Apparatus

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sensors Mode-S transponder

3C666C

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AISL · AIRBUS A-321

Hex
3C666C
Octal
17063154
Decimal
3,958,380
Country
DE
Tail
D-AISL
Type
A321
No current signal · last broadcast 4h ago
Flights observed
428
Distinct callsigns
20
Country
DE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 3C666C.

Country allocation

The ICAO 24-bit address 3C666C 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
DLH83T - 4 2026-06-29
DLH6YX - 4 2026-06-22
DLH3MU - 4 2026-06-22
DLH2XC - 4 2026-06-26
DLH1PF Lufthansa 4 2026-06-13
DLH192 Lufthansa 4 2026-06-26
DLH1457 - 4 2026-07-08
DLH1456 - 4 2026-07-07
DLH11F - 4 2026-07-11
DLH05E - 4 2026-06-29
DLH9PL - 3 2026-06-18
DLH9KK Lufthansa 3 2026-05-25
DLH982 - 3 2026-06-17
DLH979 - 3 2026-07-09
DLH978 - 3 2026-07-09
DLH8MW - 3 2026-06-14
DLH8AH - 3 2026-06-26
DLH85K - 3 2026-07-12
DLH7VV Lufthansa 3 2026-06-14
DLH77P - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH892 FRA → RIX Jul 17, 18:29 UTCJul 17, 20:15 UTC1h 45m
2026-07-17 DLH3EK OSL → FRA Jul 17, 15:10 UTCJul 17, 17:05 UTC1h 55m
2026-07-17 DLH3NX - Jul 17, 12:10 UTCJul 17, 13:45 UTC1h 35m
2026-07-17 DLH7F - Jul 17, 09:35 UTCJul 17, 10:30 UTC55m
2026-07-17 DLH33M FRA → CDG Jul 17, 07:40 UTCJul 17, 08:30 UTC50m
2026-07-17 DLH1561 EVN → FRA Jul 17, 01:09 UTCJul 17, 04:59 UTC3h 50m
2026-07-16 DLH1560 - Jul 16, 19:40 UTCJul 16, 22:59 UTC3h 20m
2026-07-16 DLH4UP MLA → FRA Jul 16, 15:05 UTCJul 16, 17:35 UTC2h 30m
2026-07-16 DLH8PP FRA → MLA Jul 16, 12:00 UTCJul 16, 14:05 UTC2h 5m
2026-07-16 DLH6P PRG → FRA Jul 16, 07:20 UTCJul 16, 08:15 UTC55m
2026-07-16 DLH8RX FRA → PRG Jul 16, 05:20 UTCJul 16, 06:00 UTC40m
2026-07-15 DLH3FT MUC → FRA Jul 15, 17:35 UTCJul 15, 18:20 UTC45m
2026-07-15 DLH8NK FRA → MUC Jul 15, 15:45 UTCJul 15, 16:20 UTC35m
2026-07-15 DLH6KA - Jul 15, 13:10 UTCJul 15, 14:30 UTC1h 20m
2026-07-15 DLH3UX - Jul 15, 10:35 UTCJul 15, 11:40 UTC1h 5m
2026-07-15 DLH7FL MUC → FRA Jul 15, 07:45 UTCJul 15, 08:25 UTC40m
2026-07-15 DLH3HH - Jul 15, 05:30 UTCJul 15, 06:05 UTC35m
2026-07-14 DLH43U OPO → FRA Jul 14, 11:40 UTCJul 14, 13:40 UTC2h 0m
2026-07-14 DLH82V FRA → OPO Jul 14, 07:40 UTCJul 14, 10:10 UTC2h 30m
2026-07-14 DLH049 - Jul 14, 04:05 UTCJul 14, 04:45 UTC40m
2026-07-13 DLH048 FRA → HAJ Jul 13, 20:30 UTCJul 13, 21:15 UTC45m
