sensors Mode-S transponder
4D0102
ICAO 24-bit transponder address · allocated to Luxembourg
Currently assigned to LX-VCC · BOEING 747-8
- Hex
- 4D0102
- Octal
- 23200402
- Decimal
- 5,046,530
- Country
- LU
- Tail
- LX-VCC
- Type
- B748
- Flights observed
- 243
- Distinct callsigns
- 20
- Country
- LU
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 4D0102 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 |
|---|---|---|---|
| CLX7334 | - | 15 | 2026-07-10 |
| CLX352 | - | 11 | 2026-07-11 |
| CLX261 | - | 9 | 2026-07-09 |
| CLX278 | - | 8 | 2026-04-14 |
| CLX942 | - | 6 | 2026-06-14 |
| CLX753 | Cargolux | 6 | 2026-05-25 |
| CLX7355 | Cargolux | 6 | 2026-04-18 |
| CLX54 | - | 6 | 2026-05-26 |
| CLX342 | - | 6 | 2026-07-13 |
| CLX9422 | - | 5 | 2026-04-15 |
| CLX85 | - | 5 | 2026-05-26 |
| CLX7567 | - | 5 | 2026-06-14 |
| CLX7213 | - | 5 | 2026-07-01 |
| CLX64 | - | 5 | 2026-07-02 |
| CLX976 | - | 4 | 2026-05-28 |
| CLX9016 | - | 4 | 2026-07-05 |
| CLX7623 | Cargolux | 4 | 2026-05-27 |
| CLX39 | - | 4 | 2026-04-29 |
| CLX37 | - | 4 | 2026-04-30 |
| CLX251 | Cargolux | 4 | 2026-04-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CLX9 | LUX → JFK | Jul 13, 18:00 UTC | Jul 14, 01:20 UTC | 7h 20m |
| 2026-07-13 | CLX342 | - | Jul 13, 05:25 UTC | Jul 13, 13:45 UTC | 8h 20m |
| 2026-07-12 | CLX342 | - | Jul 12, 19:45 UTC | Jul 13, 02:55 UTC | 7h 10m |
| 2026-07-12 | CLX342 | HKG → ANC | Jul 12, 08:55 UTC | Jul 12, 18:20 UTC | 9h 25m |
| 2026-07-11 | CLX4796 | - | Jul 11, 18:50 UTC | Jul 12, 05:50 UTC | 11h 0m |
| 2026-07-11 | CLX352 | BUD → LUX | Jul 11, 13:10 UTC | Jul 11, 14:35 UTC | 1h 25m |
| 2026-07-11 | CLX352 | - | Jul 11, 08:30 UTC | Jul 11, 11:45 UTC | 3h 15m |
| 2026-07-10 | CLX352 | - | Jul 10, 23:00 UTC | Jul 10, 23:25 UTC | 25m |
| 2026-07-10 | CLX7334 | - | Jul 10, 19:30 UTC | Jul 10, 19:45 UTC | 15m |
| 2026-07-10 | CLX7334 | - | Jul 10, 16:40 UTC | Jul 10, 17:40 UTC | 1h 0m |
| 2026-07-10 | CLX7334 | - | Jul 10, 12:20 UTC | Jul 10, 14:15 UTC | 1h 55m |
| 2026-07-10 | CLX7334 | - | Jul 10, 09:25 UTC | Jul 10, 09:45 UTC | 20m |
| 2026-07-10 | CLX7334 | - | Jul 10, 03:35 UTC | Jul 10, 08:55 UTC | 5h 20m |
| 2026-07-09 | CLX4M | - | Jul 9, 17:40 UTC | Jul 10, 00:05 UTC | 6h 25m |
| 2026-07-09 | CLX261 | JFK → LUX | Jul 9, 07:10 UTC | Jul 9, 14:05 UTC | 6h 55m |
| 2026-07-09 | CLX261 | - | Jul 9, 02:00 UTC | Jul 9, 04:15 UTC | 2h 15m |
| 2026-07-08 | CLX261 | - | Jul 8, 16:55 UTC | Jul 9, 00:05 UTC | 7h 10m |
| 2026-07-08 | CLX261 | HKG → ANC | Jul 8, 05:55 UTC | Jul 8, 15:30 UTC | 9h 35m |
