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 | 2025-04-01 08:07:03 | |
| D6E733 | (reserved-for-future-use) | 2025-04-01 07:18:51 | 2025-04-01 07:26:06 | |
| 1344E9 |  | 2025-04-01 07:14:18 | 2025-04-01 07:22:15 | |
| 39CF79 | | 2025-04-01 06:01:31 | 2025-04-01 06:08:41 | |
| 3B23FF | | 2024-05-01 10:10:36 | 2025-04-01 05:18:48 | MOUET2 |
| 38F0DB | | 2024-05-10 11:43:10 | 2025-03-31 21:58:12 | |
| 598C23 | (reserved-for-EUR/NAT) | 2025-03-31 20:29:31 | 2025-03-31 20:37:47 | |
| 4D405D |  | 2024-09-20 15:37:20 | 2025-03-31 16:53:06 | 3AMXB |
| 3EFBEF |  | 2025-03-31 16:11:11 | 2025-03-31 16:11:11 | |
| 384B3D | | 2024-05-06 16:21:48 | 2025-03-31 15:39:48 | FJCTQ |
| 3935FF | | 2025-01-16 08:18:52 | 2025-03-31 15:15:39 | CROIX2 |
| 385BFC | | 2022-11-11 15:17:28 | 2025-03-31 14:50:07 | |
| CB8533 | Unallocated | 2025-03-31 13:55:37 | 2025-03-31 14:49:39 | |
| 613164 | (reserved-for-MID) | 2025-03-31 14:36:20 | 2025-03-31 14:45:07 | |
| 48500D | Netherlands-Kingdom-of | 2023-03-15 14:38:01 | 2025-03-31 14:11:35 | PHTEM |
| BC3AD4 | (reserved-for-future-use) | 2025-03-31 13:31:12 | 2025-03-31 13:57:56 | |
| 000480 | (unallocated-1) | 2024-11-11 12:18:24 | 2025-03-31 12:59:33 | |
| D08FB9 | (reserved-for-future-use) | 2025-03-31 11:31:51 | 2025-03-31 11:45:13 | |
| FC33C1 | (reserved-for-future-use) | 2025-03-31 11:22:55 | 2025-03-31 11:31:19 | |
| 19D5E6 | | 2025-03-31 10:21:44 | 2025-03-31 11:04:32 | |
| E27764 |  | 2025-03-30 11:44:50 | 2025-03-31 09:59:45 | |
| 397BDB | | 2024-07-05 07:53:30 | 2025-03-31 09:46:44 | FPGBE |
| 38EFBB | | 2024-07-20 07:14:45 | 2025-03-31 08:51:32 | FPTGB |
| 2B0CA5 | (reserved-for-SAM) | 2025-03-31 08:39:43 | 2025-03-31 08:47:39 | |
| 000600 | (unallocated-1) | 2024-06-14 09:14:28 | 2025-03-31 08:28:34 |