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sensors Mode-S transponder

3C666E

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AISN · AIRBUS A-321

Hex
3C666E
Octal
17063156
Decimal
3,958,382
Country
DE
Tail
D-AISN
Type
A321
No current signal · last broadcast Jul 25, 18:50 UTC
Flights observed
458
Distinct callsigns
20
Country
DE
Last broadcast
Jul 25, 18:50 UTC

Last known position

Most recent position reported by Mode-S 3C666E.

Country allocation

The ICAO 24-bit address 3C666E 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
DLH1835 - 8 2026-07-16
DLH1834 - 8 2026-07-16
DLH8N Lufthansa 7 2026-07-24
DLH5LL - 7 2026-06-30
DLH4NF Lufthansa 7 2026-07-24
DLH41U Lufthansa 7 2026-07-23
DLH3E - 7 2026-06-30
DLH33K Lufthansa 6 2026-07-24
DLH9E - 5 2026-07-20
DLH3WH - 5 2026-07-20
DLH3AK - 5 2026-07-20
DLH1MK - 5 2026-07-20
DLH1687 - 5 2026-06-29
DLH1686 - 5 2026-06-29
DLH9YP - 4 2026-06-23
DLH9LY - 4 2026-07-22
DLH8XM Lufthansa 4 2026-07-22
DLH8UC Lufthansa 4 2026-07-25
DLH8PL Lufthansa 4 2026-07-23
DLH7YW - 4 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DLH8UC ARN → FRA Jul 25, 17:00 UTCJul 25, 18:45 UTC1h 45m
2026-07-25 DLH1EJ LHR → MUC Jul 25, 14:00 UTCJul 25, 15:35 UTC1h 35m
2026-07-25 DLH03A FRA → LIS Jul 25, 10:40 UTCJul 25, 12:40 UTC2h 0m
2026-07-25 DLH49M MUC → VLC Jul 25, 06:50 UTCJul 25, 09:05 UTC2h 15m
2026-07-25 DLH3EM LEJ → FRA Jul 25, 04:30 UTCJul 25, 05:30 UTC1h 0m
2026-07-24 DLH7KJ HAM → FRA Jul 24, 20:00 UTCJul 24, 20:55 UTC55m
2026-07-24 DLH3NF FRA → LEJ Jul 24, 16:30 UTCJul 24, 18:30 UTC2h 0m
2026-07-24 DLH1VT WRO → FRA Jul 24, 13:30 UTCJul 24, 15:05 UTC1h 35m
2026-07-24 DLH4NF FRA → ZAG Jul 24, 11:20 UTCJul 24, 12:05 UTC45m
2026-07-24 DLH8N MUC → BER Jul 24, 09:25 UTCJul 24, 10:15 UTC50m
2026-07-24 DLH33K FRA → MAD Jul 24, 05:45 UTCJul 24, 08:10 UTC2h 25m
2026-07-23 DLH41U FRA → LIS Jul 23, 19:45 UTCJul 23, 22:10 UTC2h 25m
2026-07-23 DLH9AC - Jul 23, 15:25 UTCJul 23, 16:45 UTC1h 20m
2026-07-23 DLH9WE - Jul 23, 13:05 UTCJul 23, 14:15 UTC1h 10m
2026-07-23 DLH1E HAM → MUC Jul 23, 06:55 UTCJul 23, 07:50 UTC55m
2026-07-23 DLH8PL BER → FRA Jul 23, 05:00 UTCJul 23, 06:00 UTC1h 0m
2026-07-22 DLH7HV FRA → LHR Jul 22, 18:55 UTCJul 22, 19:50 UTC55m
2026-07-22 DLH9LY - Jul 22, 17:15 UTCJul 22, 18:00 UTC45m
2026-07-22 DLH3FN ARN → MUC Jul 22, 13:45 UTCJul 22, 15:30 UTC1h 45m
2026-07-22 DLH8XM MUC → ARN Jul 22, 11:25 UTCJul 22, 12:40 UTC1h 15m
2026-07-21 DLH41U FRA → LIS Jul 21, 19:40 UTCJul 21, 22:10 UTC2h 30m
