Foxtrotcharlie - A journey to ADS-B tracking with Raspberry Pi

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 16:58:122025-12-05 11:09:13
38DD5B
2024-05-21 06:15:512025-12-05 11:00:46FPHCO
398E28
2025-12-05 10:18:212025-12-05 10:39:36FHDRI
3518D3
2025-12-03 09:20:462025-12-05 09:24:15
8DEB74Unallocated2025-12-05 08:41:542025-12-05 09:20:48
D6B4C4(reserved-for-future-use)2025-12-04 14:42:072025-12-04 15:19:55
39BA23
2025-06-18 13:24:582025-12-04 14:49:52
4B0D40
2025-12-04 13:48:442025-12-04 13:58:58P40T
393CC3
2025-09-22 09:02:412025-12-04 12:59:55FGPGD
33FC70
2025-11-28 08:56:012025-12-04 09:37:40PROVA12
4CAAA6
2025-12-03 18:51:592025-12-03 18:57:29
E45618
2025-12-03 15:14:512025-12-03 15:19:36
7584A7
2025-12-03 11:05:422025-12-03 11:33:19RPC4165
92C521(reserved-for-NAM/PAC)2025-12-02 15:49:042025-12-02 15:59:22
300A7F
2025-10-17 09:03:242025-12-02 14:35:22ISRAA
DFA390(reserved-for-future-use)2025-12-02 13:16:372025-12-02 13:21:22
4D405B
2024-07-11 13:24:102025-12-02 12:38:033AMXL
398A1D
2025-08-07 17:02:232025-12-02 12:15:22
115EF5
2025-12-02 11:16:132025-12-02 11:23:48
3997DB
2025-06-16 12:18:172025-12-02 11:14:48FWOOD
3962BC
2020-02-21 14:04:412025-12-02 10:47:14
47ADBE
2025-12-02 09:01:032025-12-02 09:10:36
3AFC44
2025-12-02 08:01:572025-12-02 08:10:38
E1A8A3
2025-12-01 16:36:192025-12-01 16:40:21
3A1F5C
2025-12-01 13:56:442025-12-01 14:10:55