AS51561 ICUK Computing Services Limited Details

AS51561 — ICUK Computing Services Limited

AS Name

AS-ICUK

Country

United Kingdom (GB)

Website

interdns.co.uk

Number of IPv4

78,848

Number of IPv6

7.92 × 10²⁸

ASN type

ISP

Status

Allocated

Registry

RIPE

Allocated

September 28, 2010

Last updated

February 24, 2026

IP Ranges

69 IPv4 prefixes, 2 IPv6 prefixes

Prefix	Company	Number of IPs
2.56.84.0/22	ICUK Computing Services 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	ADSL MA	512
5.254.164.0/23	ADSL MA	512
37.235.43.0/24	Shetland Broadband LLP	256
45.93.112.0/22	ICUK Computing Services Limited	1,024
45.93.112.0/23	ICUK Computing Services Limited	512
45.145.86.0/23	Fluidity Connect Limited	512
46.33.128.0/19	Interdsl Network Structure	8,192
46.33.128.0/24	Interdsl Network Structure	256
46.33.130.0/24	Interdsl	256
46.33.156.0/24	ICUK Computing Services Limited	256
46.102.192.0/19	Interdsl	8,192
46.102.192.0/24	Interdsl	256
46.102.193.0/24	Interdsl	256
46.226.120.0/24	Agile ICT Ltd	256
80.95.192.0/20	ICUK Computing Services Limited	4,096
80.209.128.0/19	ICUK Computing Services Limited	8,192
80.209.128.0/24	ICUK Computing Services Limited	256
80.209.155.0/24	ICUK Computing Services Limited	256
80.209.159.0/24	ICUK Computing Services Limited	256
80.209.160.0/20	ICUK Computing Services Limited	4,096
80.209.176.0/21	LL 223675205	2,048
80.209.184.0/22	LL 10510198440	1,024
80.247.216.0/24	CEF (W) SA	256
82.39.142.0/24	VersaTek	256
89.107.24.0/22	CSD Communications Ltd	1,024
91.233.33.0/24	Metropolitan Networks UK Ltd	256
138.124.128.0/20	ICUK Computing Services Limited	4,096
138.124.128.0/24	ICUK Computing Services Limited	256
138.124.134.0/24	LL 3274131897	256
138.124.135.0/24	ICUK Computing Services Limited	256
138.124.136.0/24	ICUK Computing Services Limited	256
138.124.137.0/24	ICUK Computing Services Limited	256
138.124.138.0/24	LL 390375205	256
138.124.142.0/24	LL 4967133918	256
181.215.32.0/24	No Metric Limited	256
185.2.236.0/22	ICUK Computing Services Limited	1,024
185.32.55.0/24	David Tomlinson & Paul McAllion trading as Lantec Systems	256
185.35.148.0/22	ICUK Computing Services Limited	1,024
185.35.148.0/24	ICUK Computing Services Limited	256
185.35.149.0/24	Interdns Dedicated Servers	256
185.35.150.0/24	Interdns Dedicated Servers	256
185.35.151.0/24	Interdns Dedicated Servers	256
185.132.52.0/24	Mo's Operations GmbH	256
185.137.240.0/24	ICUK Global CDN Platform	256
185.140.16.0/23	ICUK Computing Services Limited	512
185.140.18.0/23	LL 573875205	512
185.145.152.0/22	LL 566678171	1,024
185.145.152.0/24	LL 566678171	256
185.152.2.0/24	Pine Media Ltd	256
185.201.208.0/22	CTR Communications Limited	1,024
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
188.240.160.0/19	ICUK Computing Services Limited	8,192
188.240.160.0/24	ICUK Computing Services Limited	256
188.240.172.0/24	Interdsl	256
188.240.173.0/24	Interdsl	256
188.240.191.0/24	Interdsl	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
205.157.160.0/19	ICUK Computing Services Limited	8,192
205.157.160.0/24	ICUK Computing Services Limited	256
217.22.12.0/24	Wave Mobile Ltd	256
2a00:b900::/32	ICUK Computing Services Limited	7.92 × 10²⁸
2a00:b900:2::/48	ICUK Computing Services Limited	1.21 × 10²⁴

