38.143.4.0/24 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 | 31 | 37721174 | 2026-09-18 | 2026-10-11 |
| AS397442 Strategic Technology Solutions, LLC | no ROA | 10 | 34549646146887397442 | 2026-09-18 | 2026-10-11 |
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 | 43 | 34549174 | 2026-09-18 |
More specific routes
0 announced prefixes inside this one
Nothing more specific is announced.
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-10 19:42:24Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-10-10 19:33:58Z | origin change | AS174 → AS397442 | 4818564614688746887397442 |
| 2026-10-09 00:16:38Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-10-08 22:35:50Z | origin change | AS174 → AS397442 | 140357764614688746887397442 |
| 2026-10-08 22:31:47Z | origin change | AS397442 → AS174 | 33333320174 |
| 2026-10-08 17:55:17Z | origin change | AS174 → AS397442 | 61218693964614688746887397442 |
| 2026-10-08 11:59:38Z | origin change | AS397442 → AS174 | 2950439392174 |
| 2026-10-08 11:57:48Z | origin change | AS174 → AS397442 | 4818564614688746887397442 |
| 2026-10-07 16:18:44Z | origin change | AS397442 → AS174 | 149071299174 |
| 2026-10-07 16:09:03Z | origin change | AS174 → AS397442 | 3798956300132132465764614688746887397442 |
| 2026-10-07 10:25:39Z | origin change | AS397442 → AS174 | 2950439392174 |
| 2026-10-07 10:24:57Z | origin change | AS174 → AS397442 | 295041593564614688746887397442 |
| 2026-10-05 00:14:27Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-10-04 09:55:16Z | origin change | AS174 → AS397442 | 580573454964614688746887397442 |
| 2026-10-03 03:14:30Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-10-03 01:31:40Z | origin change | AS174 → AS397442 | 295041593564614688746887397442 |
| 2026-10-01 18:45:04Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-10-01 08:33:59Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-10-01 07:59:33Z | origin change | AS397442 → AS174 | 557202914174 |
| 2026-10-01 05:02:04Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-10-01 03:32:56Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-09-30 21:47:17Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 19:18:14Z | origin change | AS397442 → AS174 | 557209930174 |
| 2026-09-30 19:10:05Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 19:09:24Z | origin change | AS397442 → AS174 | 557202914174 |
| 2026-09-30 18:24:38Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 18:07:39Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-09-30 14:39:06Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 14:37:47Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-09-30 12:12:25Z | origin change | AS174 → AS397442 | 295041593564614688746887397442 |
| 2026-09-30 12:12:15Z | origin change | AS397442 → AS174 | 2950439392174 |
| 2026-09-30 12:11:23Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 11:45:24Z | origin change | AS397442 → AS174 | 37721174 |
| 2026-09-30 09:59:17Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 09:35:56Z | origin change | AS397442 → AS174 | 377211299174 |
| 2026-09-30 04:15:14Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-30 03:48:44Z | origin change | AS397442 → AS174 | 328840327727174 |
| 2026-09-29 18:03:00Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-29 17:08:25Z | origin change | AS397442 → AS174 | 557202914174 |
| 2026-09-29 15:07:28Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-29 13:43:53Z | origin change | AS397442 → AS174 | 37721174 |
| 2026-09-29 13:31:00Z | origin change | AS174 → AS397442 | 295041593564614688746887397442 |
| 2026-09-29 13:06:02Z | origin change | AS397442 → AS174 | 2950439392174 |
| 2026-09-29 07:08:37Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-29 07:06:08Z | origin change | AS397442 → AS174 | 491345335664242914174 |
| 2026-09-29 03:48:52Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-28 21:21:53Z | origin change | AS397442 → AS174 | 557202914174 |
| 2026-09-28 00:21:26Z | origin change | AS174 → AS397442 | 85264614688746887397442 |
| 2026-09-27 23:53:56Z | origin change | AS397442 → AS174 | 4943221551031543174 |
| 2026-09-27 22:30:02Z | origin change | AS174 → AS397442 | 85264614688746887397442 |