AS51159 THINKSYSTEMSUK-ASN CT1 Technologies Ltd
🇬🇧Org handle: ORG-CTL96-RIPE
RIPE NCCallocated
Announced Prefixes (BGP)
5total
5 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)2,304
Announced (BGP)2,304
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)0
Announced Prefixes
(BGP)5|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-10 | |
| Valid | Other IRRRIPE | 2026-10-10 | |
| Valid | RIPE | 2026-10-10 | |
| Valid | RIPE | 2026-10-10 | |
| Valid | RIPE | 2026-10-10 |
Allocated Prefixes
(RIR)6Prefix | Country | RIR | Status |
|---|---|---|---|
| 91.142.134.0/24 | 🇬🇧 GB | RIPENCC | assigned |
| 91.228.115.0/24 | 🇬🇧 GB | RIPENCC | assigned |
| 91.239.124.0/23 | 🇬🇧 GB | RIPENCC | assigned |
| 185.62.84.0/22 | 🇬🇧 GB | RIPENCC | allocated |
| 194.187.252.0/24 | 🇬🇧 GB | RIPENCC | allocated |
| 2a02:55c0::/32 | 🇬🇧 GB | RIPENCC | allocated |
All 5 announced prefixes of AS51159 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS51159 hands its own prefixes to: transit providers, or peers at an exchange.
- AS60800NHL AS1 Netwise Hosting5
Transfer History
Registry transfers of AS51159 between organisations.
- AS51159Transfer ·
- AS51159Transfer ·
ASPA
No ASPA
Abuse Contact
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS51159 should publish an ASPA object
- IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/51159Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/51159" | jq