Apparatus

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sensors Mode-S transponder

3C666B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AISK · AIRBUS A-321

Hex
3C666B
Octal
17063153
Decimal
3,958,379
Country
DE
Tail
D-AISK
Type
A321
No current signal · last broadcast 3h ago
Flights observed
463
Distinct callsigns
20
Country
DE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3C666B.

Country allocation

The ICAO 24-bit address 3C666B 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
DLH3NE - 11 2026-07-16
DLH1CN - 11 2026-07-16
DLH8PL - 8 2026-07-14
DLH1E - 8 2026-07-14
DLH6M - 7 2026-06-24
DLH1835 - 7 2026-06-30
DLH1834 - 7 2026-06-30
DLH7XA - 6 2026-07-12
DLH4NC - 6 2026-07-12
DLH9YP - 5 2026-06-30
DLH5E - 5 2026-07-03
DLH3X - 5 2026-07-04
DLH3EY - 5 2026-06-23
DLH2CL - 5 2026-07-02
DLH1XN - 5 2026-07-04
DLH9E - 4 2026-07-16
DLH8N - 4 2026-06-25
DLH88V Lufthansa 4 2026-06-14
DLH7XV - 4 2026-07-13
DLH64P - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH8NP - Jul 17, 18:40 UTCJul 17, 19:25 UTC45m
2026-07-17 DLH1EK BHX → FRA Jul 17, 15:05 UTCJul 17, 16:15 UTC1h 10m
2026-07-17 DLH1602 - Jul 17, 13:00 UTCJul 17, 14:04 UTC1h 5m
2026-07-17 DLH1713 - Jul 17, 10:30 UTCJul 17, 11:45 UTC1h 15m
2026-07-17 DLH1712 - Jul 17, 07:35 UTCJul 17, 08:35 UTC1h 0m
2026-07-17 DLH2FL VCE → FRA Jul 17, 03:05 UTCJul 17, 05:25 UTC2h 20m
2026-07-16 DLH5AE - Jul 16, 17:54 UTCJul 16, 19:50 UTC1h 55m
2026-07-16 DLH1CN - Jul 16, 15:30 UTCJul 16, 16:19 UTC50m
2026-07-16 DLH3NE - Jul 16, 13:15 UTCJul 16, 14:00 UTC45m
2026-07-16 DLH9E - Jul 16, 09:15 UTCJul 16, 10:15 UTC1h 0m
2026-07-16 DLH1MK - Jul 16, 07:15 UTCJul 16, 08:05 UTC50m
2026-07-15 DLH03W - Jul 15, 18:00 UTCJul 15, 19:35 UTC1h 35m
2026-07-15 DLH82A - Jul 15, 14:35 UTCJul 15, 16:30 UTC1h 55m
2026-07-15 DLH1775 SKG → MUC Jul 15, 10:20 UTCJul 15, 12:05 UTC1h 45m
2026-07-15 DLH1774 - Jul 15, 07:30 UTCJul 15, 09:00 UTC1h 30m
2026-07-14 DLH7HV DUS → MUC Jul 14, 19:00 UTCJul 14, 19:40 UTC40m
2026-07-14 DLH9LY MUC → DUS Jul 14, 16:55 UTCJul 14, 17:45 UTC50m
2026-07-14 DLH3FN ARN → MUC Jul 14, 13:40 UTCJul 14, 15:25 UTC1h 45m
2026-07-14 DLH8XM - Jul 14, 10:45 UTCJul 14, 12:35 UTC1h 50m
2026-07-14 DLH1E HAM → MUC Jul 14, 07:05 UTCJul 14, 08:05 UTC1h 0m
2026-07-14 DLH8PL MUC → HAM Jul 14, 04:55 UTCJul 14, 05:55 UTC1h 0m
