38.51.237.0/24 RPKI valid 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 |
|---|---|---|---|---|---|
| AS271907 COLNETWORK C.A. | RPKI valid | 42 | 2448261461271907 | 2026-09-18 | 2026-10-18 |
| AS174 Cogent Communications, LLC | RPKI invalid | 6 | 58057174 | 2026-10-09 | 2026-10-18 |
RPKI
1 ROA covers this prefix
| ROA prefix | Max length | Authorised origin | Trust anchor | Result for this route |
|---|---|---|---|---|
| 38.51.236.0/22 | /24 | AS271907 | arin | authorises it |
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 |
|---|---|---|---|---|---|
| 38.51.236.0/23 v4 | AS271907 COLNETWORK C.A. | RPKI valid | 48 | 2448261461271907 | 2026-09-18 |
| 38.0.0.0/8 v4 | AS174 Cogent Communications, LLC | no ROA | 41 | 34549174 | 2026-09-18 |
More specific routes
0 announced prefixes inside this one
Nothing more specific is announced.
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-18 20:49:01Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-18 18:49:01Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-18 16:51:14Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-18 16:14:57Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-18 14:51:34Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-18 13:45:11Z | origin change | AS271907 → AS174 | 17639174 |
| 2026-10-18 13:37:41Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-18 12:33:19Z | origin change | AS271907 → AS174 | 17639174 |
| 2026-10-18 04:04:41Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-18 00:11:09Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-17 18:03:45Z | origin change | AS174 → AS271907 | 38855693961461271907 |
| 2026-10-17 17:32:26Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-17 09:54:55Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-17 07:23:36Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-16 15:32:09Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-16 15:05:59Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-16 14:48:16Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-16 14:14:14Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-16 07:49:18Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-16 06:32:04Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-16 05:15:58Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-16 02:45:01Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-15 21:05:38Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-15 21:05:36Z | origin change | AS174 → AS271907 | 34927693961461271907 |
| 2026-10-15 07:30:14Z | origin change | AS174 → AS271907 | 202365693961461271907 |
| 2026-10-15 06:36:55Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-15 00:35:56Z | origin change | AS174 → AS271907 | 208972693961461271907 |
| 2026-10-15 00:11:01Z | origin change | AS271907 → AS174 | 328840327727174 |
| 2026-10-14 23:01:31Z | origin change | AS174 → AS271907 | 4967312389693961461271907 |
| 2026-10-14 23:01:31Z | origin change | AS271907 → AS174 | 4967312389174 |
| 2026-10-14 22:54:52Z | origin change | AS174 → AS271907 | 503003257676261461271907 |
| 2026-10-14 22:52:31Z | origin change | AS271907 → AS174 | 557209930174 |
| 2026-10-14 22:52:00Z | origin change | AS174 → AS271907 | 1403577349161461614616146161461271907 |
| 2026-10-14 22:51:54Z | origin change | AS271907 → AS174 | 4967312389174 |
| 2026-10-14 22:51:42Z | origin change | AS271907 → AS174 | 13830971174 |
| 2026-10-14 22:51:42Z | origin change | AS271907 → AS174 | 4913453356642464246424174 |
| 2026-10-14 22:51:41Z | origin change | AS174 → AS271907 | 450496696693961461271907 |
| 2026-10-14 22:51:41Z | origin change | AS174 → AS271907 | 149073356676261461271907 |
| 2026-10-14 22:51:22Z | origin change | AS174 → AS271907 | 57821125863257676261461271907 |
| 2026-10-14 22:51:22Z | origin change | AS174 → AS271907 | 24482693961461271907 |
| 2026-10-14 22:51:22Z | origin change | AS271907 → AS174 | 2950439392174 |
| 2026-10-14 22:51:22Z | origin change | AS271907 → AS174 | 34927174174 |
| 2026-10-14 22:50:02Z | origin change | AS174 → AS271907 | 5782112586325717461461271907 |
| 2026-10-14 22:50:00Z | origin change | AS271907 → AS174 | 34927174174 |
| 2026-10-14 22:49:59Z | origin change | AS271907 → AS174 | 2950439392174 |
| 2026-10-14 22:49:59Z | origin change | AS174 → AS271907 | 57821693961461271907 |
| 2026-10-14 22:48:32Z | origin change | AS174 → AS271907 | 24482693961461271907 |
| 2026-10-14 22:48:32Z | origin change | AS271907 → AS174 | 2950439392174 |
| 2026-10-14 22:48:32Z | origin change | AS271907 → AS174 | 34927174174 |
| 2026-10-14 22:48:32Z | origin change | AS174 → AS271907 | 57821125863257676261461271907 |