38.211.28.0/22 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 |
|---|---|---|---|---|---|
| AS174 Cogent Communications, LLC | no ROA | 38 | 34549174 | 2026-09-18 | 2026-09-20 |
| AS263016 NDX Net Servicos de Informatica Ltda. | no ROA | 4 | 24482267470263016 | 2026-09-18 | 2026-09-20 |
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
- 38.0.0.0/8
- RIR
- ARIN
- Country
- 🇺🇸 US
- Status
- allocated
- Allocated
- 1991-04-16
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 38.0.0.0/8 v4 | AS174 Cogent Communications, LLC | no ROA | 42 | 34549174 | 2026-09-18 |
More specific routes
4 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 38.211.28.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 41 | 2026-09-18 |
| 38.211.29.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 41 | 2026-09-18 |
| 38.211.30.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 41 | 2026-09-18 |
| 38.211.31.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 41 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-09-20 07:13:39Z | origin change | AS174 → AS263016 | 37721267470263016 |
| 2026-09-19 21:43:26Z | origin change | AS263016 → AS174 | 377211299174 |
| 2026-09-19 19:51:20Z | origin change | AS174 → AS263016 | 37721267470263016 |
| 2026-09-18 14:02:32Z | origin change | AS263016 → AS174 | 328840327727174 |
| 2026-09-18 12:47:00Z | origin change | AS174 → AS263016 | 37721267470263016 |
| 2026-09-18 12:44:48Z | origin change | AS263016 → AS174 | 37721174 |
| 2026-09-18 12:42:27Z | origin change | AS174 → AS263016 | 37721267470263016 |
| 2026-09-18 12:36:55Z | origin change | AS263016 → AS174 | 37721174 |
| 2026-09-18 12:33:01Z | origin change | AS174 → AS263016 | 37721267470263016 |
| 2026-09-18 07:14:22Z | origin change | AS263016 → AS174 | 57381503041299174 |