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS51561

614 peers

AS42 AS835 AS917 AS1000 AS1031 AS1248 AS1267 AS1547 AS1820 AS1828 AS1921 AS2018 AS2484 AS2635 AS2818 AS2906 AS3213 AS3214 AS3216 AS3223 AS3327 AS3462 AS3741 AS3856 AS4004 AS4134 AS4455 AS4651 AS4657 AS4775 AS4800 AS4849 AS5378 AS5405 AS5459 AS5466 AS5482 AS5500 AS5503 AS5564 AS5631 AS5713 AS6057 AS6204 AS6206 AS6424 AS6507 AS6661 AS6677 AS6717 AS6866 AS6894 AS6939 AS7155 AS7195 AS7342 AS7552 AS7575 AS7642 AS7713 AS7979 AS8218 AS8262 AS8282 AS8301 AS8304 AS8309 AS8400 AS8422 AS8426 AS8452 AS8468 AS8529 AS8544 AS8560 AS8637 AS8674 AS8680 AS8681 AS8683 AS8757 AS8801 AS8851 AS8878 AS8902 AS8943 AS9050 AS9140 AS9145 AS9153 AS9354 AS9381 AS9498 AS9583 AS9930 AS10310 AS11260 AS12200 AS12390 AS12399 AS12440 AS12491 AS12496 AS12552 AS12703 AS12713 AS12741 AS12759 AS12779 AS12850 AS13002 AS13009 AS13122 AS13150 AS13208 AS13213 AS13237 AS13285 AS13360 AS13631 AS13896 AS14061 AS14127 AS14593 AS15389 AS15412 AS15510 AS15606 AS15654 AS15695 AS15766 AS15796 AS15802 AS15830 AS16082 AS16164 AS16247 AS16265 AS16276 AS16347 AS16353 AS16552 AS16637 AS16740 AS17088 AS17494 AS17557 AS17639 AS17978 AS18106 AS18283 AS19551 AS19711 AS20326 AS20473 AS20562 AS20596 AS20679 AS20681 AS20712 AS20764 AS20799 AS20804 AS20860 AS20940 AS21056 AS21099 AS21215 AS21267 AS21472 AS21859 AS22356 AS22697 AS23028 AS23161 AS23344 AS23576 AS23764 AS23889 AS24429 AS24482 AS24594 AS24916 AS24940 AS25091 AS25152 AS25160 AS25369 AS25460 AS25509 AS25577 AS28283 AS28458 AS28725 AS28757 AS28792 AS29006 AS29017 AS29075 AS29119 AS29452 AS29527 AS29606 AS29611 AS29668 AS29838 AS30081 AS30740 AS30844 AS31084 AS31122 AS31459 AS31472 AS31500 AS31515 AS31529 AS31638 AS31727 AS31742 AS32437 AS32787 AS33353 AS33425 AS33763 AS33891 AS33920 AS34066 AS34087 AS34119 AS34177 AS34224 AS34245 AS34270 AS34288 AS34347 AS34428 AS34442 AS34549 AS34655 AS34746 AS34927 AS35071 AS35180 AS35228 AS35280 AS35297 AS35313 AS35399 AS35551 AS35574 AS35575 AS35691 AS35793 AS35826 AS35834 AS36236 AS36351 AS36874 AS36916 AS36944 AS36994 AS37054 AS37100 AS37119 AS37148 AS37282 AS37468 AS37497 AS37613 AS37645 AS37662 AS37678 AS37680 AS37721 AS38158 AS38182 AS38719 AS38880 AS39063 AS39122 AS39175 AS39202 AS39208 AS39351 AS39356 AS39498 AS39505 AS39522 AS39537 AS39572 AS39602 AS39737 AS39875 AS40339 AS40627 AS40934 AS41000 AS41107 AS41230 AS41327 AS41354 AS41364 AS41379 AS41484 AS41495 AS41678 AS41695 AS41811 AS42004 AS42010 AS42156 AS42228 AS42295 AS42344 AS42473 AS42611 AS42689 AS42831 AS42947 AS43256 AS43519 AS43545 AS43872 AS44123 AS44356 AS44684 AS44735 AS44749 AS44965 AS45014 AS45352 AS45474 AS45701 AS47480 AS47631 AS47638 AS47720 AS47957 AS47998 AS48070 AS48101 