Apparatus

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sensors Mode-S transponder

3C6655

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRU · AIRBUS A-321

Hex
3C6655
Octal
17063125
Decimal
3,958,357
Country
DE
Tail
D-AIRU
Type
A321
No current signal · last broadcast 1d ago
Flights observed
203
Distinct callsigns
20
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3C6655.

Country allocation

The ICAO 24-bit address 3C6655 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 20 distinct

Callsign Airline Flights Last seen
DLH3PF Lufthansa 5 2026-05-29
DLH9LL Lufthansa 4 2026-05-29
DLH9KK Lufthansa 3 2026-05-17
DLH6KA Lufthansa 3 2026-05-23
DLH3WU Lufthansa 3 2026-05-17
DLH3UX Lufthansa 3 2026-05-23
DLH9YW Lufthansa 2 2026-05-08
DLH99M Lufthansa 2 2026-05-19
DLH98C Lufthansa 2 2026-04-18
DLH947 Lufthansa 2 2026-05-08
DLH93V Lufthansa 2 2026-05-19
DLH883 Lufthansa 2 2026-05-13
DLH882 Lufthansa 2 2026-05-13
DLH880 Lufthansa 2 2026-05-24
DLH81H Lufthansa 2 2026-05-23
DLH804 Lufthansa 2 2026-05-17
DLH7P Lufthansa 2 2026-05-28
DLH7LY Lufthansa 2 2026-05-17
DLH7FL Lufthansa 2 2026-05-09
DLH78H Lufthansa 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 DLH204 FRA → DRS May 29, 19:00 UTCMay 29, 20:00 UTC1h 0m
2026-05-29 DLH44K PMI → FRA May 29, 15:40 UTCMay 29, 17:50 UTC2h 10m
2026-05-29 DLH14C FRA → MAD May 29, 11:45 UTCMay 29, 13:40 UTC1h 55m
2026-05-29 DLH3PF MUC → FRA May 29, 08:35 UTCMay 29, 10:05 UTC1h 30m
2026-05-29 DLH9LL MUC → CGN May 29, 05:35 UTCMay 29, 07:00 UTC1h 25m
2026-05-28 OCN3ME HER → FRA May 28, 16:25 UTCMay 28, 19:15 UTC2h 50m
2026-05-28 OCN7YZ - May 28, 12:25 UTCMay 28, 14:50 UTC2h 25m
2026-05-28 DLH4HU MXP → MUC May 28, 09:20 UTCMay 28, 10:35 UTC1h 15m
2026-05-28 DLH6EM BEG → FRA May 28, 07:05 UTCMay 28, 08:10 UTC1h 5m
2026-05-28 DLH7P PRG → FRA May 28, 04:05 UTCMay 28, 05:05 UTC1h 0m
2026-05-27 DLH5XY ARN → FRA May 27, 20:40 UTCMay 27, 21:20 UTC40m
2026-05-27 DLH897 VNO → FRA May 27, 16:45 UTCMay 27, 18:45 UTC2h 0m
2026-05-27 DLH896 FRA → VNO May 27, 14:05 UTCMay 27, 15:40 UTC1h 35m
2026-05-27 DLH32K BCN → FRA May 27, 08:30 UTCMay 27, 10:20 UTC1h 50m
2026-05-27 DLH52F ALC → FRA May 27, 05:40 UTCMay 27, 07:20 UTC1h 41m
2026-05-26 DLH6UL HAM → FRA May 26, 17:20 UTCMay 26, 18:45 UTC1h 25m
2026-05-26 DLH6HE FRA → BUD May 26, 14:55 UTCMay 26, 16:10 UTC1h 15m
2026-05-26 DLH5P PRG → FRA May 26, 12:40 UTCMay 26, 13:24 UTC45m
2026-05-26 DLH2RW HAM → FRA May 26, 10:54 UTCMay 26, 11:34 UTC40m
2026-05-26 DLH6CF ARN → FRA May 26, 07:55 UTCMay 26, 09:19 UTC1h 25m
