri A.S. 1.81ms from Istanbul, TR
165.65.43.73 AS25160 Vorboss Limited 0.61ms from London, GB
192.41.113.185 AS786 Jisc Services Limited 9.09ms from London, GB
193.62.217.89 AS786 Jisc Services Limited 0.71ms from London, GB
12.45.218.41 AS7018 AT&T Enterprises, LLC 5.67ms from Miami, US
61.132.41.137 AS4134 CHINANET-BACKBONE 3.02ms from Nanjing, CN
73.37.117.9 AS7922 Comcast Cable Communications, LLC 6.09ms from Portland, US
63.78.215.105 AS36103 Central Utah Telephone, Inc. 0.59ms from Salt Lake City, US
211.38.33.169 AS4766 Korea Telecom 1.25ms from Seoul, KR
110.12.83.121 AS9318 SK Broadband Co Ltd 1.28ms from Seoul, KR
203.201.171.201 AS38778 PT. Dutakom Wibawa Putra 0.57ms from Surabaya, ID
219.85.80.217 AS18182 Sony Network Taiwan Limited 0.78ms from Taipei, TW
210.153.231.57 AS2514 NTT PC Communications, Inc. 5.80ms from Tokyo, JP
23.64.239.105 AS16625 Akamai Technologies, Inc. 0.22ms from Warsaw, PL

Traceroute

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

$
traceroute -a -n -q1 46.33.137.172
traceroute to 46.33.137.172 (46.33.137.172): 64 hops max, 52 byte packets
1 [AS142382] 103.172.18.1 1236.925 ms
2 *
4 *
5 *
6 *
7 [AS51561] 46.33.137.172 194.066 ms
Measurement taken from IPinfo ProbeNet in Denpasar, ID
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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