Apparatus

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sensors Mode-S transponder

3C644A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIBJ · AIRBUS A-319

Hex
3C644A
Octal
17062112
Decimal
3,957,834
Country
DE
Tail
D-AIBJ
Type
A319
Broadcasting now · callsign DLH5TV · 11,050 ft
Flights observed
605
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Current position

3C644A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C644A 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
DLH8KF - 11 2026-06-30
DLH9MA - 10 2026-06-30
DLH5AL - 10 2026-07-17
DLH062 - 10 2026-07-17
DLH839 Lufthansa 7 2026-06-17
DLH5HC - 7 2026-06-17
DLH958 - 6 2026-07-13
DLH5TT - 6 2026-07-14
DLH5LY - 6 2026-07-16
DLH51A - 6 2026-07-12
DLH3PX - 6 2026-07-16
DLH1558 - 6 2026-07-08
DLH5NC Lufthansa 5 2026-05-15
DLH3XN - 5 2026-06-22
DLH3TT - 5 2026-07-14
DLH2NJ - 5 2026-07-17
DLH2MM - 5 2026-06-22
DLH1KN Lufthansa 5 2026-06-12
DLH1559 - 5 2026-07-08
DLH07Y - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 DLH11J - Jul 18, 09:05 UTCJul 18, 10:30 UTC1h 25m
2026-07-18 DLH03T OPO → FRA Jul 18, 06:15 UTCJul 18, 07:45 UTC1h 30m
2026-07-17 DLH6K ZRH → FRA Jul 17, 18:25 UTCJul 17, 19:09 UTC45m
2026-07-17 DLH2NJ FRA → ZRH Jul 17, 16:40 UTCJul 17, 17:20 UTC40m
2026-07-17 DLH7EL - Jul 17, 14:04 UTCJul 17, 15:00 UTC55m
2026-07-17 DLH1HE - Jul 17, 11:39 UTCJul 17, 12:50 UTC1h 10m
2026-07-17 DLH5AL - Jul 17, 08:49 UTCJul 17, 09:30 UTC40m
2026-07-17 DLH062 - Jul 17, 07:14 UTCJul 17, 07:50 UTC35m
2026-07-17 DLH3WT BUD → FRA Jul 17, 04:14 UTCJul 17, 05:39 UTC1h 25m
2026-07-16 DLH9857 ZRH → BUD Jul 16, 18:05 UTCJul 16, 19:20 UTC1h 15m
2026-07-16 DLH2NJ FRA → ZRH Jul 16, 16:25 UTCJul 16, 17:00 UTC35m
2026-07-16 DLH3PX LIN → FRA Jul 16, 13:34 UTCJul 16, 14:29 UTC55m
2026-07-16 DLH5LY FRA → LIN Jul 16, 11:54 UTCJul 16, 12:49 UTC55m
2026-07-16 DLH5YU NUE → FRA Jul 16, 09:45 UTCJul 16, 10:15 UTC30m
2026-07-16 DLH3KK FRA → NUE Jul 16, 08:30 UTCJul 16, 08:55 UTC25m
2026-07-16 DLH5RP - Jul 16, 06:45 UTCJul 16, 07:10 UTC25m
2026-07-16 DLH3XA FRA → LUX Jul 16, 05:10 UTCJul 16, 05:35 UTC25m
2026-07-15 DLH161 - Jul 15, 16:40 UTCJul 15, 17:30 UTC50m
2026-07-15 DLH6CR FRA → GWT Jul 15, 14:50 UTCJul 15, 15:40 UTC50m
2026-07-15 DLH3F - Jul 15, 12:55 UTCJul 15, 13:35 UTC40m
2026-07-15 DLH36E FRA → CDG Jul 15, 11:00 UTCJul 15, 11:55 UTC55m
2026-07-15 DLH5AL DRS → FRA Jul 15, 08:50 UTCJul 15, 09:40 UTC50m
