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 |
|---|---|---|---|---|
| 39D0C8 |  | 2025-09-05 16:01:37 | 2026-08-02 17:46:31 | FHUGI |
| 38B5BB | | 2025-01-21 16:58:12 | 2026-08-02 17:46:31 | |
| B936A7 | (reserved-for-future-use) | 2026-08-02 08:31:56 | 2026-08-02 17:46:31 | |
| AF10C5 |  | 2026-08-02 17:34:35 | 2026-08-02 17:42:12 | |
| 5004FC | (reserved-for-EUR/NAT) | 2026-08-02 17:24:16 | 2026-08-02 17:33:52 | |
| 1B0935 |  | 2026-08-02 17:20:30 | 2026-08-02 17:27:34 | |
| 51119B |  | 2026-07-24 10:16:24 | 2026-08-02 17:25:05 | MBU8BX |
| 3C7985 |  | 2025-07-14 05:05:03 | 2026-08-02 17:24:17 | CFG3EA CFG3FC CFG9ZH CFG9XT CFG6XA |
| 228DCB | (reserved-for-AFI) | 2026-08-02 06:38:44 | 2026-08-02 17:23:14 | |
| 4C80B8 |  | 2026-08-02 13:13:41 | 2026-08-02 17:21:36 | BBG251 BBG252 |
| 501C5A |  | 2026-08-02 08:13:25 | 2026-08-02 17:17:49 | CTN52R CTN475 CTN25F |
| 738C0C |  | 2026-07-28 22:37:14 | 2026-08-02 17:06:37 | ICL982 |
| 38505D | | 2024-05-12 08:55:50 | 2026-08-02 17:04:20 | |
| C87554 |  | 2026-08-02 16:55:38 | 2026-08-02 17:01:39 | |
| 600ABC |  | 2026-08-01 16:46:48 | 2026-08-02 17:00:33 | |
| 3C7427 | | 2026-07-25 10:58:54 | 2026-08-02 17:00:14 | TUI3NG TUI8GT TUI41W |
| F7FBBF | (reserved-for-future-use) | 2026-08-02 07:45:02 | 2026-08-02 16:34:46 | |
| 387ABC | | 2024-11-01 12:09:16 | 2026-08-02 16:25:40 | FJLHU |
| A3C532 | | 2026-08-02 15:24:02 | 2026-08-02 16:24:03 | N342ET |
| 20B148 | (reserved-for-AFI) | 2026-08-02 15:00:28 | 2026-08-02 16:22:26 | |
| 8D7CAE | Unallocated | 2026-08-02 10:35:16 | 2026-08-02 16:20:17 | |
| CBD251 | Unallocated | 2026-08-02 16:05:05 | 2026-08-02 16:13:48 | |
| 793857 |  | 2026-08-02 08:45:05 | 2026-08-02 15:41:51 | |
| 7C7380 |  | 2026-08-02 08:00:45 | 2026-08-02 15:38:05 | |
| 48E97A |  | 2026-07-28 13:54:00 | 2026-08-02 15:35:34 | LOT6YQ LOT3UJ |