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sensors Mode-S transponder

3C6666

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AISF · AIRBUS A-321

Hex
3C6666
Octal
17063146
Decimal
3,958,374
Country
DE
Tail
D-AISF
Type
A321
No current signal · last broadcast Jul 26, 19:20 UTC
Flights observed
464
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 19:20 UTC

Last known position

Most recent position reported by Mode-S 3C6666.

Country allocation

The ICAO 24-bit address 3C6666 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
DLH4LM - 6 2026-07-02
DLH3MA - 6 2026-07-02
DLH85K - 5 2026-07-16
DLH7EK - 5 2026-07-20
DLH77P - 5 2026-07-06
DLH74U - 5 2026-07-16
DLH53F - 5 2026-07-16
DLH1PF Lufthansa 5 2026-06-06
DLH9WT Lufthansa 4 2026-07-26
DLH9LL - 4 2026-07-14
DLH9EJ - 4 2026-07-11
DLH83T Lufthansa 4 2026-07-24
DLH78H - 4 2026-07-17
DLH6VX Lufthansa 4 2026-07-26
DLH6EM - 4 2026-07-20
DLH68X - 4 2026-07-12
DLH5MV - 4 2026-07-11
DLH4HU - 4 2026-07-20
DLH44K Lufthansa 4 2026-06-12
DLH3PF - 4 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH9WT FRA → DUS Jul 26, 17:25 UTCJul 26, 19:15 UTC1h 50m
2026-07-26 DLH6VX BUD → FRA Jul 26, 14:35 UTCJul 26, 16:15 UTC1h 40m
2026-07-26 DLH8FL HEL → FRA Jul 26, 11:30 UTCJul 26, 13:05 UTC1h 35m
2026-07-26 DLH7WJ MUC → TOS Jul 26, 08:50 UTCJul 26, 10:30 UTC1h 40m
2026-07-26 DLH965 EDI → FRA Jul 26, 05:35 UTCJul 26, 06:55 UTC1h 21m
2026-07-25 DLH5EL BEG → FRA Jul 25, 20:35 UTCJul 25, 22:15 UTC1h 40m
2026-07-25 DLH73H BIA → FRA Jul 25, 17:20 UTCJul 25, 18:35 UTC1h 15m
2026-07-25 DLH01Y LYS → FRA Jul 25, 15:10 UTCJul 25, 16:15 UTC1h 5m
2026-07-25 DLH84H VLC → FRA Jul 25, 11:50 UTCJul 25, 13:50 UTC2h 0m
2026-07-25 DLH21A LIS → FRA Jul 25, 08:05 UTCJul 25, 10:20 UTC2h 15m
2026-07-25 DLH54J LYS → FRA Jul 25, 05:30 UTCJul 25, 06:25 UTC55m
2026-07-24 DLH19E FRA → LYS Jul 24, 20:45 UTCJul 24, 21:35 UTC50m
2026-07-24 DLH05E FRA → PMI Jul 24, 16:50 UTCJul 24, 18:55 UTC2h 5m
2026-07-24 DLH83T FRA → BIO Jul 24, 12:30 UTCJul 24, 14:55 UTC2h 25m
2026-07-24 DLH3EJ FRA → LEJ Jul 24, 08:05 UTCJul 24, 09:50 UTC1h 45m
2026-07-24 DLH6LC NAP → FRA Jul 24, 05:15 UTCJul 24, 07:00 UTC1h 45m
2026-07-23 DLH99M GRZ → FRA Jul 23, 15:50 UTCJul 23, 18:10 UTC2h 20m
2026-07-23 DLH93V FRA → ALC Jul 23, 12:10 UTCJul 23, 14:25 UTC2h 15m
2026-07-23 DLH7VV FCO → MUC Jul 23, 08:55 UTCJul 23, 10:05 UTC1h 10m
2026-07-23 DLH8MW FRA → VCE Jul 23, 07:10 UTCJul 23, 08:00 UTC50m
