Apparatus

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sensors Mode-S transponder

44CDC9

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SNI · AIRBUS A-320

Hex
44CDC9
Octal
21146711
Decimal
4,509,129
Country
BE
Tail
OO-SNI
Type
A320
No current signal · last broadcast 5h ago
Flights observed
491
Distinct callsigns
20
Country
BE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 44CDC9.

Country allocation

The ICAO 24-bit address 44CDC9 falls within the block assigned to Belgium (BE) by ICAO Annex 10, Volume III. Every aircraft registered in Belgium 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
BEL9PW - 8 2026-07-01
BEL8NV - 8 2026-07-01
BEL2HV - 8 2026-07-11
BEL6TC - 7 2026-06-26
BEL6HF - 7 2026-06-29
BEL5UC - 7 2026-06-30
BEL5PR - 7 2026-07-02
BEL5CG - 7 2026-06-29
BEL3ZY - 7 2026-06-26
BEL2LG Brussels Airlines 7 2026-07-02
BEL9SE - 6 2026-07-08
BEL2CA - 6 2026-07-08
BEL9EL - 5 2026-07-09
BEL8PZ - 5 2026-07-03
BEL8NY - 5 2026-07-01
BEL8KV - 5 2026-07-03
BEL8HR Brussels Airlines 5 2026-07-07
BEL8CZ - 5 2026-07-08
BEL8CE Brussels Airlines 5 2026-06-04
BEL74C - 5 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BEL2FM - Jul 13, 19:40 UTCJul 13, 21:45 UTC2h 5m
2026-07-13 BEL2UE - Jul 13, 16:00 UTCJul 13, 17:55 UTC1h 55m
2026-07-13 BEL3KK BRU → MAD Jul 13, 12:40 UTCJul 13, 14:40 UTC2h 0m
2026-07-13 BEL5AU OSL → BRU Jul 13, 05:05 UTCJul 13, 06:45 UTC1h 40m
2026-07-12 BEL1EW BRU → OSL Jul 12, 19:25 UTCJul 12, 21:00 UTC1h 35m
2026-07-12 BEL8AJ - Jul 12, 16:30 UTCJul 12, 18:10 UTC1h 40m
2026-07-12 BEL9EU BRU → OSL Jul 12, 13:40 UTCJul 12, 15:15 UTC1h 35m
2026-07-11 BEL9910 - Jul 11, 16:05 UTCJul 11, 17:55 UTC1h 50m
2026-07-11 BEL2HV - Jul 11, 08:15 UTCJul 11, 10:10 UTC1h 55m
2026-07-11 BEL7HQ ARN → BRU Jul 11, 05:05 UTCJul 11, 06:55 UTC1h 50m
2026-07-10 BEL9FL BRU → ARN Jul 10, 20:05 UTCJul 10, 21:50 UTC1h 45m
2026-07-10 BEL2UE MAD → BRU Jul 10, 16:50 UTCJul 10, 18:40 UTC1h 50m
2026-07-10 BEL3KK BRU → MAD Jul 10, 13:00 UTCJul 10, 14:55 UTC1h 55m
2026-07-10 BEL47P - Jul 10, 10:30 UTCJul 10, 11:40 UTC1h 10m
2026-07-10 BEL2NM BRU → PRG Jul 10, 08:10 UTCJul 10, 09:25 UTC1h 15m
2026-07-10 BEL8CL HAM → BRU Jul 10, 05:15 UTCJul 10, 06:10 UTC55m
2026-07-09 BEL3TX BRU → HAM Jul 9, 19:50 UTCJul 9, 20:40 UTC50m
2026-07-09 BEL2UE - Jul 9, 16:40 UTCJul 9, 18:35 UTC1h 55m
2026-07-09 BEL3KK BRU → MAD Jul 9, 12:45 UTCJul 9, 14:35 UTC1h 50m
2026-07-09 BEL9EL - Jul 9, 08:50 UTCJul 9, 10:40 UTC1h 50m
