Apparatus

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sensors Mode-S transponder

3C6446

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIBF · AIRBUS A-319

Hex
3C6446
Octal
17062106
Decimal
3,957,830
Country
DE
Tail
D-AIBF
Type
A319
No current signal · last broadcast 4h ago
Flights observed
603
Distinct callsigns
20
Country
DE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 3C6446.

Country allocation

The ICAO 24-bit address 3C6446 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
DLH3F - 7 2026-07-09
DLH36E - 7 2026-07-09
DLH9MA - 6 2026-07-11
DLH8NL - 6 2026-07-15
DLH8KF - 6 2026-07-11
DLH8C - 6 2026-07-15
DLH6VN - 6 2026-07-17
DLH5LY - 6 2026-07-12
DLH5KA Lufthansa 6 2026-07-17
DLH3PX - 6 2026-07-12
DLH25K Lufthansa 6 2026-07-17
DLH9YA - 5 2026-06-29
DLH6YY - 5 2026-06-21
DLH5TV - 5 2026-07-04
DLH5CK - 5 2026-06-28
DLH5AL - 5 2026-07-05
DLH3LF - 5 2026-06-21
DLH35N - 5 2026-07-17
DLH1KN - 5 2026-06-19
DLH1HF - 5 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH1CJ - Jul 17, 18:44 UTCJul 17, 20:10 UTC1h 25m
2026-07-17 DLH35N - Jul 17, 14:20 UTCJul 17, 15:29 UTC1h 10m
2026-07-17 DLH25K FRA → NTE Jul 17, 11:50 UTCJul 17, 13:10 UTC1h 20m
2026-07-17 DLH6VN NUE → FRA Jul 17, 07:25 UTCJul 17, 07:44 UTC20m
2026-07-17 DLH5KA FRA → BRU Jul 17, 05:25 UTCJul 17, 05:50 UTC25m
2026-07-16 DLH067 - Jul 16, 17:30 UTCJul 16, 18:15 UTC45m
2026-07-16 DLH066 FRA → DRS Jul 16, 15:45 UTCJul 16, 16:19 UTC35m
2026-07-16 DLH839 - Jul 16, 13:10 UTCJul 16, 14:15 UTC1h 5m
2026-07-16 DLH5HC FRA → BLL Jul 16, 11:15 UTCJul 16, 12:09 UTC55m
2026-07-16 DLH837 - Jul 16, 08:40 UTCJul 16, 09:50 UTC1h 10m
2026-07-16 DLH836 FRA → BLL Jul 16, 06:45 UTCJul 16, 07:45 UTC1h 0m
2026-07-16 DLH07Y - Jul 16, 04:05 UTCJul 16, 04:55 UTC50m
2026-07-15 DLH51A - Jul 15, 19:50 UTCJul 15, 20:30 UTC40m
2026-07-15 DLH7C ZRH → FRA Jul 15, 17:50 UTCJul 15, 18:30 UTC40m
2026-07-15 DLH2PP FRA → ZRH Jul 15, 15:00 UTCJul 15, 15:40 UTC40m
2026-07-15 DLH8C ZRH → FRA Jul 15, 13:05 UTCJul 15, 13:45 UTC40m
2026-07-15 DLH8NL FRA → ZRH Jul 15, 11:30 UTCJul 15, 12:00 UTC30m
2026-07-15 DLH5YU NUE → FRA Jul 15, 09:40 UTCJul 15, 10:15 UTC35m
2026-07-15 DLH3KK FRA → NUE Jul 15, 08:25 UTCJul 15, 08:50 UTC25m
2026-07-15 DLH88P - Jul 15, 04:50 UTCJul 15, 06:05 UTC1h 15m
2026-07-14 DLH55U FRA → NCE Jul 14, 19:25 UTCJul 14, 20:35 UTC1h 10m
2026-07-14 DLH6C ZRH → FRA Jul 14, 12:20 UTCJul 14, 12:55 UTC35m
