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sensors Mode-S transponder

3CE3B3

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-CNNN · CESSNA 560XL Citation XLS

Hex
3CE3B3
Octal
17161663
Decimal
3,990,451
Country
DE
Tail
D-CNNN
Type
C56X
Broadcasting now · callsign SCR239 · 28,825 ft
Flights observed
39
Distinct callsigns
2
Country
DE
Last broadcast
Jul 26, 18:10 UTC

Current position

3CE3B3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3CE3B3 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 2 distinct

Callsign Airline Flights Last seen
SCR239 - 37 2026-07-26
DCS705 - 2 2026-04-16

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-07-26 SCR239 - Jul 26, 16:55 UTCJul 26, 18:10 UTC1h 15m
2026-07-26 SCR239 NCE → MUC Jul 26, 15:15 UTCJul 26, 16:20 UTC1h 5m
2026-07-26 SCR239 - Jul 26, 12:15 UTCJul 26, 13:45 UTC1h 30m
2026-07-25 SCR239 - Jul 25, 16:30 UTCJul 25, 18:15 UTC1h 45m
2026-07-25 SCR239 - Jul 25, 13:30 UTCJul 25, 14:35 UTC1h 5m
2026-07-25 SCR239 - Jul 25, 11:40 UTCJul 25, 12:35 UTC55m
2026-07-25 SCR239 - Jul 25, 07:25 UTCJul 25, 09:15 UTC1h 50m
2026-07-24 SCR239 AMS → CGN Jul 24, 14:40 UTCJul 24, 15:20 UTC40m
2026-07-24 SCR239 - Jul 24, 12:10 UTCJul 24, 13:50 UTC1h 40m
2026-07-23 SCR239 FLR → CEQ Jul 23, 12:35 UTCJul 23, 13:25 UTC50m
2026-07-23 SCR239 - Jul 23, 09:10 UTCJul 23, 11:10 UTC2h 0m
2026-07-23 SCR239 - Jul 23, 06:25 UTCJul 23, 07:55 UTC1h 30m
2026-07-22 SCR239 - Jul 22, 11:35 UTCJul 22, 13:55 UTC2h 20m
2026-07-21 SCR239 - Jul 21, 15:10 UTCJul 21, 15:55 UTC45m
2026-07-21 SCR239 - Jul 21, 12:00 UTCJul 21, 14:10 UTC2h 10m
2026-07-21 SCR239 - Jul 21, 09:00 UTCJul 21, 10:45 UTC1h 45m
2026-07-20 SCR239 - Jul 20, 09:10 UTCJul 20, 10:00 UTC50m
2026-07-19 SCR239 - Jul 19, 14:10 UTCJul 19, 15:25 UTC1h 15m
2026-07-19 SCR239 - Jul 19, 11:45 UTCJul 19, 12:45 UTC1h 0m
2026-07-19 SCR239 BEG → PEG Jul 19, 09:35 UTCJul 19, 10:50 UTC1h 15m
2026-07-18 SCR239 - Jul 18, 12:10 UTCJul 18, 13:30 UTC1h 20m
2026-07-18 SCR239 HAM → OLB Jul 18, 08:05 UTCJul 18, 10:40 UTC2h 35m
2026-07-17 SCR239 - Jul 17, 18:40 UTCJul 17, 20:20 UTC1h 40m
2026-07-17 SCR239 EDI → NCE Jul 17, 15:00 UTCJul 17, 17:30 UTC2h 30m
2026-07-16 SCR239 - Jul 16, 17:25 UTCJul 16, 19:55 UTC2h 30m
2026-07-16 SCR239 - Jul 16, 12:49 UTCJul 16, 15:49 UTC3h 0m
2026-07-16 SCR239 - Jul 16, 08:55 UTCJul 16, 10:55 UTC2h 0m
2026-07-15 SCR239 NRK → MUC Jul 15, 16:25 UTCJul 15, 18:15 UTC1h 50m
2026-07-15 SCR239 - Jul 15, 15:10 UTCJul 15, 15:30 UTC20m
2026-07-15 SCR239 - Jul 15, 11:10 UTCJul 15, 13:40 UTC2h 30m
2026-07-14 SCR239 - Jul 14, 14:05 UTCJul 14, 16:00 UTC1h 55m
2026-07-14 SCR239 - Jul 14, 10:35 UTCJul 14, 12:40 UTC2h 5m
2026-07-14 SCR239 NCE → GBA Jul 14, 07:45 UTCJul 14, 09:35 UTC1h 50m
2026-07-12 SCR239 - Jul 12, 08:30 UTCJul 12, 10:10 UTC1h 40m
2026-07-12 SCR239 - Jul 12, 06:40 UTCJul 12, 07:05 UTC25m
2026-07-11 SCR239 VIE → MST Jul 11, 12:10 UTCJul 11, 13:30 UTC1h 20m
2026-07-11 SCR239 - Jul 11, 10:10 UTCJul 11, 11:05 UTC55m
2026-04-16 DCS705 - Apr 16, 11:09 UTCApr 16, 12:00 UTC50m
2026-04-16 DCS705 - Apr 16, 10:54 UTCApr 16, 11:04 UTC10m

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

Mode-S 3CE3B3 frequently asked

What is Mode-S code 3CE3B3?
3CE3B3 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-CNNN.
Where is Mode-S 3CE3B3 registered?
Mode-S code 3CE3B3 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3CE3B3 broadcasting right now?
Yes. Mode-S 3CE3B3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3CE3B3, octal 17161663, decimal 3,990,451.
What flights does 3CE3B3 operate?
Mode-S 3CE3B3 has broadcast 2 distinct callsigns, including SCR239, DCS705.