101.5.0.0/16 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 | 2026-10-14 |
| AS24348 CERNET2 IX at Tsinghua University | no ROA | 2 | 38229244902448923911453824348 | 2026-09-18 | 2026-10-14 |
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
- 101.4.0.0/14
- RIR
- APNIC
- Country
- 🇨🇳 CN
- Status
- allocated
- Allocated
- 2010-12-09
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 101.4.0.0/14 v4 | AS4538 China Education and Research Network Center | no ROA | 48 | 244824538 | 2026-09-18 |
More specific routes
6 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 101.5.0.0/17 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
| 101.5.24.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
| 101.5.40.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
| 101.5.128.0/17 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
| 101.5.128.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 42 | 2026-09-18 |
| 101.5.136.0/21 v4 | AS4538 China Education and Research Network Center | no ROA | 4 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-14 18:06:45Z | origin change | AS24348 → AS4538 | 5572046354538 |
| 2026-10-14 00:07:32Z | origin change | AS4538 → AS24348 | 46087575244902448923911453824348 |
| 2026-10-11 03:05:41Z | origin change | AS4538 → AS24348 | 38229244902448923911453824348 |
| 2026-10-09 13:21:20Z | origin change | AS24348 → AS4538 | 1763946354538 |
| 2026-10-08 22:34:55Z | origin change | AS4538 → AS24348 | 46087575244902448923911453824348 |
| 2026-10-08 17:08:08Z | origin change | AS24348 → AS4538 | 5572099304538 |
| 2026-10-08 11:59:12Z | origin change | AS4538 → AS24348 | 46087575244902448923911453824348 |
| 2026-10-03 09:14:04Z | origin change | AS24348 → AS4538 | 37721693946354538 |
| 2026-10-02 11:35:07Z | origin change | AS4538 → AS24348 | 46087575244902448923911453824348 |
| 2026-10-02 07:43:34Z | origin change | AS24348 → AS4538 | 333311032096545384538 |
| 2026-10-01 17:00:25Z | origin change | AS4538 → AS24348 | 333311032096523911453824348 |