2026-07-09 BEL1YC - Jul 9, 05:40 UTCJul 9, 07:10 UTC1h 30m
2026-07-08 BEL72R GVA → BRU Jul 8, 19:30 UTCJul 8, 20:25 UTC55m
2026-07-08 BEL4GV - Jul 8, 17:35 UTCJul 8, 18:30 UTC55m
2026-07-08 BEL2CA GVA → BRU Jul 8, 15:25 UTCJul 8, 16:15 UTC50m
2026-07-08 BEL9SE - Jul 8, 13:15 UTCJul 8, 14:05 UTC50m
2026-07-08 BEL8CZ - Jul 8, 09:15 UTCJul 8, 11:35 UTC2h 20m
2026-07-08 BEL6NY - Jul 8, 04:25 UTCJul 8, 06:40 UTC2h 15m
2026-07-07 BEL6VA - Jul 7, 22:00 UTCJul 8, 00:25 UTC2h 25m
2026-07-07 BEL9RZ - Jul 7, 17:35 UTCJul 7, 20:05 UTC2h 30m
2026-07-07 BEL8HR OPO → BRU Jul 7, 14:05 UTCJul 7, 16:10 UTC2h 5m
2026-07-07 BEL1MG - Jul 7, 11:05 UTCJul 7, 13:00 UTC1h 55m
2026-07-07 BEL4LZ FRA → BRU Jul 7, 09:10 UTCJul 7, 09:50 UTC40m
2026-07-07 BEL8ZB - Jul 7, 07:05 UTCJul 7, 07:45 UTC40m
2026-07-06 BEL8KG ZRH → BRU Jul 6, 18:30 UTCJul 6, 19:15 UTC45m
2026-07-06 BEL5LY BRU → ZRH Jul 6, 16:35 UTCJul 6, 17:30 UTC55m
2026-07-06 BEL74C BCN → BRU Jul 6, 13:35 UTCJul 6, 15:15 UTC1h 40m
2026-07-06 BEL9QH - Jul 6, 10:45 UTCJul 6, 12:20 UTC1h 35m
2026-07-06 BEL4LZ FRA → BRU Jul 6, 08:55 UTCJul 6, 09:35 UTC40m
2026-07-06 BEL8ZB - Jul 6, 06:55 UTCJul 6, 07:35 UTC40m
2026-07-05 BEL8LX - Jul 5, 20:10 UTCJul 5, 23:25 UTC3h 15m
2026-07-05 BEL4AN - Jul 5, 15:20 UTCJul 5, 18:15 UTC2h 55m
2026-07-05 BEL9VN - Jul 5, 10:50 UTCJul 5, 14:05 UTC3h 15m
2026-07-05 BEL1WH - Jul 5, 06:35 UTCJul 5, 09:20 UTC2h 45m
2026-07-04 BEL6HB TFS → BRU Jul 4, 17:40 UTCJul 4, 21:30 UTC3h 50m
2026-07-04 BEL7QJ - Jul 4, 12:35 UTCJul 4, 16:25 UTC3h 50m
2026-07-04 BEL4MR MIR → BRU Jul 4, 08:40 UTCJul 4, 11:10 UTC2h 30m
2026-07-04 BEL5TR - Jul 4, 04:45 UTCJul 4, 06:50 UTC2h 5m
2026-07-03 BEL2QA - Jul 3, 22:45 UTCJul 4, 01:15 UTC2h 30m
2026-07-03 BEL9MV - Jul 3, 19:15 UTCJul 3, 21:45 UTC2h 30m
2026-07-03 BEL75Y KGS → BRU Jul 3, 14:30 UTCJul 3, 17:45 UTC3h 15m

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 OO-SNI page for operator, model, and routing details .

Mode-S 44CDC9 frequently asked

What is Mode-S code 44CDC9?
44CDC9 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SNI.
Where is Mode-S 44CDC9 registered?
Mode-S code 44CDC9 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CDC9 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CDC9, octal 21146711, decimal 4,509,129.
What flights does 44CDC9 operate?
Mode-S 44CDC9 has broadcast 20 distinct callsigns, including BEL9PW, BEL8NV, BEL2HV, BEL6TC, BEL6HF.