2026-07-14 DLH1EN - Jul 14, 09:45 UTCJul 14, 10:15 UTC30m
2026-07-14 DLH1EN - Jul 14, 09:30 UTCJul 14, 09:35 UTC5m
2026-07-14 DLH247 MXP → FRA Jul 14, 07:15 UTCJul 14, 08:15 UTC1h 0m
2026-07-14 DLH4YF FRA → MXP Jul 14, 05:05 UTCJul 14, 06:00 UTC55m
2026-07-13 DLH1557 - Jul 13, 04:10 UTCJul 13, 06:05 UTC1h 55m
2026-07-12 DLH1556 - Jul 12, 18:35 UTCJul 12, 20:20 UTC1h 45m
2026-07-12 DLH3PX LIN → FRA Jul 12, 13:30 UTCJul 12, 14:25 UTC55m
2026-07-12 DLH5LY FRA → LIN Jul 12, 11:40 UTCJul 12, 12:30 UTC50m
2026-07-12 DLH6P PRG → FRA Jul 12, 07:15 UTCJul 12, 08:05 UTC50m
2026-07-12 DLH8RX FRA → PRG Jul 12, 05:30 UTCJul 12, 06:15 UTC45m
2026-07-11 DLH865 - Jul 11, 17:30 UTCJul 11, 19:10 UTC1h 40m
2026-07-11 DLH6LJ FRA → OSL Jul 11, 14:50 UTCJul 11, 16:30 UTC1h 40m
2026-07-11 DLH8C ZRH → FRA Jul 11, 13:00 UTCJul 11, 13:40 UTC40m
2026-07-11 DLH8NL FRA → ZRH Jul 11, 11:15 UTCJul 11, 11:50 UTC35m
2026-07-11 DLH9MA POZ → FRA Jul 11, 08:35 UTCJul 11, 09:35 UTC1h 0m
2026-07-11 DLH8KF FRA → POZ Jul 11, 06:40 UTCJul 11, 07:40 UTC1h 0m
2026-07-11 DLH2VR - Jul 11, 03:50 UTCJul 11, 04:55 UTC1h 5m
2026-07-10 DLH9AT - Jul 10, 19:00 UTCJul 10, 19:55 UTC55m
2026-07-10 DLH7C - Jul 10, 17:05 UTCJul 10, 17:45 UTC40m
2026-07-10 DLH2PP FRA → ZRH Jul 10, 15:15 UTCJul 10, 15:50 UTC35m
2026-07-10 DLH35N - Jul 10, 12:30 UTCJul 10, 13:40 UTC1h 10m
2026-07-10 DLH25K - Jul 10, 09:00 UTCJul 10, 10:15 UTC1h 15m
2026-07-10 DLH5RP LUX → FRA Jul 10, 07:00 UTCJul 10, 07:20 UTC20m
2026-07-10 DLH3XA FRA → LUX Jul 10, 05:15 UTCJul 10, 05:45 UTC30m
2026-07-09 DLH3WJ - Jul 9, 17:30 UTCJul 9, 18:50 UTC1h 20m
2026-07-09 DLH5RX - Jul 9, 15:30 UTCJul 9, 16:45 UTC1h 15m
2026-07-09 DLH3F - Jul 9, 13:30 UTCJul 9, 14:10 UTC40m
2026-07-09 DLH36E FRA → CDG Jul 9, 11:00 UTCJul 9, 11:50 UTC50m

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 D-AIBF page for operator, model, and routing details .

Mode-S 3C6446 frequently asked

What is Mode-S code 3C6446?
3C6446 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIBF.
Where is Mode-S 3C6446 registered?
Mode-S code 3C6446 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6446 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6446, octal 17062106, decimal 3,957,830.
What flights does 3C6446 operate?
Mode-S 3C6446 has broadcast 20 distinct callsigns, including DLH3F, DLH36E, DLH9MA, DLH8NL, DLH8KF.