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
6
transit providers observed
Peers
15
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
Announcement history
One point per day, recorded at each table import
IPv4
IPv6
Recorded changes
New prefixes and origin changes seen on the live stream
| When | Change | Prefix | Origin | Path |
|---|---|---|---|---|
| 2026-10-20 16:02:36Z | origin change | 194.15.37.0/24 | AS35575 → AS51561 | 2023655067317451561 |
| 2026-10-20 16:02:35Z | origin change | 194.15.37.0/24 | AS51561 → AS35575 | 226521743356900235575 |
| 2026-10-20 16:02:07Z | origin change | 194.15.37.0/24 | AS35575 → AS51561 | 20205693951561 |
| 2026-10-20 16:02:06Z | origin change | 194.15.37.0/24 | AS51561 → AS35575 | 35493356900235575 |
| 2026-10-20 16:01:51Z | origin change | 194.15.37.0/24 | AS51561 → AS35575 | 14035773356900235575 |
| 2026-10-20 16:01:51Z | origin change | 194.15.37.0/24 | AS35575 → AS51561 | 46087575291451561 |
| 2026-10-20 16:01:48Z | origin change | 194.15.37.0/24 | AS35575 → AS51561 | 580573454951561 |