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sensors Mode-S transponder

44CDCF

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SNO · AIRBUS A-320

Hex
44CDCF
Octal
21146717
Decimal
4,509,135
Country
BE
Tail
OO-SNO
Type
A320
Broadcasting now · callsign BEL4AA · 36,000 ft
Flights observed
534
Distinct callsigns
20
Country
BE
Last broadcast
Jul 26, 20:55 UTC

Current position

44CDCF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 44CDCF 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
BEL7AD Brussels Airlines 12 2026-07-25
BEL5EN Brussels Airlines 12 2026-07-25
BEL2FR - 10 2026-07-17
BEL2FM - 10 2026-07-16
BEL8CZ - 9 2026-07-09
BEL6NY - 9 2026-07-09
BEL5UC Brussels Airlines 8 2026-06-06
BEL3KK Brussels Airlines 8 2026-06-25
BEL2UE - 8 2026-06-25
BEL2HV Brussels Airlines 8 2026-06-06
BEL9FU Brussels Airlines 7 2026-07-19
BEL5GR Brussels Airlines 7 2026-07-19
BEL9HR - 6 2026-06-15
BEL7LW - 6 2026-07-19
BEL76T Brussels Airlines 6 2026-06-12
BEL3CP - 6 2026-07-19
BEL29D Brussels Airlines 6 2026-06-11
BEL1UF - 6 2026-06-15
BEL9PW - 5 2026-07-15
BEL9EU Brussels Airlines 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BEL72R GVA → BRU Jul 26, 19:55 UTCJul 26, 20:50 UTC55m
2026-07-26 BEL4GV BRU → GVA Jul 26, 17:55 UTCJul 26, 18:45 UTC50m
2026-07-26 BEL6VF NCE → BRU Jul 26, 15:20 UTCJul 26, 16:35 UTC1h 15m
2026-07-26 BEL8NY BRU → NCE Jul 26, 12:05 UTCJul 26, 13:25 UTC1h 20m
2026-07-26 BEL4MR MIR → BRU Jul 26, 08:15 UTCJul 26, 10:35 UTC2h 20m
2026-07-26 BEL5TR - Jul 26, 04:30 UTCJul 26, 06:45 UTC2h 16m
2026-07-25 BEL1RA BRU → FAO Jul 25, 18:55 UTCJul 25, 22:10 UTC3h 15m
2026-07-25 BEL5VD - Jul 25, 14:30 UTCJul 25, 17:20 UTC2h 50m
2026-07-25 BEL7AD MAD → BRU Jul 25, 11:05 UTCJul 25, 12:50 UTC1h 45m
2026-07-25 BEL5EN BRU → MAD Jul 25, 07:50 UTCJul 25, 09:40 UTC1h 50m
2026-07-25 BEL6NQ CPH → BRU Jul 25, 05:00 UTCJul 25, 06:10 UTC1h 10m
2026-07-24 BEL5EP BRU → CPH Jul 24, 19:35 UTCJul 24, 20:45 UTC1h 10m
2026-07-24 BEL8AJ OSL → BRU Jul 24, 16:20 UTCJul 24, 17:55 UTC1h 35m
2026-07-24 BEL9EU BRU → OSL Jul 24, 13:35 UTCJul 24, 15:15 UTC1h 40m
2026-07-24 BEL1EV VCE → BRU Jul 24, 10:40 UTCJul 24, 12:00 UTC1h 20m
2026-07-24 BEL6VP BRU → VCE Jul 24, 08:20 UTCJul 24, 09:25 UTC1h 5m
2026-07-24 BEL5AU OSL → BRU Jul 24, 05:00 UTCJul 24, 06:45 UTC1h 45m
2026-07-23 BEL1EW BRU → OSL Jul 23, 19:20 UTCJul 23, 21:05 UTC1h 45m
2026-07-23 BEL2ZH ARN → BRU Jul 23, 16:25 UTCJul 23, 17:55 UTC1h 30m
2026-07-23 BEL4BP BRU → ARN Jul 23, 13:20 UTCJul 23, 15:20 UTC2h 0m
2026-07-23 BEL1LH LHR → BRU Jul 23, 10:40 UTCJul 23, 11:20 UTC40m
