Unknown hex codes
The table below shows the latest 25 unknown hex codes picked up from my location in Briancon and other sites.
| ModeS Code | Country | First Seen (UTC) | Last Seen (UTC) | CallSign |
|---|---|---|---|---|
| 38B5BB |  | 2025-01-21 16:58:12 | 2026-06-18 13:46:01 | |
| 2E1828 | (reserved-for-SAM) | 2026-06-14 07:22:23 | 2026-06-18 13:38:12 | |
| 3813FD | | 2026-06-11 10:44:17 | 2026-06-18 13:32:31 | |
| 5CE898 | (reserved-for-EUR/NAT) | 2026-06-14 10:16:37 | 2026-06-18 13:30:58 | |
| B5ADA5 | (reserved-for-future-use) | 2026-06-14 16:39:07 | 2026-06-18 13:28:43 | |
| 380A5C | | 2026-01-19 11:40:15 | 2026-06-18 13:15:16 | FJEPG |
| 386D7C | | 2024-05-27 15:10:33 | 2026-06-18 13:06:30 | |
| 6FC32A | (reserved-for-ASIA) | 2026-06-18 12:40:40 | 2026-06-18 12:50:15 | |
| 6043DA | (reserved-for-MID) | 2026-06-18 12:41:15 | 2026-06-18 12:49:08 | |
| A1E4F6 |  | 2026-06-18 11:58:24 | 2026-06-18 12:31:38 | N221CM |
| 8DD256 | Unallocated | 2026-06-18 06:43:58 | 2026-06-18 12:30:51 | |
| 300001 |  | 2025-04-22 09:37:06 | 2026-06-18 12:30:51 | ILASZ |
| D2C73B | (reserved-for-future-use) | 2026-06-18 12:09:55 | 2026-06-18 12:18:57 | |
| FD56CC | (reserved-for-future-use) | 2026-06-16 12:52:54 | 2026-06-18 11:44:32 | |
| 15A21D |  | 2026-06-14 11:14:48 | 2026-06-18 11:43:25 | |
| 835B03 |  | 2026-06-14 08:53:28 | 2026-06-18 11:15:40 | |
| 54DB36 | (reserved-for-EUR/NAT) | 2026-06-14 06:35:46 | 2026-06-18 11:02:04 | |
| 4C8F78 | Unallocated | 2026-06-15 13:24:53 | 2026-06-18 11:00:24 | |
| C75AE5 | Unallocated | 2026-06-18 10:36:08 | 2026-06-18 10:46:49 | |
| 6C0424 | (reserved-for-ASIA) | 2026-06-16 12:43:09 | 2026-06-18 10:41:46 | |
| DFC5CE | (reserved-for-future-use) | 2026-06-18 09:45:47 | 2026-06-18 10:07:06 | |
| EBC53F | Unallocated | 2026-06-14 06:47:57 | 2026-06-18 10:02:08 | |
| 388161 | | 2026-04-21 15:01:12 | 2026-06-18 09:48:36 | MOUET1 |
| 50F2D8 |  | 2026-06-14 09:45:25 | 2026-06-18 09:37:15 | |
| 38505D | | 2024-05-12 08:55:50 | 2026-06-18 09:32:41 |