Apparatus

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sensors Mode-S transponder

3D181D

ICAO 24-bit transponder address · allocated to Germany

Hex
3D181D
Octal
17214035
Decimal
4,003,869
Country
DE
No current signal · last broadcast 16h ago
Flights observed
103
Distinct callsigns
1
Country
DE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 3D181D.

Country allocation

The ICAO 24-bit address 3D181D 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
DEHJP - 103 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DEHJP - Jul 13, 09:25 UTCJul 13, 09:50 UTC25m
2026-07-12 DEHJP - Jul 12, 12:20 UTCJul 12, 12:45 UTC25m
2026-07-12 DEHJP - Jul 12, 10:05 UTCJul 12, 10:30 UTC25m
2026-07-10 DEHJP - Jul 10, 14:55 UTCJul 10, 15:50 UTC55m
2026-07-10 DEHJP - Jul 10, 10:05 UTCJul 10, 11:40 UTC1h 35m
2026-07-10 DEHJP - Jul 10, 07:05 UTCJul 10, 08:45 UTC1h 40m
2026-07-09 DEHJP - Jul 9, 15:15 UTCJul 9, 15:30 UTC15m
2026-07-09 DEHJP - Jul 9, 10:15 UTCJul 9, 10:30 UTC15m
2026-07-09 DEHJP - Jul 9, 07:15 UTCJul 9, 08:10 UTC55m
2026-07-06 DEHJP - Jul 6, 07:35 UTCJul 6, 09:15 UTC1h 40m
2026-07-05 DEHJP - Jul 5, 07:10 UTCJul 5, 09:00 UTC1h 50m
2026-07-04 DEHJP - Jul 4, 12:10 UTCJul 4, 13:15 UTC1h 5m
2026-07-02 DEHJP - Jul 2, 11:20 UTCJul 2, 11:30 UTC10m
2026-06-26 DEHJP - Jun 26, 08:05 UTCJun 26, 08:15 UTC10m
2026-06-25 DEHJP - Jun 25, 06:00 UTCJun 25, 07:30 UTC1h 30m
2026-06-24 DEHJP - Jun 24, 06:55 UTCJun 24, 07:34 UTC40m
2026-06-23 DEHJP - Jun 23, 12:40 UTCJun 23, 15:40 UTC3h 0m
2026-06-22 DEHJP - Jun 22, 06:00 UTCJun 22, 08:44 UTC2h 45m
2026-06-21 DEHJP - Jun 21, 11:34 UTCJun 21, 12:24 UTC50m
2026-06-20 DEHJP - Jun 20, 14:29 UTCJun 20, 15:24 UTC55m
2026-06-20 DEHJP - Jun 20, 12:50 UTCJun 20, 13:49 UTC1h 0m
2026-06-20 DEHJP - Jun 20, 10:39 UTCJun 20, 11:05 UTC25m
2026-06-20 DEHJP - Jun 20, 08:34 UTCJun 20, 09:29 UTC55m
2026-06-20 DEHJP - Jun 20, 07:09 UTCJun 20, 07:44 UTC35m
2026-06-19 DEHJP - Jun 19, 16:59 UTCJun 19, 17:29 UTC30m
2026-06-19 DEHJP - Jun 19, 06:54 UTCJun 19, 07:54 UTC1h 0m
2026-06-18 DEHJP - Jun 18, 12:00 UTCJun 18, 13:00 UTC1h 0m
2026-06-18 DEHJP - Jun 18, 07:15 UTCJun 18, 08:15 UTC1h 0m
2026-06-17 DEHJP - Jun 17, 14:45 UTCJun 17, 15:35 UTC50m
2026-06-17 DEHJP - Jun 17, 09:30 UTCJun 17, 10:20 UTC50m
2026-06-15 DEHJP - Jun 15, 13:10 UTCJun 15, 13:20 UTC10m
2026-06-14 DEHJP - Jun 14, 15:15 UTCJun 14, 15:30 UTC15m
2026-06-14 DEHJP - Jun 14, 14:40 UTCJun 14, 15:10 UTC30m
2026-06-07 DEHJP - Jun 7, 08:30 UTCJun 7, 10:55 UTC2h 25m
2026-06-05 DEHJP - Jun 5, 13:25 UTCJun 5, 13:40 UTC15m
2026-06-05 DEHJP - Jun 5, 07:10 UTCJun 5, 07:40 UTC30m
2026-06-04 DEHJP - Jun 4, 07:05 UTCJun 4, 08:30 UTC1h 25m
2026-06-02 DEHJP - Jun 2, 09:15 UTCJun 2, 09:50 UTC35m
2026-06-02 DEHJP - Jun 2, 07:30 UTCJun 2, 08:00 UTC30m
2026-05-31 DEHJP - May 31, 11:35 UTCMay 31, 12:30 UTC55m
2026-05-31 DEHJP - May 31, 09:00 UTCMay 31, 10:35 UTC1h 35m
2026-05-30 DEHJP - May 30, 09:50 UTCMay 30, 10:20 UTC30m
2026-05-30 DEHJP - May 30, 08:05 UTCMay 30, 09:00 UTC55m
2026-05-30 DEHJP - May 30, 07:00 UTCMay 30, 07:50 UTC50m
2026-05-29 DEHJP - May 29, 16:25 UTCMay 29, 18:05 UTC1h 40m
2026-05-29 DEHJP - May 29, 13:25 UTCMay 29, 13:45 UTC20m
2026-05-29 DEHJP - May 29, 07:05 UTCMay 29, 07:25 UTC20m
2026-05-26 DEHJP - May 26, 12:10 UTCMay 26, 13:00 UTC50m
2026-05-25 DEHJP - May 25, 13:35 UTCMay 25, 14:25 UTC50m
2026-05-25 DEHJP - May 25, 11:55 UTCMay 25, 12:45 UTC50m

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.

Mode-S 3D181D frequently asked

What is Mode-S code 3D181D?
3D181D is an ICAO 24-bit transponder address. Allocated to Germany.
Where is Mode-S 3D181D registered?
Mode-S code 3D181D is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D181D broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D181D, octal 17214035, decimal 4,003,869.
What flights does 3D181D operate?
Mode-S 3D181D has broadcast 1 distinct callsign, including DEHJP.