38.19.224.0/23 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 | 33 | 34549174 | 2026-09-18 | 2026-09-18 |
| AS272265 GRX BRASIL TELECOM LTDA | no ROA | 9 | 37721269096263099272265 | 2026-09-18 | 2026-09-18 |
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
2 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 38.19.224.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 39 | 2026-09-18 |
| 38.19.225.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 39 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-09-18 20:59:40Z | origin change | AS272265 → AS174 | 328840327727174 |
| 2026-09-18 18:47:55Z | origin change | AS174 → AS272265 | 14035773356269096263099272265 |
| 2026-09-18 14:03:29Z | origin change | AS272265 → AS174 | 328840327727174 |
| 2026-09-18 12:46:01Z | origin change | AS174 → AS272265 | 37721269096263099272265 |
| 2026-09-18 12:44:45Z | origin change | AS272265 → AS174 | 37721174 |
| 2026-09-18 12:39:22Z | origin change | AS174 → AS272265 | 450496696676252468269096263099272265 |
| 2026-09-18 12:36:47Z | origin change | AS272265 → AS174 | 37721174 |
| 2026-09-18 12:31:42Z | origin change | AS174 → AS272265 | 37721269096263099272265 |
| 2026-09-18 12:29:47Z | origin change | AS272265 → AS174 | 37721174 |
| 2026-09-18 12:29:22Z | origin change | AS174 → AS272265 | 45049669667621378653181263099272265 |