2026-07-15 DLH062 - Jul 15, 07:15 UTCJul 15, 07:50 UTC35m
2026-07-15 DLH9YA POZ → FRA Jul 15, 04:40 UTCJul 15, 05:50 UTC1h 10m
2026-07-14 DLH5CK FRA → POZ Jul 14, 19:35 UTCJul 14, 20:30 UTC55m
2026-07-14 DLH2WR POZ → FRA Jul 14, 13:10 UTCJul 14, 14:20 UTC1h 10m
2026-07-14 DLH3TT - Jul 14, 11:25 UTCJul 14, 12:20 UTC55m
2026-07-14 DLH5AL - Jul 14, 09:20 UTCJul 14, 10:10 UTC50m
2026-07-14 DLH062 - Jul 14, 07:40 UTCJul 14, 08:20 UTC40m
2026-07-14 DLH5TT - Jul 14, 05:05 UTCJul 14, 06:15 UTC1h 10m
2026-07-13 DLH958 FRA → BHX Jul 13, 19:10 UTCJul 13, 20:25 UTC1h 15m
2026-07-13 DLH6KV - Jul 13, 16:25 UTCJul 13, 18:05 UTC1h 40m
2026-07-13 DLH8VU CLJ → FRA Jul 13, 13:35 UTCJul 13, 15:20 UTC1h 45m
2026-07-13 DLH323 - Jul 13, 09:10 UTCJul 13, 11:15 UTC2h 5m
2026-07-13 DLH322 - Jul 13, 06:20 UTCJul 13, 07:55 UTC1h 35m
2026-07-13 DLH07Y SZG → FRA Jul 13, 04:10 UTCJul 13, 04:55 UTC45m
2026-07-12 DLH51A FRA → SZG Jul 12, 19:25 UTCJul 12, 20:05 UTC40m
2026-07-12 DLH4XA FRA → DRS Jul 12, 16:05 UTCJul 12, 17:45 UTC1h 40m
2026-07-12 DLH8RP WRO → FRA Jul 12, 13:25 UTCJul 12, 14:50 UTC1h 25m
2026-07-12 DLH1A - Jul 12, 09:35 UTCJul 12, 10:15 UTC40m
2026-07-12 DLH2UX FRA → AMS Jul 12, 07:40 UTCJul 12, 08:30 UTC50m
2026-07-12 DLH3KV - Jul 12, 04:15 UTCJul 12, 05:01 UTC45m
2026-07-11 DLH2HY FRA → DRS Jul 11, 20:30 UTCJul 11, 21:10 UTC40m
2026-07-11 DLH6K ZRH → FRA Jul 11, 18:10 UTCJul 11, 18:50 UTC40m
2026-07-11 DLH2NJ FRA → ZRH Jul 11, 16:30 UTCJul 11, 17:00 UTC30m
2026-07-11 DLH9AV - Jul 11, 13:30 UTCJul 11, 15:05 UTC1h 35m
2026-07-11 DLH7XP - Jul 11, 10:50 UTCJul 11, 12:10 UTC1h 20m
2026-07-11 DLH341 - Jul 11, 07:30 UTCJul 11, 09:10 UTC1h 40m
2026-07-11 DLH340 - Jul 11, 04:45 UTCJul 11, 06:20 UTC1h 35m
2026-07-10 DLH1YM VCE → FRA Jul 10, 17:50 UTCJul 10, 19:00 UTC1h 10m

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-AIBJ page for operator, model, and routing details .

Mode-S 3C644A frequently asked

What is Mode-S code 3C644A?
3C644A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIBJ.
Where is Mode-S 3C644A registered?
Mode-S code 3C644A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C644A broadcasting right now?
Yes. Mode-S 3C644A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C644A, octal 17062112, decimal 3,957,834.
What flights does 3C644A operate?
Mode-S 3C644A has broadcast 20 distinct callsigns, including DLH8KF, DLH9MA, DLH5AL, DLH062, DLH839.