| 2026-07-08 | CLX4802 | - | Jul 8, 02:35 UTC | Jul 8, 03:00 UTC | 25m |
| 2026-07-07 | CLX4802 | - | Jul 7, 16:05 UTC | Jul 7, 19:50 UTC | 3h 45m |
| 2026-07-07 | CLX52 | - | Jul 7, 08:05 UTC | Jul 7, 12:30 UTC | 4h 25m |
| 2026-07-06 | CLX52 | - | Jul 6, 12:50 UTC | Jul 7, 12:30 UTC | 23h 40m |
| 2026-07-06 | CLX7601 | - | Jul 6, 10:35 UTC | Jul 7, 10:30 UTC | 23h 55m |
| 2026-07-06 | CLX7601 | - | Jul 6, 09:55 UTC | Jul 7, 08:30 UTC | 22h 35m |
| 2026-07-06 | CLX4P | - | Jul 6, 02:10 UTC | Jul 6, 06:30 UTC | 4h 20m |
| 2026-07-05 | CLX9016 | - | Jul 5, 17:30 UTC | Jul 5, 21:10 UTC | 3h 40m |
| 2026-07-05 | CLX9016 | TPE → BKK | Jul 5, 12:20 UTC | Jul 5, 15:20 UTC | 3h 0m |
| 2026-07-04 | CLX9006 | - | Jul 4, 18:45 UTC | Jul 5, 09:50 UTC | 15h 5m |
| 2026-07-04 | CLX352 | BUD → LUX | Jul 4, 13:45 UTC | Jul 4, 15:15 UTC | 1h 30m |
| 2026-07-04 | CLX352 | - | Jul 4, 08:45 UTC | Jul 4, 12:10 UTC | 3h 25m |
| 2026-07-03 | CLX352 | - | Jul 3, 23:20 UTC | Jul 3, 23:45 UTC | 25m |
| 2026-07-03 | CLX7334 | - | Jul 3, 20:20 UTC | Jul 3, 20:40 UTC | 20m |
| 2026-07-03 | CLX7334 | - | Jul 3, 12:55 UTC | Jul 3, 14:55 UTC | 2h 0m |
| 2026-07-02 | CLX7334 | - | Jul 2, 21:50 UTC | Jul 3, 10:55 UTC | 13h 5m |
| 2026-07-02 | CLX64 | - | Jul 2, 12:20 UTC | Jul 2, 16:55 UTC | 4h 35m |
| 2026-07-01 | CLX64 | - | Jul 1, 20:35 UTC | Jul 2, 16:55 UTC | 20h 20m |
| 2026-07-01 | CLX7213 | - | Jul 1, 17:40 UTC | Jul 1, 18:00 UTC | 20m |
| 2026-07-01 | CLX7213 | - | Jul 1, 07:55 UTC | Jul 1, 12:00 UTC | 4h 5m |
| 2026-06-30 | CLX9522 | HKG → LUX | Jun 30, 12:25 UTC | Jul 1, 04:20 UTC | 15h 55m |
| 2026-06-30 | CLX9522 | HKG → LUX | Jun 30, 07:25 UTC | Jun 30, 07:40 UTC | 15m |
| 2026-06-30 | CLX9521 | - | Jun 30, 04:30 UTC | Jun 30, 05:05 UTC | 35m |
| 2026-06-30 | CLX9521 | - | Jun 30, 01:30 UTC | Jun 30, 02:00 UTC | 30m |
| 2026-06-29 | CLX9521 | - | Jun 29, 10:20 UTC | Jun 29, 22:00 UTC | 11h 40m |
| 2026-06-28 | CLX9016 | - | Jun 28, 17:55 UTC | Jun 29, 07:15 UTC | 13h 20m |
| 2026-06-28 | CLX9016 | TPE → BKK | Jun 28, 12:50 UTC | Jun 28, 15:55 UTC | 3h 5m |
| 2026-06-27 | CLX9006 | - | Jun 27, 18:45 UTC | Jun 28, 09:55 UTC | 15h 10m |
| 2026-06-27 | CLX272 | ORD → LUX | Jun 27, 06:35 UTC | Jun 27, 14:00 UTC | 7h 25m |
| 2026-06-26 | CLX272 | ANC → ORD | Jun 26, 20:59 UTC | Jun 27, 02:25 UTC | 5h 25m |
| 2026-06-26 | CLX272 | HKG → ANC | Jun 26, 09:35 UTC | Jun 26, 18:49 UTC | 9h 15m |
| 2026-06-26 | CLX4324 | DMM → HKG | Jun 26, 05:10 UTC | Jun 26, 05:44 UTC | 35m |
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-VCC page for operator, model, and routing details .