2026-07-13 DLH05U BCN → MUC Jul 13, 19:45 UTCJul 13, 21:15 UTC1h 30m
2026-07-13 DLH77M MUC → BCN Jul 13, 17:05 UTCJul 13, 18:45 UTC1h 40m
2026-07-13 DLH1KX - Jul 13, 10:10 UTCJul 13, 11:50 UTC1h 40m
2026-07-13 DLH6YW - Jul 13, 07:35 UTCJul 13, 09:00 UTC1h 25m
2026-07-13 DLH7XV ARN → MUC Jul 13, 04:20 UTCJul 13, 06:15 UTC1h 55m
2026-07-12 DLH5EE MUC → ARN Jul 12, 19:35 UTCJul 12, 21:20 UTC1h 45m
2026-07-12 DLH7XA - Jul 12, 16:45 UTCJul 12, 18:15 UTC1h 30m
2026-07-12 DLH4NC - Jul 12, 14:15 UTCJul 12, 15:35 UTC1h 20m
2026-07-12 DLH4YV BUD → MUC Jul 12, 11:55 UTCJul 12, 12:55 UTC1h 0m
2026-07-12 DLH7YW MUC → BUD Jul 12, 10:01 UTCJul 12, 10:50 UTC50m
2026-07-12 DLH06E LIS → MUC Jul 12, 05:25 UTCJul 12, 07:55 UTC2h 30m
2026-07-11 DLH64P MUC → LIS Jul 11, 19:15 UTCJul 11, 22:10 UTC2h 55m
2026-07-11 DLH08X - Jul 11, 16:20 UTCJul 11, 17:20 UTC1h 0m
2026-07-11 DLH16A MUC → CDG Jul 11, 14:05 UTCJul 11, 15:15 UTC1h 10m
2026-07-11 DLH5TN - Jul 11, 11:10 UTCJul 11, 12:50 UTC1h 40m
2026-07-11 DLH9HE - Jul 11, 07:55 UTCJul 11, 09:40 UTC1h 45m
2026-07-11 DLH1715 - Jul 11, 04:20 UTCJul 11, 05:45 UTC1h 25m
2026-07-10 DLH1714 - Jul 10, 20:00 UTCJul 10, 21:05 UTC1h 5m
2026-07-10 DLH1687 - Jul 10, 16:15 UTCJul 10, 17:35 UTC1h 20m
2026-07-10 DLH1686 - Jul 10, 14:05 UTCJul 10, 15:05 UTC1h 0m
2026-07-10 DLH7M HAM → MUC Jul 10, 11:45 UTCJul 10, 12:45 UTC1h 0m
2026-07-10 DLH4JW - Jul 10, 09:25 UTCJul 10, 10:25 UTC1h 0m
2026-07-10 DLH06E LIS → MUC Jul 10, 05:30 UTCJul 10, 08:05 UTC2h 35m
2026-07-09 DLH64P - Jul 9, 18:35 UTCJul 9, 21:25 UTC2h 50m
2026-07-09 DLH53C - Jul 9, 14:55 UTCJul 9, 16:40 UTC1h 45m
2026-07-09 DLH82U - Jul 9, 11:35 UTCJul 9, 13:15 UTC1h 40m
2026-07-09 DLH1E - Jul 9, 06:55 UTCJul 9, 07:50 UTC55m
2026-07-09 DLH8PL - Jul 9, 04:50 UTCJul 9, 05:50 UTC1h 0m
2026-07-07 DLH1771 - Jul 7, 14:20 UTCJul 7, 17:30 UTC3h 10m

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

Mode-S 3C666B frequently asked

What is Mode-S code 3C666B?
3C666B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AISK.
Where is Mode-S 3C666B registered?
Mode-S code 3C666B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C666B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C666B, octal 17063153, decimal 3,958,379.
What flights does 3C666B operate?
Mode-S 3C666B has broadcast 20 distinct callsigns, including DLH3NE, DLH1CN, DLH8PL, DLH1E, DLH6M.