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 |
|---|---|---|---|---|
| 3AAAF6 |  | 2023-11-07 10:59:12 | 2026-02-16 10:55:00 | |
| 3AAB8F | | 2025-05-16 08:10:11 | 2026-02-16 10:47:06 | |
| 3485D2 |  | 2026-02-16 10:21:50 | 2026-02-16 10:45:32 | ANE98ZC |
| 4B1943 |  | 2026-02-15 19:51:45 | 2026-02-15 19:55:43 | |
| 1C330B |  | 2026-02-15 14:24:00 | 2026-02-15 16:54:32 | |
| 5004CD | (reserved-for-EUR/NAT) | 2026-02-15 14:35:15 | 2026-02-15 15:01:36 | T7SOFI |
| 3D5FB4 |  | 2026-02-15 12:18:54 | 2026-02-15 12:57:46 | DFIMM |
| 3B4219 | | 2026-02-15 12:43:29 | 2026-02-15 12:49:50 | |
| 056B34 | Unallocated | 2026-02-15 10:42:48 | 2026-02-15 10:49:14 | |
| D11CD3 | (reserved-for-future-use) | 2026-02-15 10:27:36 | 2026-02-15 10:34:09 | |
| 7A4E1F |  | 2026-02-15 08:55:09 | 2026-02-15 09:02:16 | |
| 4D2183 |  | 2026-02-15 06:21:09 | 2026-02-15 06:28:27 | CPV106 |
| 38B5BB | | 2025-01-21 16:58:12 | 2026-02-14 16:01:19 | |
| 3D6F23 | | 2026-02-14 15:11:39 | 2026-02-14 15:26:35 | DFOIL |
| 62F9F2 | (reserved-for-MID) | 2026-02-14 15:18:19 | 2026-02-14 15:25:43 | |
| 41CE5A |  | 2026-02-14 11:32:45 | 2026-02-14 14:59:23 | |
| DB8989 | (reserved-for-future-use) | 2026-02-14 09:59:10 | 2026-02-14 10:05:35 | |
| 40C7A1 | | 2026-02-14 08:03:04 | 2026-02-14 08:07:24 | |
| 2BF494 | (reserved-for-SAM) | 2026-02-13 17:38:29 | 2026-02-13 17:44:10 | |
| C16E1E |  | 2026-02-13 06:39:55 | 2026-02-13 17:06:58 | |
| 392EDC | | 2024-09-03 14:56:33 | 2026-02-13 16:29:47 | |
| 409600 | | 2026-02-13 15:46:47 | 2026-02-13 16:23:26 | |
| 3962BC | | 2020-02-21 14:04:41 | 2026-02-13 15:23:01 | |
| 3B7B84 | | 2025-12-12 13:19:20 | 2026-02-13 12:07:20 | |
| 33FC90 |  | 2025-11-11 13:28:56 | 2026-02-13 10:43:25 |