222.205.0.0/16 no ROA MOAS
Announced by 2 different origins, which is either a deliberate multi-origin setup or a hijack.
This prefix is announced by more than one AS. Compare how many collector
peers see each origin below: a hijack is usually visible as a second
origin seen by far fewer peers than the legitimate one.
Origins
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS4538 China Education and Research Network Center | no ROA | 14 | 244824538 | 2026-09-18 | 2026-09-23 |
| AS24364 CERNET2 IX at Shanghai Jiaotong University | no ROA | 2 | 3822923855766023911453824364 | 2026-09-18 | 2026-09-23 |
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
- 222.204.0.0/15
- RIR
- APNIC
- Country
- 🇨🇳 CN
- Status
- allocated
- Allocated
- 2004-07-16
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 222.192.0.0/12 v4 | AS4538 China Education and Research Network Center | no ROA | 48 | 244824538 | 2026-09-18 |
More specific routes
4 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 222.205.0.0/17 v4 | AS4538 China Education and Research Network Center | no ROA | 46 | 2026-09-18 |
| 222.205.120.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 1 | 2026-09-18 |
| 222.205.160.0/19 v4 | AS4538 China Education and Research Network Center | no ROA | 1 | 2026-09-18 |
| 222.205.192.0/18 v4 | AS4538 China Education and Research Network Center | no ROA | 1 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-09-22 11:29:46Z | origin change | AS24364 → AS4538 | 5572099304538 |
| 2026-09-22 11:24:50Z | origin change | AS4538 → AS24364 | 46087575244902448923911453824364 |
| 2026-09-22 11:16:58Z | origin change | AS24364 → AS4538 | 2950415935495591583015412930446354538 |
| 2026-09-22 10:55:39Z | origin change | AS4538 → AS24364 | 46087575244902448923911453824364 |
| 2026-09-21 12:35:44Z | origin change | AS24364 → AS4538 | 496732076483594538 |
| 2026-09-21 08:47:28Z | origin change | AS4538 → AS24364 | 4608757511537766023911453824364 |
| 2026-09-18 08:32:48Z | origin change | AS24364 → AS4538 | 333311032096545384538 |