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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
Broadcasting now · callsign CLX5482 · 31,000 ft
Flights observed
207
Distinct callsigns
20
Country
LU
Last broadcast
12h ago

Current position

4D0104 is currently broadcasting. Map zoomed to live position.

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
CLX287 Cargolux 13 2026-06-19
CLX278 Cargolux 7 2026-06-23
CLX9005 - 6 2026-07-10
CLX9425 - 5 2026-06-26
CLX7355 Cargolux 5 2026-06-13
CLX4793 Cargolux 5 2026-06-18
CLX37 - 5 2026-05-28
CLX226 Cargolux 5 2026-05-25
CLX9521 Cargolux 4 2026-05-19
CLX7337 - 4 2026-06-29
CLX7216 - 4 2026-07-04
CLX597 - 4 2026-06-14
CLX46C Cargolux 4 2026-04-16
CLX4327 - 4 2026-06-22
CLX39 - 4 2026-05-28
CLX209 Cargolux 4 2026-04-13
CLX9931 Cargolux 3 2026-06-16
CLX9016 Cargolux 3 2026-05-17
CLX9015 - 3 2026-07-10
CLX7334 Cargolux 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CLX4481 - Jul 13, 12:30 UTCJul 13, 16:15 UTC3h 45m
2026-07-13 CLX942 - Jul 13, 03:40 UTCJul 13, 08:05 UTC4h 25m
2026-07-12 CLX942 - Jul 12, 14:35 UTCJul 12, 14:50 UTC15m
2026-07-12 CLX7417 - Jul 12, 09:30 UTCJul 12, 09:50 UTC20m
2026-07-12 CLX7417 - Jul 12, 06:20 UTCJul 12, 06:55 UTC35m
2026-07-11 CLX7306 - Jul 11, 15:40 UTCJul 12, 03:35 UTC11h 55m
2026-07-10 CLX9015 ICN → LUX Jul 10, 18:55 UTCJul 11, 09:45 UTC14h 51m
2026-07-10 CLX9005 - Jul 10, 15:35 UTCJul 10, 15:55 UTC20m
2026-07-10 CLX9005 - Jul 10, 05:25 UTCJul 10, 14:55 UTC9h 30m
2026-07-09 CLX63A SEA → LUX Jul 9, 10:25 UTCJul 9, 19:35 UTC9h 10m
2026-07-09 CLX3 - Jul 9, 04:25 UTCJul 9, 06:40 UTC2h 15m
2026-07-08 CLX3 - Jul 8, 14:30 UTCJul 9, 01:30 UTC11h 0m
2026-07-05 CLX86 - Jul 5, 06:40 UTCJul 5, 19:40 UTC13h 0m
2026-07-04 CLX7216 - Jul 4, 16:30 UTCJul 4, 16:50 UTC20m
2026-07-04 CLX7216 - Jul 4, 07:05 UTCJul 4, 10:50 UTC3h 45m
2026-07-03 CLX7955 HKG → HKG Jul 3, 16:40 UTCJul 4, 04:10 UTC11h 30m
2026-07-03 CLX7955 HKG → HKG Jul 3, 11:50 UTCJul 3, 12:05 UTC15m
2026-07-03 CLX7954 - Jul 3, 06:40 UTCJul 3, 07:15 UTC35m
2026-07-02 CLX7954 - Jul 2, 14:20 UTCJul 3, 01:25 UTC11h 5m
2026-07-02 CLX46L - Jul 2, 04:15 UTCJul 2, 11:20 UTC7h 5m
2026-07-01 CLX46L ANC → ORD Jul 1, 18:50 UTCJul 2, 00:15 UTC5h 25m
2026-07-01 CLX5483 - Jul 1, 09:50 UTCJul 1, 16:05 UTC6h 15m
2026-06-30 CLX4482 LUX → KMQ Jun 30, 14:45 UTCJul 1, 07:10 UTC16h 25m
2026-06-30 CLX962 - Jun 30, 06:35 UTCJun 30, 10:55 UTC4h 20m
2026-06-29 CLX962 - Jun 29, 20:30 UTCJun 29, 20:49 UTC20m
2026-06-29 CLX7337 - Jun 29, 17:24 UTCJun 29, 17:49 UTC25m
2026-06-29 CLX7337 - Jun 29, 13:19 UTCJun 29, 14:50 UTC1h 30m
2026-06-29 CLX7337 - Jun 29, 10:29 UTCJun 29, 10:44 UTC15m
2026-06-28 CLX7337 - Jun 28, 15:34 UTCJun 29, 09:54 UTC18h 20m
2026-06-27 CLX892 ICN → LUX Jun 27, 18:04 UTCJun 28, 08:19 UTC14h 15m
2026-06-27 CV6356 - Jun 27, 13:30 UTCJun 27, 15:24 UTC1h 55m
2026-06-26 CLX9425 - Jun 26, 21:59 UTCJun 27, 10:50 UTC12h 50m
2026-06-26 CLX22 - Jun 26, 15:20 UTCJun 26, 17:00 UTC1h 40m
2026-06-26 CLX22 - Jun 26, 08:30 UTCJun 26, 13:30 UTC5h 0m
2026-06-25 CLX22 - Jun 25, 13:09 UTCJun 26, 12:59 UTC23h 50m
2026-06-25 CLX9724 - Jun 25, 11:04 UTCJun 26, 11:00 UTC23h 55m
2026-06-25 CLX9724 - Jun 25, 10:09 UTCJun 26, 09:00 UTC22h 50m
2026-06-24 CLX671 ICN → LUX Jun 24, 16:19 UTCJun 25, 07:09 UTC14h 50m
2026-06-24 CLX6353 - Jun 24, 10:30 UTCJun 24, 12:34 UTC2h 5m
2026-06-23 CLX9422 LUX → NRT Jun 23, 19:29 UTCJun 24, 07:44 UTC12h 15m
2026-06-23 CLX278 HKG → ANC Jun 23, 08:59 UTCJun 23, 16:20 UTC7h 20m
2026-06-23 CLX278 HKG → ANC Jun 23, 00:50 UTCJun 23, 06:04 UTC5h 15m
2026-06-22 CLX278 HKG → ANC Jun 22, 14:59 UTCJun 22, 23:29 UTC8h 30m
2026-06-22 CLX278 HKG → ANC Jun 22, 14:14 UTCJun 22, 14:24 UTC10m
2026-06-22 CLX4327 - Jun 22, 10:49 UTCJun 22, 11:19 UTC30m
2026-06-21 CLX4327 - Jun 21, 21:19 UTCJun 22, 06:15 UTC8h 55m
2026-06-21 CLX86 - Jun 21, 01:59 UTCJun 21, 15:40 UTC13h 40m
2026-06-20 CLX7206 - Jun 20, 18:59 UTCJun 20, 19:09 UTC10m
2026-06-20 CLX7216 KUL → LUX Jun 20, 15:44 UTCJun 20, 16:00 UTC15m
2026-06-20 CLX7216 KUL → LUX Jun 20, 06:19 UTCJun 20, 10:04 UTC3h 45m

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?
Yes. Mode-S 4D0104 is currently airborne.
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 CLX287, CLX278, CLX9005, CLX9425, CLX7355.