Apparatus

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sensors Mode-S transponder

3C6571

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIKQ · AIRBUS A-330-300

Hex
3C6571
Octal
17062561
Decimal
3,958,129
Country
DE
Tail
D-AIKQ
Type
A333
No current signal · last broadcast Jul 21, 16:10 UTC
Flights observed
113
Distinct callsigns
19
Country
DE
Last broadcast
Jul 21, 16:10 UTC

Last known position

Most recent position reported by Mode-S 3C6571.

Country allocation

The ICAO 24-bit address 3C6571 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 19 distinct

Callsign Airline Flights Last seen
DLH404 - 31 2026-06-25
DLH405 - 29 2026-06-26
DLH409 - 8 2026-06-28
DLH408 - 8 2026-06-28
DLH449 - 6 2026-06-22
DLH448 - 6 2026-06-22
DLH439 - 6 2026-06-14
DLH9911 - 2 2026-07-21
DLH651 Lufthansa 2 2026-04-24
DLH646 Lufthansa 2 2026-04-25
DLH595 - 2 2026-06-27
DLH594 Lufthansa 2 2026-05-30
DLH561 Lufthansa 2 2026-05-29
DLH560 Lufthansa 2 2026-05-28
DLH9920 Lufthansa 1 2026-04-20
DLH9910 - 1 2026-06-30
DLH491 - 1 2026-06-12
DLH490 Lufthansa 1 2026-06-12
DLH438 Lufthansa 1 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 DLH9911 - Jul 21, 15:00 UTCJul 21, 16:10 UTC1h 10m
2026-06-30 DLH9910 - Jun 30, 07:10 UTCJun 30, 08:10 UTC1h 0m
2026-06-28 DLH409 - Jun 28, 20:45 UTCJun 29, 04:14 UTC7h 30m
2026-06-28 DLH408 FRA → RDU Jun 28, 08:50 UTCJun 28, 17:30 UTC8h 40m
2026-06-27 DLH595 FRA → FRA Jun 27, 10:14 UTCJun 28, 03:45 UTC17h 30m
2026-06-26 DLH405 - Jun 26, 03:15 UTCJun 26, 09:59 UTC6h 45m
2026-06-25 DLH404 FRA → JFK Jun 25, 16:29 UTCJun 26, 00:35 UTC8h 5m
2026-06-23 DLH409 - Jun 23, 20:49 UTCJun 24, 04:10 UTC7h 20m
2026-06-23 DLH408 FRA → RDU Jun 23, 08:59 UTCJun 23, 18:39 UTC9h 40m
2026-06-22 DLH449 STL → FRA Jun 22, 21:00 UTCJun 23, 05:09 UTC8h 10m
2026-06-22 DLH448 - Jun 22, 09:10 UTCJun 22, 18:35 UTC9h 25m
2026-06-21 DLH405 JFK → FRA Jun 21, 03:05 UTCJun 21, 10:04 UTC7h 0m
2026-06-20 DLH404 FRA → JFK Jun 20, 16:00 UTCJun 20, 23:59 UTC8h 0m
2026-06-20 DLH405 JFK → FRA Jun 20, 02:54 UTCJun 20, 09:49 UTC6h 55m
2026-06-19 DLH404 FRA → JFK Jun 19, 15:34 UTCJun 19, 23:44 UTC8h 10m
2026-06-19 DLH405 JFK → FRA Jun 19, 02:24 UTCJun 19, 09:24 UTC7h 0m
2026-06-18 DLH404 FRA → JFK Jun 18, 15:40 UTCJun 18, 23:40 UTC8h 0m
2026-06-18 DLH405 JFK → FRA Jun 18, 02:55 UTCJun 18, 09:55 UTC7h 0m
2026-06-17 DLH404 - Jun 17, 15:40 UTCJun 17, 23:45 UTC8h 5m
2026-06-16 DLH409 - Jun 16, 20:35 UTCJun 17, 04:05 UTC7h 30m
2026-06-16 DLH408 FRA → RDU Jun 16, 08:55 UTCJun 16, 17:49 UTC8h 55m
