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sensors Mode-S transponder

3D25F6

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-EMPY · DIAMOND DA-20

Hex
3D25F6
Octal
17222766
Decimal
4,007,414
Country
DE
Tail
D-EMPY
Type
DV20
No current signal · last broadcast 7h ago
Flights observed
56
Distinct callsigns
2
Country
DE
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 3D25F6.

Country allocation

The ICAO 24-bit address 3D25F6 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 2 distinct

Callsign Airline Flights Last seen
DEMPY - 55 2026-06-02
EFMPY - 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DEMPY FDH → FDH Jun 2, 11:45 UTCJun 2, 12:40 UTC55m
2026-06-02 DEMPY FDH → FDH Jun 2, 09:55 UTCJun 2, 10:50 UTC55m
2026-06-02 DEMPY - Jun 2, 06:20 UTCJun 2, 07:15 UTC55m
2026-06-01 DEMPY FDH → FDH Jun 1, 15:15 UTCJun 1, 16:40 UTC1h 25m
2026-05-30 DEMPY - May 30, 14:00 UTCMay 30, 14:50 UTC50m
2026-05-30 DEMPY - May 30, 12:15 UTCMay 30, 13:05 UTC50m
2026-05-29 DEMPY FDH → FDH May 29, 07:15 UTCMay 29, 09:15 UTC2h 0m
2026-05-27 DEMPY FDH → FDH May 27, 09:10 UTCMay 27, 10:05 UTC55m
2026-05-24 DEMPY FDH → FDH May 24, 13:45 UTCMay 24, 15:40 UTC1h 55m
2026-05-24 DEMPY FDH → FDH May 24, 11:40 UTCMay 24, 12:45 UTC1h 5m
2026-05-22 DEMPY FDH → FDH May 22, 13:10 UTCMay 22, 14:35 UTC1h 25m
2026-05-22 DEMPY FDH → FDH May 22, 07:35 UTCMay 22, 09:10 UTC1h 35m
2026-05-21 DEMPY FDH → FDH May 21, 15:50 UTCMay 21, 17:05 UTC1h 15m
2026-05-19 DEMPY FDH → FDH May 19, 15:45 UTCMay 19, 16:45 UTC1h 0m
2026-05-17 DEMPY - May 17, 16:10 UTCMay 17, 16:45 UTC35m
2026-05-17 DEMPY - May 17, 07:05 UTCMay 17, 07:30 UTC25m
2026-05-15 DEMPY FDH → FDH May 15, 16:25 UTCMay 15, 17:20 UTC55m
2026-05-15 DEMPY - May 15, 13:40 UTCMay 15, 15:50 UTC2h 9m
2026-05-15 DEMPY FDH → FDH May 15, 12:40 UTCMay 15, 13:05 UTC25m
2026-05-15 DEMPY FDH → FDH May 15, 11:30 UTCMay 15, 12:05 UTC35m
2026-05-13 DEMPY FDH → FDH May 13, 15:30 UTCMay 13, 16:40 UTC1h 10m
2026-05-13 DEMPY FDH → FDH May 13, 13:45 UTCMay 13, 14:45 UTC1h 0m
2026-05-12 DEMPY FDH → FDH May 12, 16:00 UTCMay 12, 17:10 UTC1h 10m
2026-05-09 DEMPY FDH → FDH May 9, 13:05 UTCMay 9, 14:10 UTC1h 5m
2026-05-09 DEMPY - May 9, 10:55 UTCMay 9, 12:25 UTC1h 30m
2026-05-07 DEMPY - May 7, 15:25 UTCMay 7, 16:40 UTC1h 15m
2026-05-06 DEMPY - May 6, 17:00 UTCMay 6, 17:25 UTC25m
2026-05-06 DEMPY - May 6, 15:20 UTCMay 6, 15:40 UTC20m
2026-05-06 DEMPY FDH → FDH May 6, 13:00 UTCMay 6, 13:50 UTC50m
2026-05-06 DEMPY FDH → FDH May 6, 09:55 UTCMay 6, 10:50 UTC55m
2026-05-05 DEMPY - May 5, 16:25 UTCMay 5, 17:05 UTC40m
2026-05-05 DEMPY FDH → FDH May 5, 14:00 UTCMay 5, 15:01 UTC1h 0m
2026-05-04 DEMPY FDH → FDH May 4, 16:55 UTCMay 4, 18:05 UTC1h 10m
2026-05-04 DEMPY FDH → FDH May 4, 14:40 UTCMay 4, 16:20 UTC1h 40m
2026-05-02 DEMPY - May 2, 15:00 UTCMay 2, 15:55 UTC55m
2026-05-02 DEMPY - May 2, 13:30 UTCMay 2, 14:25 UTC55m
2026-05-02 DEMPY FDH → FDH May 2, 10:05 UTCMay 2, 12:55 UTC2h 50m
2026-05-02 DEMPY FDH → FDH May 2, 07:20 UTCMay 2, 08:40 UTC1h 20m
2026-05-01 DEMPY FDH → FDH May 1, 10:55 UTCMay 1, 11:40 UTC45m
2026-05-01 DEMPY - May 1, 08:30 UTCMay 1, 09:50 UTC1h 20m
2026-04-29 DEMPY - Apr 29, 16:00 UTCApr 29, 17:55 UTC1h 55m
2026-04-29 DEMPY - Apr 29, 08:15 UTCApr 29, 10:05 UTC1h 51m
2026-04-28 DEMPY - Apr 28, 14:30 UTCApr 28, 15:00 UTC30m
2026-04-26 EFMPY - Apr 26, 14:00 UTCApr 26, 14:50 UTC50m
2026-04-26 DEMPY - Apr 26, 08:40 UTCApr 26, 09:20 UTC40m
2026-04-21 DEMPY FDH → FDH Apr 21, 16:40 UTCApr 21, 17:45 UTC1h 5m
2026-04-21 DEMPY - Apr 21, 13:35 UTCApr 21, 16:01 UTC2h 25m
2026-04-18 DEMPY FDH → FDH Apr 18, 10:05 UTCApr 18, 11:40 UTC1h 35m
2026-04-17 DEMPY FDH → FDH Apr 17, 14:05 UTCApr 17, 14:55 UTC49m
2026-04-17 DEMPY - Apr 17, 09:20 UTCApr 17, 09:50 UTC30m

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

Mode-S 3D25F6 frequently asked

What is Mode-S code 3D25F6?
3D25F6 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-EMPY.
Where is Mode-S 3D25F6 registered?
Mode-S code 3D25F6 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D25F6 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D25F6, octal 17222766, decimal 4,007,414.
What flights does 3D25F6 operate?
Mode-S 3D25F6 has broadcast 2 distinct callsigns, including DEMPY, EFMPY.