2026-05-26 DLH2EW LIN → FRA May 26, 05:20 UTCMay 26, 06:39 UTC1h 20m
2026-05-25 DLH9XY MUC → LHR May 25, 17:55 UTCMay 25, 18:45 UTC50m
2026-05-25 DLH1KY BUD → FRA May 25, 16:05 UTCMay 25, 16:55 UTC50m
2026-05-25 DLH1455 TIA → FRA May 25, 12:50 UTCMay 25, 14:35 UTC1h 45m
2026-05-25 DLH1454 FRA → TIA May 25, 09:35 UTCMay 25, 11:20 UTC1h 45m
2026-05-25 DLH1454 FRA → TIA May 25, 09:20 UTCMay 25, 09:25 UTC5m
2026-05-25 DLH4MK HAM → FRA May 25, 07:20 UTCMay 25, 07:45 UTC25m
2026-05-25 DLH5UY FRA → SOF May 25, 06:00 UTCMay 25, 06:25 UTC25m
2026-05-24 DLH341 CAG → FRA May 24, 17:30 UTCMay 24, 19:05 UTC1h 35m
2026-05-24 DLH340 FRA → GOA May 24, 14:30 UTCMay 24, 16:00 UTC1h 30m
2026-05-24 DLH1RE MUC → HEL May 24, 11:05 UTCMay 24, 13:00 UTC1h 55m
2026-05-24 DLH880 FRA → TLL May 24, 07:50 UTCMay 24, 09:55 UTC2h 5m
2026-05-24 DLH78H IBZ → MUC May 24, 04:10 UTCMay 24, 06:15 UTC2h 5m
2026-05-23 DLH74U BCN → FRA May 23, 16:10 UTCMay 23, 18:10 UTC2h 0m
2026-05-23 DLH6KA MUC → BUD May 23, 13:15 UTCMay 23, 14:35 UTC1h 20m
2026-05-23 DLH3UX FCO → FRA May 23, 10:55 UTCMay 23, 12:05 UTC1h 10m
2026-05-23 DLH81H FRA → OPO May 23, 06:40 UTCMay 23, 08:40 UTC2h 0m
2026-05-22 DLH67K FRA → MAD May 22, 19:45 UTCMay 22, 21:55 UTC2h 10m
2026-05-22 DLH2F CDG → FRA May 22, 17:20 UTCMay 22, 18:00 UTC40m
2026-05-22 DLH88H FRA → FAO May 22, 15:05 UTCMay 22, 15:55 UTC50m
2026-05-22 DLH3RK FRA → CPH May 22, 11:15 UTCMay 22, 13:45 UTC2h 30m
2026-05-22 DLH4WE HAM → FRA May 22, 07:55 UTCMay 22, 10:05 UTC2h 10m
2026-05-21 DLH39E STR → SKG May 21, 16:20 UTCMay 21, 18:35 UTC2h 15m
2026-05-21 DLH02M FRA → SKG May 21, 13:10 UTCMay 21, 15:15 UTC2h 5m
2026-05-21 DLH323 NAP → FRA May 21, 09:50 UTCMay 21, 11:50 UTC2h 0m
2026-05-21 DLH322 FRA → NAP May 21, 06:40 UTCMay 21, 08:10 UTC1h 30m
2026-05-21 DLH7EK FRA → BRU May 21, 04:05 UTCMay 21, 04:45 UTC40m
2026-05-20 DLH032 FRA → HAM May 20, 18:40 UTCMay 20, 19:25 UTC45m
2026-05-20 DLH4EW BER → FRA May 20, 16:40 UTCMay 20, 17:25 UTC45m
2026-05-20 DLH024 FRA → HAM May 20, 14:25 UTCMay 20, 15:10 UTC45m

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

Mode-S 3C6655 frequently asked

What is Mode-S code 3C6655?
3C6655 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRU.
Where is Mode-S 3C6655 registered?
Mode-S code 3C6655 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6655 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 3C6655, octal 17063125, decimal 3,958,357.
What flights does 3C6655 operate?
Mode-S 3C6655 has broadcast 20 distinct callsigns, including DLH3PF, DLH9LL, DLH9KK, DLH6KA, DLH3WU.