2026-06-14 DLH439 DFW → FRA Jun 14, 21:35 UTCJun 15, 06:45 UTC9h 10m
2026-06-14 DLH438 FRA → DFW Jun 14, 08:50 UTCJun 14, 19:10 UTC10h 20m
2026-06-12 DLH491 - Jun 12, 21:55 UTCJun 13, 07:25 UTC9h 29m
2026-06-12 DLH490 FRA → SEA Jun 12, 09:50 UTCJun 12, 19:40 UTC9h 50m
2026-06-11 DLH409 - Jun 11, 20:05 UTCJun 12, 04:00 UTC7h 56m
2026-06-11 DLH408 FRA → RDU Jun 11, 08:40 UTCJun 11, 17:40 UTC9h 0m
2026-06-09 DLH409 RDU → FRA Jun 9, 19:40 UTCJun 10, 03:35 UTC7h 55m
2026-06-09 DLH408 FRA → RDU Jun 9, 08:50 UTCJun 9, 17:20 UTC8h 30m
2026-06-08 DLH449 ORD → DUS Jun 8, 21:25 UTCJun 9, 05:50 UTC8h 25m
2026-06-08 DLH448 FRA → STL Jun 8, 09:00 UTCJun 8, 18:15 UTC9h 15m
2026-06-07 DLH405 JFK → FRA Jun 7, 03:00 UTCJun 7, 10:00 UTC7h 0m
2026-06-06 DLH404 FRA → JFK Jun 6, 15:39 UTCJun 6, 23:35 UTC7h 55m
2026-06-06 DLH404 FRA → JFK Jun 6, 15:25 UTCJun 6, 15:30 UTC5m
2026-06-06 DLH405 JFK → FRA Jun 6, 02:15 UTCJun 6, 09:04 UTC6h 50m
2026-06-05 DLH404 FRA → JFK Jun 5, 15:45 UTCJun 5, 23:30 UTC7h 45m
2026-06-05 DLH405 JFK → FRA Jun 5, 03:05 UTCJun 5, 10:05 UTC7h 0m
2026-06-04 DLH404 FRA → JFK Jun 4, 16:30 UTCJun 5, 00:30 UTC8h 0m
2026-06-04 DLH405 JFK → FRA Jun 4, 02:30 UTCJun 4, 09:35 UTC7h 5m
2026-06-03 DLH404 FRA → JFK Jun 3, 15:40 UTCJun 3, 23:40 UTC8h 0m
2026-06-03 DLH405 JFK → FRA Jun 3, 03:15 UTCJun 3, 10:00 UTC6h 45m
2026-06-02 DLH404 FRA → JFK Jun 2, 15:50 UTCJun 2, 23:15 UTC7h 25m
2026-06-01 DLH449 ORD → DUS Jun 1, 21:20 UTCJun 2, 05:25 UTC8h 5m
2026-06-01 DLH448 FRA → STL Jun 1, 09:00 UTCJun 1, 17:40 UTC8h 40m
2026-05-31 DLH449 ORD → DUS May 31, 20:35 UTCJun 1, 05:00 UTC8h 25m
2026-05-31 DLH448 FRA → STL May 31, 09:10 UTCMay 31, 18:10 UTC9h 0m
2026-05-30 DLH594 FRA → PHC May 30, 09:55 UTCMay 30, 11:30 UTC1h 35m
2026-05-29 DLH561 LAD → FRA May 29, 21:20 UTCMay 30, 05:30 UTC8h 10m
2026-05-28 DLH560 FRA → LAD May 28, 20:05 UTCMay 29, 04:05 UTC8h 0m
2026-05-28 DLH405 JFK → FRA May 28, 02:45 UTCMay 28, 09:45 UTC7h 0m

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

Mode-S 3C6571 frequently asked

What is Mode-S code 3C6571?
3C6571 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIKQ.
Where is Mode-S 3C6571 registered?
Mode-S code 3C6571 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6571 broadcasting right now?
No active broadcast right now. Last signal was Jul 21, 16:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6571, octal 17062561, decimal 3,958,129.
What flights does 3C6571 operate?
Mode-S 3C6571 has broadcast 19 distinct callsigns, including DLH404, DLH405, DLH409, DLH408, DLH449.