Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3FF644

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-MMDG · AEROSPOOL WT-9 Dynamic

Hex
3FF644
Octal
17773104
Decimal
4,191,812
Country
DE
Tail
D-MMDG
Type
WT9
No current signal · last broadcast 4d ago
Flights observed
53
Distinct callsigns
1
Country
DE
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 3FF644.

Country allocation

The ICAO 24-bit address 3FF644 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 1 distinct

Callsign Airline Flights Last seen
DMMDG - 53 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DMMDG - Jul 13, 19:00 UTCJul 13, 19:35 UTC35m
2026-07-13 DMMDG - Jul 13, 14:55 UTCJul 13, 16:00 UTC1h 5m
2026-07-12 DMMDG - Jul 12, 16:35 UTCJul 12, 17:25 UTC50m
2026-07-12 DMMDG - Jul 12, 06:05 UTCJul 12, 07:01 UTC55m
2026-07-11 DMMDG - Jul 11, 18:20 UTCJul 11, 18:50 UTC30m
2026-07-11 DMMDG - Jul 11, 16:20 UTCJul 11, 16:35 UTC15m
2026-07-06 DMMDG - Jul 6, 18:25 UTCJul 6, 19:10 UTC45m
2026-07-06 DMMDG - Jul 6, 12:25 UTCJul 6, 13:25 UTC1h 0m
2026-07-05 DMMDG - Jul 5, 08:05 UTCJul 5, 09:55 UTC1h 50m
2026-07-03 DMMDG - Jul 3, 09:00 UTCJul 3, 10:45 UTC1h 45m
2026-06-29 DMMDG - Jun 29, 14:44 UTCJun 29, 15:19 UTC35m
2026-06-28 DMMDG - Jun 28, 16:35 UTCJun 28, 19:20 UTC2h 45m
2026-06-28 DMMDG - Jun 28, 15:40 UTCJun 28, 16:00 UTC20m
2026-06-28 DMMDG - Jun 28, 08:00 UTCJun 28, 11:09 UTC3h 10m
2026-06-26 DMMDG - Jun 26, 13:55 UTCJun 26, 14:35 UTC40m
2026-06-26 DMMDG - Jun 26, 06:09 UTCJun 26, 06:45 UTC35m
2026-06-25 DMMDG - Jun 25, 18:15 UTCJun 25, 19:09 UTC55m
2026-06-25 DMMDG - Jun 25, 15:34 UTCJun 25, 17:05 UTC1h 30m
2026-06-24 DMMDG - Jun 24, 13:34 UTCJun 24, 15:24 UTC1h 50m
2026-06-24 DMMDG - Jun 24, 05:40 UTCJun 24, 07:40 UTC2h 0m
2026-06-23 DMMDG - Jun 23, 15:09 UTCJun 23, 15:30 UTC20m
2026-06-23 DMMDG - Jun 23, 10:39 UTCJun 23, 12:35 UTC1h 55m
2026-06-23 DMMDG - Jun 23, 08:50 UTCJun 23, 09:40 UTC50m
2026-06-23 DMMDG - Jun 23, 07:15 UTCJun 23, 08:25 UTC1h 10m
2026-06-22 DMMDG - Jun 22, 09:14 UTCJun 22, 10:00 UTC45m
2026-06-22 DMMDG - Jun 22, 05:24 UTCJun 22, 06:05 UTC40m
2026-06-20 DMMDG - Jun 20, 08:29 UTCJun 20, 08:59 UTC30m
2026-06-19 DMMDG - Jun 19, 16:29 UTCJun 19, 17:19 UTC50m
2026-06-19 DMMDG - Jun 19, 09:19 UTCJun 19, 10:14 UTC55m
2026-06-18 DMMDG - Jun 18, 17:40 UTCJun 18, 19:15 UTC1h 35m
2026-06-18 DMMDG - Jun 18, 16:20 UTCJun 18, 16:45 UTC25m
2026-06-18 DMMDG - Jun 18, 11:05 UTCJun 18, 11:25 UTC20m
2026-06-18 DMMDG - Jun 18, 09:05 UTCJun 18, 09:20 UTC15m
2026-06-16 DMMDG - Jun 16, 11:05 UTCJun 16, 13:19 UTC2h 15m
2026-06-13 DMMDG - Jun 13, 08:55 UTCJun 13, 11:25 UTC2h 30m
2026-06-11 DMMDG - Jun 11, 18:55 UTCJun 11, 19:35 UTC40m
2026-06-11 DMMDG - Jun 11, 15:40 UTCJun 11, 16:30 UTC50m
2026-06-11 DMMDG - Jun 11, 12:05 UTCJun 11, 13:05 UTC1h 0m
2026-06-08 DMMDG - Jun 8, 13:15 UTCJun 8, 15:04 UTC1h 50m
2026-06-08 DMMDG - Jun 8, 07:25 UTCJun 8, 09:10 UTC1h 45m
2026-06-04 DMMDG - Jun 4, 14:30 UTCJun 4, 16:25 UTC1h 55m
2026-06-04 DMMDG - Jun 4, 10:35 UTCJun 4, 12:20 UTC1h 45m
2026-06-03 DMMDG - Jun 3, 14:55 UTCJun 3, 15:20 UTC25m
2026-06-02 DMMDG - Jun 2, 08:10 UTCJun 2, 08:20 UTC10m
2026-04-20 DMMDG - Apr 20, 15:20 UTCApr 20, 17:35 UTC2h 15m
2026-04-18 DMMDG - Apr 18, 17:05 UTCApr 18, 17:15 UTC10m
2026-04-18 DMMDG - Apr 18, 15:20 UTCApr 18, 15:50 UTC30m
2026-04-18 DMMDG - Apr 18, 10:55 UTCApr 18, 11:40 UTC45m
2026-04-16 DMMDG - Apr 16, 13:50 UTCApr 16, 14:10 UTC20m
2026-04-16 DMMDG - Apr 16, 11:20 UTCApr 16, 11:44 UTC25m

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

Mode-S 3FF644 frequently asked

What is Mode-S code 3FF644?
3FF644 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-MMDG.
Where is Mode-S 3FF644 registered?
Mode-S code 3FF644 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3FF644 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3FF644, octal 17773104, decimal 4,191,812.
What flights does 3FF644 operate?
Mode-S 3FF644 has broadcast 1 distinct callsign, including DMMDG.