38.21.124.0/22 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 | 2026-10-26 | 2026-11-03 |
| AS274911 FIBERTV | no ROA | 3 | 4504966966762262253274911 | 2026-09-18 | 2026-11-03 |
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
0 announced prefixes inside this one
Nothing more specific is announced.
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-30 08:25:46Z | origin change | AS274911 → AS174 | 557202914174 |
| 2026-10-30 08:25:45Z | origin change | AS174 → AS274911 | 4504966966762262253274911 |
| 2026-10-30 08:25:38Z | origin change | AS274911 → AS174 | 33331273174 |
| 2026-10-30 08:25:37Z | origin change | AS174 → AS274911 | 61218693912956262253262253262253274911 |
| 2026-10-30 08:25:10Z | origin change | AS274911 → AS174 | 21628582806762174 |
| 2026-10-30 08:24:15Z | origin change | AS174 → AS274911 | 4504966966762262253274911 |
| 2026-10-30 08:24:14Z | origin change | AS274911 → AS174 | 557202914174 |
| 2026-10-30 08:23:46Z | origin change | AS174 → AS274911 | 61218693912956262253262253262253274911 |
| 2026-10-30 08:23:45Z | origin change | AS274911 → AS174 | 6121869391299174 |
| 2026-10-30 08:23:44Z | origin change | AS174 → AS274911 | 61218693912956262253274911 |
| 2026-10-30 08:23:16Z | origin change | AS174 → AS274911 | 61218693912956262253274911 |
| 2026-10-30 08:23:16Z | origin change | AS274911 → AS174 | 21628582806762174 |
| 2026-10-30 07:41:48Z | origin change | AS274911 → AS174 | 37989563001321324657174 |
| 2026-10-30 07:41:44Z | origin change | AS174 → AS274911 | 61218693912956262253262253262253274911 |
| 2026-10-30 07:41:15Z | origin change | AS274911 → AS174 | 21628582806762174 |
| 2026-10-30 07:40:45Z | origin change | AS174 → AS274911 | 4504966966762262253274911 |
| 2026-10-30 07:40:38Z | origin change | AS274911 → AS174 | 37989563001321324657174 |
| 2026-10-30 07:40:33Z | origin change | AS274911 → AS174 | 33331273174 |
| 2026-10-30 07:40:33Z | origin change | AS174 → AS274911 | 61218693912956262253274911 |
| 2026-10-30 07:40:32Z | origin change | AS174 → AS274911 | 61218693912956262253262253262253274911 |
| 2026-10-30 07:40:02Z | origin change | AS174 → AS274911 | 61218693912956262253274911 |
| 2026-10-30 07:40:01Z | origin change | AS274911 → AS174 | 33331257174 |
| 2026-10-26 15:17:31Z | origin change | AS274911 → AS174 | 35493356174 |
| 2026-10-26 15:17:29Z | origin change | AS174 → AS274911 | 21628582806762262253274911 |
| 2026-10-26 15:17:10Z | origin change | AS274911 → AS174 | 481853356174 |
| 2026-10-26 15:17:07Z | origin change | AS174 → AS274911 | 1490733566762262253274911 |
| 2026-10-26 15:12:35Z | origin change | AS274911 → AS174 | 503041299174 |
| 2026-10-26 15:12:30Z | origin change | AS174 → AS274911 | 140357764536762262253274911 |
| 2026-10-26 15:09:56Z | origin change | AS174 → AS274911 | 578211258632576762262253274911 |
| 2026-10-26 15:08:46Z | origin change | AS274911 → AS174 | 34549174 |
| 2026-10-26 15:08:46Z | origin change | AS274911 → AS174 | 20649934549174 |
| 2026-10-26 15:05:33Z | origin change | AS174 → AS274911 | 20409220766290756762262253274911 |
| 2026-10-26 15:01:33Z | origin change | AS274911 → AS174 | 37989563001321324657174 |
| 2026-10-26 14:56:15Z | origin change | AS274911 → AS174 | 17639174 |
| 2026-10-26 14:56:01Z | origin change | AS174 → AS274911 | 580573454964536762262253274911 |
| 2026-10-26 14:56:01Z | origin change | AS274911 → AS174 | 132825174 |
| 2026-10-26 14:56:01Z | origin change | AS174 → AS274911 | 3454964536762262253274911 |
| 2026-10-26 14:55:58Z | origin change | AS274911 → AS174 | 557209930174 |
| 2026-10-26 14:55:57Z | origin change | AS174 → AS274911 | 20409220766290756762262253274911 |
| 2026-10-26 14:55:50Z | origin change | AS274911 → AS174 | 13830971174 |
| 2026-10-26 14:55:47Z | origin change | AS174 → AS274911 | 1763934916762262253274911 |
| 2026-10-26 14:55:42Z | origin change | AS274911 → AS174 | 349275202532097174 |