AS21054 UK-NATWEST-AS21054 Natwest Markets PLC
🇬🇧Org handle: ORG-TRBO2-RIPE
Edinburgh
RIPE NCCallocated
Announced Prefixes (BGP)
15total
15 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)65,536
Announced (BGP)135,424
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Announced Prefixes
(BGP)15|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
155.136.0.0/16MOAS | No ROA | Other IRRRIPE | 2026-10-11 |
155.136.0.0/17MOAS | No ROA | - | 2026-10-11 |
| No ROA | RIPE | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
| No ROA | Other IRR | 2026-10-11 | |
155.136.128.0/17MOAS | No ROA | - | 2026-10-11 |
155.136.144.0/24MOAS | No ROA | Other IRRRIPE | 2026-10-11 |
155.136.146.0/24MOAS | No ROA | Other IRRRIPE | 2026-10-11 |
1-10 of 15
1 / 2
Allocated Prefixes
(RIR)1Prefix | Country | RIR | Status |
|---|---|---|---|
| 155.136.0.0/16 | 🇬🇧 GB | RIPENCC | assigned |
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 AS21054 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/21054Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/21054" | jq