2026-07-23 BEL2AH BRU → LHR Jul 23, 08:25 UTCJul 23, 09:10 UTC45m
2026-07-23 BEL5PQ LHR → LHR Jul 23, 06:20 UTCJul 23, 07:00 UTC40m
2026-07-22 BEL4AH BRU → LHR Jul 22, 19:55 UTCJul 22, 20:40 UTC45m
2026-07-22 BEL93B LHR → BRU Jul 22, 17:35 UTCJul 22, 18:15 UTC40m
2026-07-22 BEL6RA - Jul 22, 15:10 UTCJul 22, 16:05 UTC55m
2026-07-22 BEL4UT FAO → BRU Jul 22, 11:20 UTCJul 22, 13:35 UTC2h 15m
2026-07-21 BEL3874 ALC → BRU Jul 21, 17:50 UTCJul 21, 20:00 UTC2h 10m
2026-07-21 BEL3873 BRU → ALC Jul 21, 14:15 UTCJul 21, 16:15 UTC2h 0m
2026-07-21 BEL1VC - Jul 21, 10:00 UTCJul 21, 13:00 UTC3h 0m
2026-07-21 BEL3WF BRU → ATH Jul 21, 05:35 UTCJul 21, 08:20 UTC2h 45m
2026-07-20 BEL6DN GVA → BRU Jul 20, 18:05 UTCJul 20, 20:05 UTC2h 0m
2026-07-20 BEL4AR BRU → ALC Jul 20, 14:35 UTCJul 20, 16:45 UTC2h 10m
2026-07-20 BEL7AD MAD → BRU Jul 20, 11:00 UTCJul 20, 12:45 UTC1h 45m
2026-07-20 BEL5EN BRU → MAD Jul 20, 07:45 UTCJul 20, 09:40 UTC1h 55m
2026-07-19 BEL7LW OPO → BRU Jul 19, 16:40 UTCJul 19, 18:35 UTC1h 55m
2026-07-19 BEL3CP BRU → OPO Jul 19, 13:00 UTCJul 19, 15:10 UTC2h 10m
2026-07-19 BEL9FU MUC → BRU Jul 19, 10:20 UTCJul 19, 11:20 UTC1h 0m
2026-07-19 BEL5GR BRU → MUC Jul 19, 08:00 UTCJul 19, 09:10 UTC1h 10m
2026-07-19 BEL6NQ CPH → BRU Jul 19, 05:00 UTCJul 19, 06:15 UTC1h 15m
2026-07-18 BEL5EP BRU → CPH Jul 18, 19:20 UTCJul 18, 20:25 UTC1h 5m
2026-07-18 BEL4VL - Jul 18, 16:05 UTCJul 18, 18:00 UTC1h 55m
2026-07-18 BEL9KT BRU → BHX Jul 18, 12:55 UTCJul 18, 14:50 UTC1h 55m
2026-07-18 BEL9FU MUC → BRU Jul 18, 10:20 UTCJul 18, 11:30 UTC1h 10m
2026-07-18 BEL5GR BRU → MUC Jul 18, 08:05 UTCJul 18, 09:05 UTC1h 0m
2026-07-18 BEL6NQ CPH → BRU Jul 18, 05:20 UTCJul 18, 06:30 UTC1h 10m
2026-07-17 BEL5EP BRU → CPH Jul 17, 19:25 UTCJul 17, 20:35 UTC1h 10m
2026-07-17 BEL8AJ - Jul 17, 16:24 UTCJul 17, 18:00 UTC1h 35m
2026-07-17 BEL9EU - Jul 17, 13:35 UTCJul 17, 15:15 UTC1h 40m
2026-07-17 BEL47P PRG → BRU Jul 17, 10:44 UTCJul 17, 12:04 UTC1h 20m

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

Mode-S 44CDCF frequently asked

What is Mode-S code 44CDCF?
44CDCF is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SNO.
Where is Mode-S 44CDCF registered?
Mode-S code 44CDCF is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CDCF broadcasting right now?
Yes. Mode-S 44CDCF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CDCF, octal 21146717, decimal 4,509,135.
What flights does 44CDCF operate?
Mode-S 44CDCF has broadcast 20 distinct callsigns, including BEL7AD, BEL5EN, BEL2FR, BEL2FM, BEL8CZ.