203.91.120.0/22 no ROA
Announced by AS4538 China Education and Research Network Center.
Origin
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS4538 China Education and Research Network Center | no ROA | 47 | 244824538 | 2026-09-18 | 2026-10-15 |
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
- 203.91.120.0/21
- RIR
- APNIC
- Country
- 🇨🇳 CN
- Status
- allocated
- Allocated
- 2006-03-01
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 203.91.120.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 47 | 244824538 | 2026-09-18 |
More specific routes
2 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 203.91.120.0/23 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
| 203.91.122.0/23 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |