sensors Mode-S transponder

4D0104

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-VCD · BOEING 747-8

Hex
4D0104
Octal
23200404
Decimal
5,046,532
Country
LU
Tail
LX-VCD
Type
B748
No current signal · last broadcast 5h ago
Flights observed
106
Distinct callsigns
20
Country
LU
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4D0104.

Country allocation

The ICAO 24-bit address 4D0104 falls within the block assigned to Luxembourg (LU) by ICAO Annex 10, Volume III. Every aircraft registered in Luxembourg receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
CLX37 - 5 2026-05-28
CLX226 Cargolux 5 2026-05-25
CLX9521 Cargolux 4 2026-05-19
CLX9425 Cargolux 4 2026-04-18
CLX9005 Cargolux 4 2026-05-15
CLX46C Cargolux 4 2026-04-16
CLX39 - 4 2026-05-28
CLX287 Cargolux 4 2026-05-08
CLX209 Cargolux 4 2026-04-13
CLX9016 Cargolux 3 2026-05-17
CLX7334 Cargolux 3 2026-05-22
CLX5933 Cargolux 3 2026-05-27
CLX4806 Cargolux 3 2026-05-24
CLX352 Cargolux 3 2026-05-23
CLX244 Cargolux 3 2026-05-10
CLX1 - 3 2026-04-14
CLX9015 Cargolux 2 2026-05-15
CLX69 Cargolux 2 2026-05-16
CLX6356 - 2 2026-04-18
CLX5932 Cargolux 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CLX4695 CGO → KMQ May 29, 16:20 UTCMay 29, 20:00 UTC3h 40m
2026-05-28 CLX37 - May 28, 23:40 UTCMay 29, 13:10 UTC13h 30m
2026-05-28 CLX37 - May 28, 15:50 UTCMay 29, 13:10 UTC21h 20m
2026-05-28 CLX39 - May 28, 05:05 UTCMay 28, 23:55 UTC18h 50m
2026-05-28 CLX39 - May 28, 04:15 UTCMay 28, 23:55 UTC19h 40m
2026-05-27 CLX5933 NLU → LUX May 27, 14:55 UTCMay 27, 20:40 UTC5h 45m
2026-05-27 CLX5933 NLU → LUX May 27, 10:30 UTCMay 27, 14:50 UTC4h 20m
2026-05-26 CLX5932 GDL → NLU May 26, 22:20 UTCMay 27, 02:49 UTC4h 30m
2026-05-26 CLX237 HKG → ANC May 26, 10:54 UTCMay 26, 20:34 UTC9h 40m
2026-05-25 CLX4971 DWC → HKG May 25, 20:50 UTCMay 26, 08:19 UTC11h 30m
2026-05-25 CLX226 HKG → ANC May 25, 10:35 UTCMay 25, 17:20 UTC6h 45m
2026-05-24 CLX226 HKG → ANC May 24, 12:50 UTCMay 25, 07:30 UTC18h 40m
2026-05-24 CLX4806 RUH → HKG May 24, 07:40 UTCMay 24, 08:15 UTC35m
2026-05-23 CLX4806 RUH → HKG May 23, 20:55 UTCMay 24, 00:55 UTC4h 0m
2026-05-23 CLX352 BUD → LUX May 23, 12:10 UTCMay 23, 13:35 UTC1h 25m
2026-05-23 CLX352 BUD → LUX May 23, 07:25 UTCMay 23, 10:20 UTC2h 55m
2026-05-22 CLX352 BUD → LUX May 22, 21:45 UTCMay 22, 22:05 UTC20m
2026-05-22 CLX7334 DWC → CGK May 22, 18:45 UTCMay 22, 19:00 UTC15m
2026-05-22 CLX7334 DWC → CGK May 22, 11:00 UTCMay 22, 12:40 UTC1h 40m
2026-05-21 CLX7334 DWC → CGK May 21, 19:15 UTCMay 22, 07:55 UTC12h 40m
2026-05-20 CLX48 TPE → LUX May 20, 19:00 UTCMay 21, 09:50 UTC14h 50m
