38.191.164.0/23 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 | 28 | 58057174 | 2026-10-05 | 2026-11-06 |
| AS142307 PT CYB Media Group | no ROA | 16 | 4800142307 | 2026-09-18 | 2026-11-06 |
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 | 40 | 34549174 | 2026-09-18 |
More specific routes
4 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 38.191.164.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 9 | 2026-10-05 |
| 38.191.164.0/24 v4 | AS142307 PT CYB Media Group | no ROA | 40 | 2026-09-18 |
| 38.191.165.0/24 v4 | AS174 Cogent Communications, LLC | no ROA | 9 | 2026-10-05 |
| 38.191.165.0/24 v4 | AS142307 PT CYB Media Group | no ROA | 40 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-11-06 07:53:52Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 07:53:41Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 07:53:40Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 07:53:38Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 07:10:52Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 07:10:32Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 07:10:31Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 07:10:29Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 07:05:13Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 07:05:01Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 07:04:59Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 07:04:56Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 06:17:36Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 06:17:22Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 06:17:21Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 06:17:19Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 06:16:03Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 06:16:00Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 06:16:00Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 06:15:58Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 05:57:07Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 05:56:58Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 05:56:57Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 05:56:55Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 05:50:27Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 05:50:20Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 05:50:20Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 05:50:17Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 05:44:19Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 05:43:53Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 05:43:53Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 05:43:50Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 05:00:46Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 05:00:20Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 05:00:19Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 05:00:16Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 04:48:59Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 04:48:48Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 04:48:47Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 04:48:46Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 04:45:24Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 04:45:04Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 04:45:03Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 04:45:01Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 04:10:03Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 04:09:33Z | origin change | AS142307 → AS174 | 2448229142914174 |
| 2026-11-06 04:09:33Z | origin change | AS174 → AS142307 | 244824800142307142307142307142307 |
| 2026-11-06 04:09:30Z | origin change | AS174 → AS142307 | 6121869394800142307142307142307142307 |
| 2026-11-06 03:53:40Z | origin change | AS142307 → AS174 | 460875752914174 |
| 2026-11-06 03:53:11Z | origin change | AS142307 → AS174 | 2448229142914174 |