152.123.16.0/23 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 |
|---|---|---|---|---|---|
| AS3923 Federal Aviation Administration | no ROA | 34 | 1490750783923 | 2026-09-18 | 2026-10-28 |
| AS4046 Federal Aviation Administration | no ROA | 15 | 354933564046 | 2026-09-18 | 2026-10-28 |
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
- 152.122.0.0/15
- RIR
- ARIN
- Country
- 🇺🇸 US
- Status
- allocated
- Allocated
- 1991-08-15
Less specific routes
Announced prefixes that contain this one
Nothing less specific is announced.
More specific routes
2 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 152.123.16.0/24 v4 | AS3923 Federal Aviation Administration | no ROA | 49 | 2026-09-18 |
| 152.123.17.0/24 v4 | AS4046 Federal Aviation Administration | no ROA | 44 | 2026-09-18 |
Recorded changes
| When | Change | Origin | Path |
|---|---|---|---|
| 2026-10-28 02:25:44Z | origin change | AS4046 → AS3923 | 69395078507850783923 |
| 2026-10-28 00:43:38Z | origin change | AS3923 → AS4046 | 55720291433564046 |
| 2026-10-28 00:43:37Z | origin change | AS4046 → AS3923 | 204092198978174507850783923 |
| 2026-10-28 00:12:03Z | origin change | AS3923 → AS4046 | 20236550673645333564046 |
| 2026-10-27 15:12:05Z | origin change | AS4046 → AS3923 | 69395078507850783923 |
| 2026-10-27 14:48:16Z | origin change | AS3923 → AS4046 | 55720291433564046 |
| 2026-10-27 09:24:36Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-27 08:09:14Z | origin change | AS3923 → AS4046 | 4967320485645333564046 |
| 2026-10-27 03:34:45Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-27 01:06:23Z | origin change | AS3923 → AS4046 | 49432215510315435062933564046 |
| 2026-10-26 12:39:01Z | origin change | AS4046 → AS3923 | 5062869395078507850783923 |
| 2026-10-26 12:03:21Z | origin change | AS3923 → AS4046 | 5062833564046 |
| 2026-10-24 16:14:07Z | origin change | AS4046 → AS3923 | 69395078507850783923 |
| 2026-10-24 15:51:50Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-23 15:40:04Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-23 13:02:52Z | origin change | AS3923 → AS4046 | 49432215510315435062933564046 |
| 2026-10-22 16:55:38Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-22 12:53:25Z | origin change | AS3923 → AS4046 | 701833564046 |
| 2026-10-22 10:48:06Z | origin change | AS4046 → AS3923 | 1490750783923 |
| 2026-10-22 10:42:30Z | origin change | AS3923 → AS4046 | 34549291433564046 |
| 2026-10-22 03:42:34Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-22 03:20:33Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-21 12:29:44Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-21 12:23:28Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-21 07:24:17Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-21 07:01:10Z | origin change | AS3923 → AS4046 | 701833564046 |
| 2026-10-20 21:49:50Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-20 21:07:45Z | origin change | AS3923 → AS4046 | 5805734549291433564046 |
| 2026-10-20 12:22:06Z | origin change | AS4046 → AS3923 | 3885569395078507850783923 |
| 2026-10-20 11:56:14Z | origin change | AS3923 → AS4046 | 20514843433564046 |
| 2026-10-19 19:26:31Z | origin change | AS4046 → AS3923 | 5062869395078507850783923 |
| 2026-10-19 18:43:45Z | origin change | AS3923 → AS4046 | 5062833564046 |
| 2026-10-19 08:06:09Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-19 05:12:05Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-19 04:55:39Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-19 04:11:44Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-18 15:29:29Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-18 15:11:11Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-18 14:30:17Z | origin change | AS4046 → AS3923 | 328840327727174507850783923 |
| 2026-10-18 13:46:36Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-18 13:37:42Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-18 12:34:34Z | origin change | AS3923 → AS4046 | 1763933564046 |
| 2026-10-16 16:11:54Z | origin change | AS4046 → AS3923 | 38229244901153750783923 |
| 2026-10-16 16:09:27Z | origin change | AS3923 → AS4046 | 20649934549291433564046 |
| 2026-10-16 01:37:11Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-16 00:32:18Z | origin change | AS3923 → AS4046 | 32884032772717433564046 |
| 2026-10-15 18:47:24Z | origin change | AS4046 → AS3923 | 20236569395078507850783923 |
| 2026-10-15 17:57:07Z | origin change | AS3923 → AS4046 | 55720291433564046 |
| 2026-10-15 09:05:47Z | origin change | AS4046 → AS3923 | 3772169395078507850783923 |
| 2026-10-15 08:04:12Z | origin change | AS3923 → AS4046 | 354933564046 |