2026-05-20 CLX9362 GYD → LUX May 20, 04:15 UTCMay 20, 16:30 UTC12h 16m
2026-05-19 CLX519 - May 19, 15:25 UTCMay 19, 19:35 UTC4h 10m
2026-05-19 CLX519 - May 19, 05:05 UTCMay 19, 05:25 UTC20m
2026-05-19 CLX9521 KUL → HKG May 19, 01:00 UTCMay 19, 01:20 UTC20m
2026-05-18 CLX9521 KUL → HKG May 18, 21:45 UTCMay 18, 22:15 UTC30m
2026-05-18 CLX9521 KUL → HKG May 18, 19:10 UTCMay 18, 19:20 UTC10m
2026-05-18 CLX9521 KUL → HKG May 18, 07:25 UTCMay 18, 15:40 UTC8h 15m
2026-05-17 CLX4P - May 17, 13:45 UTCMay 18, 04:05 UTC14h 20m
2026-05-17 CLX9016 TPE → BKK May 17, 08:35 UTCMay 17, 11:55 UTC3h 20m
2026-05-16 CLX9006 - May 16, 15:50 UTCMay 17, 05:30 UTC13h 40m
2026-05-16 CLX69 GYD → LUX May 16, 08:41 UTCMay 16, 12:45 UTC4h 5m
2026-05-15 CLX9015 TPE → GYD May 15, 22:45 UTCMay 15, 23:00 UTC15m
2026-05-15 CLX9005 ICN → TPE May 15, 18:35 UTCMay 15, 18:55 UTC20m
2026-05-15 CLX9005 ICN → TPE May 15, 07:25 UTCMay 15, 11:35 UTC4h 10m
2026-05-14 CLX56R LAX → LUX May 14, 18:00 UTCMay 15, 04:10 UTC10h 10m
2026-05-14 CLX5164 LAX → LUX May 14, 08:35 UTCMay 14, 13:55 UTC5h 20m
2026-05-13 CLX5163 MEX → GDL May 13, 22:15 UTCMay 14, 04:05 UTC5h 50m
2026-05-13 CLX245 HKG → ANC May 13, 11:15 UTCMay 13, 20:30 UTC9h 15m
2026-05-13 CLX4162 SAW → LUX May 13, 07:50 UTCMay 13, 08:20 UTC30m
2026-05-12 CLX4162 SAW → LUX May 12, 21:01 UTCMay 13, 00:50 UTC3h 50m
2026-05-12 CLX79 - May 12, 12:00 UTCMay 12, 16:20 UTC4h 20m
2026-05-11 CLX65 - May 11, 04:30 UTCMay 11, 08:30 UTC4h 0m
2026-05-10 CLX244 HKG → ANC May 10, 09:30 UTCMay 10, 19:50 UTC10h 20m
2026-05-10 CLX244 HKG → ANC May 10, 01:34 UTCMay 10, 06:35 UTC5h 0m
2026-05-09 CLX244 HKG → ANC May 9, 14:40 UTCMay 9, 23:20 UTC8h 40m
2026-05-09 CLX4755 DWC → HKG May 9, 08:30 UTCMay 9, 09:00 UTC30m
2026-05-08 CLX4755 DWC → HKG May 8, 21:45 UTCMay 9, 01:45 UTC4h 0m
2026-05-08 CLX287 HKG → ANC May 8, 10:14 UTCMay 8, 18:45 UTC8h 30m
2026-05-08 CLX287 HKG → ANC May 8, 05:35 UTCMay 8, 07:39 UTC2h 5m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the LX-VCD page for operator, model, and routing details .

Mode-S 4D0104 frequently asked

What is Mode-S code 4D0104?
4D0104 is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-VCD.
Where is Mode-S 4D0104 registered?
Mode-S code 4D0104 is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D0104 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D0104, octal 23200404, decimal 5,046,532.
What flights does 4D0104 operate?
Mode-S 4D0104 has broadcast 20 distinct callsigns, including CLX37, CLX226, CLX9521, CLX9425, CLX9005.