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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 1d ago
Flights observed
130
Distinct callsigns
2
Country
DE
Last broadcast
1d 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 - 129 2026-07-16
EFMPY - 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 DEMPY FDH → FDH Jul 16, 16:40 UTCJul 16, 17:25 UTC45m
2026-07-16 DEMPY - Jul 16, 13:30 UTCJul 16, 15:45 UTC2h 15m
2026-07-13 DEMPY FDH → FDH Jul 13, 16:40 UTCJul 13, 17:50 UTC1h 10m
2026-07-13 DEMPY FDH → FDH Jul 13, 13:00 UTCJul 13, 15:25 UTC2h 25m
2026-07-13 DEMPY - Jul 13, 06:55 UTCJul 13, 08:45 UTC1h 50m
2026-07-12 DEMPY - Jul 12, 16:01 UTCJul 12, 17:30 UTC1h 30m
2026-07-12 DEMPY - Jul 12, 12:35 UTCJul 12, 14:05 UTC1h 30m
2026-07-12 DEMPY - Jul 12, 10:20 UTCJul 12, 10:50 UTC30m
2026-07-11 DEMPY - Jul 11, 09:30 UTCJul 11, 10:25 UTC55m
2026-07-10 DEMPY - Jul 10, 16:45 UTCJul 10, 17:35 UTC50m
2026-07-10 DEMPY - Jul 10, 13:10 UTCJul 10, 14:55 UTC1h 45m
2026-07-10 DEMPY ESS → FDH Jul 10, 07:50 UTCJul 10, 10:50 UTC3h 0m
2026-07-09 DEMPY FMO → ESS Jul 9, 17:20 UTCJul 9, 18:00 UTC40m
2026-07-09 DEMPY - Jul 9, 12:55 UTCJul 9, 15:25 UTC2h 30m
2026-07-09 DEMPY - Jul 9, 12:15 UTCJul 9, 12:50 UTC35m
2026-07-08 DEMPY - Jul 8, 16:05 UTCJul 8, 17:55 UTC1h 50m
2026-07-08 DEMPY - Jul 8, 14:35 UTCJul 8, 15:05 UTC30m
2026-07-08 DEMPY - Jul 8, 13:05 UTCJul 8, 13:30 UTC25m
2026-07-08 DEMPY - Jul 8, 11:00 UTCJul 8, 12:10 UTC1h 10m
2026-07-06 DEMPY - Jul 6, 16:20 UTCJul 6, 18:00 UTC1h 40m
2026-07-06 DEMPY - Jul 6, 07:05 UTCJul 6, 08:50 UTC1h 45m
2026-07-05 DEMPY - Jul 5, 14:20 UTCJul 5, 15:00 UTC40m
2026-07-05 DEMPY - Jul 5, 10:20 UTCJul 5, 11:20 UTC1h 0m
2026-07-03 DEMPY FDH → FDH Jul 3, 16:00 UTCJul 3, 16:45 UTC45m
2026-07-03 DEMPY - Jul 3, 11:35 UTCJul 3, 12:40 UTC1h 5m
2026-07-02 DEMPY FDH → FDH Jul 2, 15:55 UTCJul 2, 16:45 UTC50m
2026-07-02 DEMPY FDH → FDH Jul 2, 13:10 UTCJul 2, 13:40 UTC30m
2026-07-02 DEMPY - Jul 2, 11:00 UTCJul 2, 12:20 UTC1h 20m
2026-07-02 DEMPY FDH → FDH Jul 2, 06:55 UTCJul 2, 08:45 UTC1h 50m
2026-07-01 DEMPY FDH → FDH Jul 1, 16:35 UTCJul 1, 18:35 UTC2h 0m
2026-06-30 DEMPY - Jun 30, 13:15 UTCJun 30, 14:10 UTC55m
2026-06-30 DEMPY - Jun 30, 09:55 UTCJun 30, 10:45 UTC50m
2026-06-30 DEMPY FDH → FDH Jun 30, 07:15 UTCJun 30, 08:55 UTC1h 40m
2026-06-29 DEMPY - Jun 29, 09:29 UTCJun 29, 10:34 UTC1h 5m
2026-06-28 DEMPY FDH → FDH Jun 28, 09:45 UTCJun 28, 10:50 UTC1h 5m
2026-06-25 DEMPY - Jun 25, 15:24 UTCJun 25, 15:59 UTC35m
2026-06-25 DEMPY - Jun 25, 14:04 UTCJun 25, 14:50 UTC45m
2026-06-25 DEMPY - Jun 25, 12:30 UTCJun 25, 13:09 UTC40m
2026-06-25 DEMPY - Jun 25, 11:25 UTCJun 25, 11:59 UTC35m
2026-06-24 DEMPY LHA → FDH Jun 24, 17:34 UTCJun 24, 19:20 UTC1h 45m
2026-06-24 DEMPY FDH → LHA Jun 24, 15:54 UTCJun 24, 16:59 UTC1h 5m
2026-06-24 DEMPY - Jun 24, 14:29 UTCJun 24, 15:14 UTC45m
2026-06-22 DEMPY - Jun 22, 07:14 UTCJun 22, 08:50 UTC1h 35m
2026-06-21 DEMPY FDH → FDH Jun 21, 14:40 UTCJun 21, 15:44 UTC1h 5m
2026-06-21 DEMPY - Jun 21, 10:19 UTCJun 21, 11:40 UTC1h 20m
2026-06-21 DEMPY - Jun 21, 08:40 UTCJun 21, 09:35 UTC55m
2026-06-20 DEMPY - Jun 20, 16:00 UTCJun 20, 17:19 UTC1h 20m
2026-06-20 DEMPY - Jun 20, 13:09 UTCJun 20, 14:35 UTC1h 25m
2026-06-20 DEMPY FDH → FDH Jun 20, 08:59 UTCJun 20, 09:54 UTC55m
2026-06-19 DEMPY FDH → FDH Jun 19, 06:59 UTCJun 19, 09:24 UTC2h 25m

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 1d 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.