2026-07-21 DLH66Y MUC → BCN Jul 21, 16:20 UTCJul 21, 17:20 UTC1h 0m
2026-07-21 DLH86E - Jul 21, 14:10 UTCJul 21, 15:05 UTC55m
2026-07-21 DLH1PP OTP → FRA Jul 21, 12:00 UTCJul 21, 13:00 UTC1h 0m
2026-07-21 DLH6NJ FRA → SJJ Jul 21, 09:55 UTCJul 21, 10:55 UTC1h 0m
2026-07-21 DLH06E FRA → AGP Jul 21, 05:40 UTCJul 21, 08:00 UTC2h 20m
2026-07-20 DLH64P - Jul 20, 22:05 UTCJul 20, 22:30 UTC25m
2026-07-20 DLH64P - Jul 20, 18:30 UTCJul 20, 21:35 UTC3h 5m
2026-07-20 DLH3AK OLB → MUC Jul 20, 16:00 UTCJul 20, 17:20 UTC1h 20m
2026-07-20 DLH3WH - Jul 20, 13:25 UTCJul 20, 14:55 UTC1h 30m
2026-07-20 DLH9E HAM → MUC Jul 20, 09:15 UTCJul 20, 10:10 UTC55m
2026-07-20 DLH1MK MUC → HAM Jul 20, 07:05 UTCJul 20, 08:05 UTC1h 0m
2026-07-19 DLH6AN BUD → FRA Jul 19, 19:20 UTCJul 19, 20:10 UTC50m
2026-07-19 DLH4HX - Jul 19, 17:25 UTCJul 19, 18:10 UTC45m
2026-07-19 DLH48H FAO → MUC Jul 19, 13:45 UTCJul 19, 16:15 UTC2h 30m
2026-07-19 DLH98J MUC → FAO Jul 19, 09:40 UTCJul 19, 12:35 UTC2h 55m
2026-07-19 DLH4HF FRA → MXP Jul 19, 06:45 UTCJul 19, 07:40 UTC55m
2026-07-19 DLH8VV MUC → CGN Jul 19, 04:40 UTCJul 19, 05:25 UTC45m
2026-07-18 DLH1745 - Jul 18, 17:55 UTCJul 18, 19:30 UTC1h 35m
2026-07-18 DLH1744 - Jul 18, 14:05 UTCJul 18, 15:40 UTC1h 35m
2026-07-18 DLH03A - Jul 18, 10:00 UTCJul 18, 12:00 UTC2h 0m
2026-07-18 DLH49M MUC → VLC Jul 18, 06:45 UTCJul 18, 08:55 UTC2h 10m
2026-07-18 DLH3EM BRE → MUC Jul 18, 04:30 UTCJul 18, 05:25 UTC55m
2026-07-17 DLH7KJ HAM → FRA Jul 17, 20:00 UTCJul 17, 20:55 UTC55m
2026-07-17 DLH7XA - Jul 17, 17:15 UTCJul 17, 18:40 UTC1h 25m
2026-07-17 DLH4NC - Jul 17, 14:35 UTCJul 17, 15:55 UTC1h 20m
2026-07-17 DLH1PP - Jul 17, 11:50 UTCJul 17, 12:50 UTC1h 0m
2026-07-17 DLH6NJ FRA → SJJ Jul 17, 09:45 UTCJul 17, 10:44 UTC1h 0m
2026-07-17 DLH2PR - Jul 17, 07:25 UTCJul 17, 08:25 UTC1h 0m
2026-07-17 DLH4AN - Jul 17, 05:30 UTCJul 17, 06:20 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.

Prefer a tail-number view? See the D-AISN page for operator, model, and routing details .

Mode-S 3C666E frequently asked

What is Mode-S code 3C666E?
3C666E is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AISN.
Where is Mode-S 3C666E registered?
Mode-S code 3C666E is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C666E broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 18:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C666E, octal 17063156, decimal 3,958,382.
What flights does 3C666E operate?
Mode-S 3C666E has broadcast 20 distinct callsigns, including DLH1835, DLH1834, DLH8N, DLH5LL, DLH4NF.