AS51561 ICUK Computing Services Limited 🇬🇧 GB
Announcing 74 prefixes, seen at the RIS collectors.
IPv4 prefixes
72
80,128 (313 × /24)
IPv6 prefixes
2
1 × /32
Upstreams
5
transit providers observed
Peers
16
settlement-free adjacencies
Downstreams
2
transit customers observed
Customer cone
3
ASes reachable through it
Registry and operator data
- AS number
- AS51561
- Name
- ICUK Computing Services Limited
- Organisation
- ICUK Computing Services Ltd
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 2010-09-28
- Network type
- NSP
- Scope
- Europe
- Peering policy
- Open
- IRR as-set
- AS-ICUK
- Website
- https://www.icuk.net/
- PeeringDB
- net/8468
- Exchanges
- 3
- Facilities
- 3
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS3356 Lumen (Level 3) | 🇺🇸 US | 72,558 | 2,067 | 462 | CAIDA |
| AS174 Cogent Communications, LLC | 🇺🇸 US | 67,299 | 3,739 | 674 | CAIDA |
| AS2914 NTT America, Inc. | 🇺🇸 US | 58,846 | 1,678 | 363 | CAIDA |
| AS9002 RETN Limited | 🇬🇧 GB | 55,079 | 14 | 1 | inferred |
| AS13335 Cloudflare, Inc. | 🇺🇸 US | 22,920 | 2,692 | 558 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS6939 Hurricane Electric LLC | 🇺🇸 US | 56,760 | 237 | 385 | CAIDA |
| AS4657 StarHub Ltd | 🇸🇬 SG | 38,265 | 208 | 45 | CAIDA |
| AS33891 Core-Backbone GmbH | 🇩🇪 DE | 30,210 | 1 | 56 | CAIDA |
| AS3216 PJSC Vimpelcom | 🇷🇺 RU | 26,115 | 591 | 45 | CAIDA |
| AS37721 Virtual Technologies & Solutions | 🇧🇫 BF | 23,905 | 64 | 45 | CAIDA |
| AS24482 SG.GS | 🇸🇬 SG | 23,712 | 45 | 60 | CAIDA |
| AS34549 meerfarbig GmbH & Co. KG | 🇩🇪 DE | 20,052 | 47 | 139 | CAIDA |
| AS31500 Global Network Management Inc | 🇦🇬 AG | 1,601 | 40 | 1 | CAIDA |
| AS7575 Australian Academic and Research Network (AARNet) | 🇦🇺 AU | 579 | 201 | 45 | CAIDA |
| AS17639 Converge ICT Solutions Inc. | 🇵🇠PH | 239 | 575 | 46 | CAIDA |
| AS25091 IP-Max SA | 🇨🇠CH | 179 | 25 | 1 | CAIDA |
| AS12779 IT.Gate S.p.A. | 🇮🇹 IT | 75 | 25 | 45 | CAIDA |
| AS50304 Blix Solutions AS | 🇳🇴 NO | 33 | 97 | 91 | CAIDA |
| AS48362 Stadtwerke Feldkirch | 🇦🇹 AT | 17 | 7 | 47 | CAIDA |
| AS48185 team.blue NV | 🇧🇪 BE | 14 | 1 | 60 | CAIDA |
| AS50300 CustodianDC Limited | 🇬🇧 GB | 10 | 39 | 60 | CAIDA |
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS199204 Webmate Internet Services Ltd. | 🇬🇧 GB | 0 | 1 | 42 | CAIDA |
| AS201060 SNETTERTON TELECOM LIMITED | 🇬🇧 GB | 0 | 4 | 33 | CAIDA |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.