155.136.128.0/17 no ROA
Announced by AS21301 Natwest Markets PLC.
Origin
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS21301 Natwest Markets PLC | no ROA | 43 | 3278721301 | 2026-10-03 | 2026-10-05 |
RPKI
No ROA covers this prefix
No ROA covers this prefix, so origin validation returns "unknown". That is not a fault; most of the table is still unsigned.
Registry
Who this address space is delegated to, regardless of whether it is routed
- Delegated block
- 155.136.0.0/16
- RIR
- RIPENCC
- Country
- 🇬🇧 GB
- Status
- assigned
- Allocated
- 1991-11-08
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 155.136.0.0/16 v4 | AS21054 Natwest Markets PLC | no ROA | 21 | 37721127321054 | 2026-10-04 |
| 155.136.0.0/16 v4 | AS21301 Natwest Markets PLC | no ROA | 20 | 50304285621301 | 2026-10-03 |
More specific routes
18 announced prefixes inside this one
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-05 22:27:11Z | origin change | AS21301 → AS21054 | 3549335612993278721054 |
| 2026-10-05 22:27:10Z | origin change | AS21054 → AS21301 | 5805718363278721301 |
| 2026-10-05 22:27:09Z | origin change | AS21054 → AS21301 | 49432483623278721301 |
| 2026-10-05 22:26:17Z | origin change | AS21301 → AS21054 | 226523278721054 |
| 2026-10-03 00:48:55Z | origin change | AS21054 → AS21301 | 176393278721301 |