2026-07-13 DLH2LC - Jul 13, 17:25 UTCJul 13, 19:05 UTC1h 40m
2026-07-13 DLH336 - Jul 13, 14:40 UTCJul 13, 15:55 UTC1h 15m
2026-07-13 DLH9EJ - Jul 13, 11:10 UTCJul 13, 13:15 UTC2h 5m
2026-07-13 DLH5MV - Jul 13, 08:10 UTCJul 13, 10:00 UTC1h 50m
2026-07-13 DLH78H - Jul 13, 04:10 UTCJul 13, 06:10 UTC2h 0m
2026-07-12 DLH74U FRA → MAD Jul 12, 15:35 UTCJul 12, 17:45 UTC2h 10m
2026-07-12 DLH85K - Jul 12, 12:50 UTCJul 12, 14:15 UTC1h 25m
2026-07-12 DLH53F - Jul 12, 09:30 UTCJul 12, 11:10 UTC1h 40m
2026-07-12 DLH77P - Jul 12, 06:10 UTCJul 12, 07:50 UTC1h 40m
2026-07-11 DLH11F FRA → BCN Jul 11, 16:05 UTCJul 11, 17:40 UTC1h 35m
2026-07-11 DLH52J - Jul 11, 13:25 UTCJul 11, 14:40 UTC1h 15m
2026-07-11 DLH44T FRA → NCE Jul 11, 11:00 UTCJul 11, 12:10 UTC1h 10m
2026-07-11 DLH81H MAD → FRA Jul 11, 07:00 UTCJul 11, 09:00 UTC2h 0m
2026-07-10 DLH67K - Jul 10, 19:35 UTCJul 10, 21:40 UTC2h 5m
2026-07-10 DLH44K MAD → FRA Jul 10, 16:20 UTCJul 10, 18:15 UTC1h 55m
2026-07-10 DLH14C - Jul 10, 12:30 UTCJul 10, 14:45 UTC2h 15m
2026-07-10 DLH92J OPO → FRA Jul 10, 05:20 UTCJul 10, 07:35 UTC2h 15m
2026-07-09 DLH44C FRA → OPO Jul 9, 19:20 UTCJul 9, 21:35 UTC2h 15m
2026-07-09 DLH2F - Jul 9, 17:05 UTCJul 9, 17:50 UTC45m
2026-07-09 DLH88H FRA → CDG Jul 9, 15:00 UTCJul 9, 15:55 UTC55m
2026-07-09 DLH979 - Jul 9, 11:45 UTCJul 9, 13:15 UTC1h 30m
2026-07-09 DLH978 FRA → DUB Jul 9, 08:50 UTCJul 9, 10:40 UTC1h 50m
2026-07-09 DLH8RM HAJ → FRA Jul 9, 06:40 UTCJul 9, 07:15 UTC35m
2026-07-09 DLH6VV FRA → HAJ Jul 9, 05:00 UTCJul 9, 05:40 UTC40m
2026-07-08 DLH613 - Jul 8, 22:40 UTCJul 9, 03:10 UTC4h 30m
2026-07-08 DLH612 - Jul 8, 15:55 UTCJul 8, 19:40 UTC3h 45m
2026-07-08 DLH37W MAD → FRA Jul 8, 11:55 UTCJul 8, 14:00 UTC2h 5m
2026-07-08 DLH02F FRA → MAD Jul 8, 08:00 UTCJul 8, 10:00 UTC2h 0m
2026-07-08 DLH1457 - Jul 8, 04:35 UTCJul 8, 06:20 UTC1h 45m

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

Mode-S 3C666C frequently asked

What is Mode-S code 3C666C?
3C666C is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AISL.
Where is Mode-S 3C666C registered?
Mode-S code 3C666C is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C666C broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C666C, octal 17063154, decimal 3,958,380.
What flights does 3C666C operate?
Mode-S 3C666C has broadcast 20 distinct callsigns, including DLH83T, DLH6YX, DLH3MU, DLH2XC, DLH1PF.