AS48185 AS48237 AS48266 AS48294 AS48305 AS48362 AS48519 AS48688 AS48825 AS48945 AS48954 AS49158 AS49375 AS49415 AS49425 AS49490 AS49544 AS49572 AS49600 AS49915 AS50023 AS50293 AS50300 AS50304 AS50316 AS51043 AS51055 AS51154 AS51263 AS51265 AS51409 AS51468 AS51553 AS3170 AS5413 AS8455 AS9044 AS12969 AS14537 AS14630 AS32590 AS35266 AS39120 AS51185 AS51823 AS51918 AS51945 AS52025 AS52041 AS52075 AS53334 AS54113 AS54309 AS54994 AS55195 AS55256 AS55329 AS55685 AS55818 AS55850 AS56329 AS56474 AS56478 AS56595 AS56665 AS56704 AS56990 AS57099 AS57344 AS57356 AS57463 AS57653 AS57793 AS57907 AS57976 AS58188 AS58273 AS58580 AS58715 AS58807 AS59395 AS59439 AS59455 AS59550 AS59624 AS59659 AS59778 AS59829 AS59832 AS59933 AS60022 AS60171 AS60187 AS60255 AS60377 AS60439 AS60670 AS60793 AS60800 AS60822 AS60868 AS61012 AS61049 AS61124 AS61215 AS61231 AS61323 AS61337 AS61373 AS61573 AS61955 AS62044 AS62163 AS62172 AS62217 AS62227 AS62240 AS62244 AS62275 AS62417 AS62663 AS62856 AS62955 AS63399 AS63741 AS63927 AS63949 AS64049 AS131958 AS132876 AS136106 AS138915 AS139057 AS139341 AS139901 AS150329 AS196881 AS197000 AS197440 AS197669 AS197790 AS197898 AS197981 AS198554 AS198651 AS198690 AS198736 AS198781 AS198895 AS198930 AS199121 AS199335 AS199452 AS199468 AS199670 AS199713 AS199716 AS199775 AS199995 AS200070 AS200612 AS200700 AS201261 AS201277 AS201838 AS201864 AS201933 AS202053 AS202076 AS202196 AS202282 AS202596 AS203372 AS203416 AS203421 AS203462 AS203568 AS203582 AS203724 AS203851 AS204024 AS204089 AS204208 AS204220 AS204558 AS204598 AS205098 AS205111 AS205272 AS205275 AS205479 AS205847 AS205892 AS205975 AS206014 AS206067 AS206245 AS206347 AS206483 AS206530 AS206626 AS206735 AS206934 AS206963 AS206999 AS207044 AS207113 AS207310 AS207456 AS207594 AS207652 AS207784 AS207995 AS208414 AS208621 AS208636 AS208802 AS208808 AS209326 AS209505 AS209768 AS210062 AS210258 AS210619 AS210627 AS210805 AS210892 AS210893 AS211029 AS211175 AS211389 AS211501 AS212109 AS212396 AS212655 AS212683 AS212694 AS212980 AS213054 AS213513 AS213671 AS214073 AS214271 AS214670 AS215248 AS215915 AS215981 AS262725 AS263903 AS264997 AS266435 AS327814 AS328112 AS328366 AS328748 AS329215 AS395505 AS396986 AS399486 AS399728 AS51907 AS58453 AS58511 AS61568 AS62167 AS132337 AS137409 AS207841 AS212483 AS262355 AS263152 AS271253 AS398465

AS51561 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS51561

5 upstreams

AS174 AS2914 AS3356 AS13335 AS215638

AS51561 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS51561 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS51561

2 downstreams

AS199204 AS201060

AS51561 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

Autonomous System details for AS51561