AS21301 Natwest Markets PLC 🇬🇧 GB
Announcing 15 prefixes, seen at the RIS collectors.
IPv4 prefixes
15
135,424 (529 × /24)
IPv6 prefixes
0
-
Upstreams
3
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS21301
- Name
- Natwest Markets PLC
- Organisation
- Natwest Markets PLC
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 2001-10-24
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
15 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 155.136.0.0/16 v4 | no ROA | 23 | 50304285621301 | 2026-10-03 |
| 155.136.0.0/17 v4 | no ROA | 1 | 21324190023278721301 | 2026-10-03 |
| 155.136.56.0/22 v4 | no ROA | 42 | 37721127321301 | 2026-09-18 |
| 155.136.56.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.57.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.58.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.59.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.128.0/17 v4 | no ROA | 1 | 21324190023278721301 | 2026-10-03 |
| 155.136.144.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.146.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.151.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.200.0/23 v4 | no ROA | 31 | 37721127321301 | 2026-10-02 |
| 155.136.200.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.201.0/24 v4 | no ROA | 44 | 3278721301 | 2026-09-18 |
| 155.136.202.0/23 v4 | no ROA | 29 | 37721127321301 | 2026-09-18 |