2026-07-23 DLH3FL CGN → MUC Jul 23, 03:20 UTCJul 23, 05:30 UTC2h 10m
2026-07-22 DLH7WK FRA → OTP Jul 22, 18:35 UTCJul 22, 20:25 UTC1h 50m
2026-07-22 DLH57Y PMI → FRA Jul 22, 11:45 UTCJul 22, 14:10 UTC2h 25m
2026-07-22 DLH893 RIX → FRA Jul 22, 04:30 UTCJul 22, 05:25 UTC55m
2026-07-21 DLH892 - Jul 21, 18:35 UTCJul 21, 20:25 UTC1h 50m
2026-07-21 DLH8LX FRA → FMO Jul 21, 15:00 UTCJul 21, 17:10 UTC2h 10m
2026-07-21 DLH8RC BER → FRA Jul 21, 12:10 UTCJul 21, 13:55 UTC1h 45m
2026-07-21 DLH92J BCN → MUC Jul 21, 05:05 UTCJul 21, 07:15 UTC2h 10m
2026-07-20 DLH44C FRA → OPO Jul 20, 19:30 UTCJul 20, 21:55 UTC2h 25m
2026-07-20 DLH3EK OSL → FRA Jul 20, 15:10 UTCJul 20, 16:50 UTC1h 40m
2026-07-20 DLH3NX FRA → OSL Jul 20, 12:20 UTCJul 20, 14:10 UTC1h 50m
2026-07-20 DLH4HU KRK → FRA Jul 20, 09:05 UTCJul 20, 10:25 UTC1h 20m
2026-07-20 DLH6EM FRA → KRK Jul 20, 06:55 UTCJul 20, 08:00 UTC1h 5m
2026-07-20 DLH7EK - Jul 20, 04:35 UTCJul 20, 05:20 UTC45m
2026-07-19 DLH1WP FRA → HAM Jul 19, 17:10 UTCJul 19, 17:55 UTC45m
2026-07-19 DLH57Y PMI → FRA Jul 19, 11:55 UTCJul 19, 14:15 UTC2h 20m
2026-07-19 DLH17F - Jul 19, 07:50 UTCJul 19, 10:35 UTC2h 45m
2026-07-19 DLH049 HAJ → FRA Jul 19, 04:15 UTCJul 19, 04:50 UTC35m
2026-07-18 DLH048 FRA → HAJ Jul 18, 20:30 UTCJul 18, 21:05 UTC35m
2026-07-18 DLH5TY - Jul 18, 17:20 UTCJul 18, 18:45 UTC1h 25m
2026-07-18 DLH1LC - Jul 18, 14:00 UTCJul 18, 15:25 UTC1h 25m
2026-07-18 DLH2NL - Jul 18, 06:55 UTCJul 18, 07:40 UTC45m
2026-07-18 DLH172 FRA → BER Jul 18, 05:00 UTCJul 18, 05:50 UTC50m
2026-07-17 DLH2LC - Jul 17, 19:00 UTCJul 17, 20:35 UTC1h 35m
2026-07-17 DLH336 - Jul 17, 16:10 UTCJul 17, 17:35 UTC1h 25m
2026-07-17 DLH11Y BCN → FRA Jul 17, 11:39 UTCJul 17, 13:10 UTC1h 30m
2026-07-17 DLH26C FRA → BCN Jul 17, 08:20 UTCJul 17, 10:10 UTC1h 50m
2026-07-17 DLH78H - Jul 17, 04:25 UTCJul 17, 06:20 UTC1h 55m
2026-07-16 DLH74U FRA → MAD Jul 16, 16:15 UTCJul 16, 18:34 UTC2h 20m
2026-07-16 DLH85K - Jul 16, 13:05 UTCJul 16, 14:40 UTC1h 35m

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

Mode-S 3C6666 frequently asked

What is Mode-S code 3C6666?
3C6666 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AISF.
Where is Mode-S 3C6666 registered?
Mode-S code 3C6666 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C6666 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C6666, octal 17063146, decimal 3,958,374.
What flights does 3C6666 operate?
Mode-S 3C6666 has broadcast 20 distinct callsigns, including DLH4LM, DLH3MA, DLH85K, DLH7EK, DLH77P.