Apparatus

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sensors Mode-S transponder

44CDCD

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SNM · AIRBUS A-320

Hex
44CDCD
Octal
21146715
Decimal
4,509,133
Country
BE
Tail
OO-SNM
Type
A320
Broadcasting now · callsign BEL4MR · 38,000 ft
Flights observed
496
Distinct callsigns
20
Country
BE
Last broadcast
1h ago

Current position

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

Country allocation

The ICAO 24-bit address 44CDCD 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
BEL6TC - 8 2026-07-06
BEL3ZY - 8 2026-07-06
BEL9SE - 7 2026-07-10
BEL92K Brussels Airlines 7 2026-07-04
BEL7ZC - 7 2026-07-05
BEL6VP - 7 2026-06-18
BEL5EN - 7 2026-07-13
BEL47P - 7 2026-07-03
BEL3JZ - 7 2026-06-30
BEL2NM - 7 2026-07-03
BEL2HJ - 7 2026-06-30
BEL1EV - 7 2026-06-18
BEL9QH Brussels Airlines 6 2026-05-31
BEL7AD - 6 2026-07-13
BEL2FR Brussels Airlines 6 2026-06-02
BEL2FM Brussels Airlines 6 2026-06-01
BEL2CA - 6 2026-07-10
BEL1UF Brussels Airlines 6 2026-05-18
BEL9HR Brussels Airlines 5 2026-05-18
BEL9FL - 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BEL5TR - Jul 14, 14:20 UTCJul 14, 16:30 UTC2h 10m
2026-07-14 BEL4UG TLS → BRU Jul 14, 11:40 UTCJul 14, 12:55 UTC1h 15m
2026-07-14 BEL8WD BRU → TLS Jul 14, 09:05 UTCJul 14, 10:20 UTC1h 15m
2026-07-14 BEL8HW - Jul 14, 06:05 UTCJul 14, 07:25 UTC1h 20m
2026-07-13 BEL3UC BRU → GOT Jul 13, 20:55 UTCJul 13, 22:10 UTC1h 15m
2026-07-13 BEL7TA - Jul 13, 18:10 UTCJul 13, 19:30 UTC1h 20m
2026-07-13 BEL4DQ BRU → GOT Jul 13, 16:05 UTCJul 13, 17:20 UTC1h 15m
2026-07-13 BEL7AD - Jul 13, 13:00 UTCJul 13, 14:55 UTC1h 55m
2026-07-13 BEL5EN BRU → MAD Jul 13, 09:05 UTCJul 13, 11:00 UTC1h 55m
2026-07-12 BEL5GT - Jul 12, 19:20 UTCJul 12, 21:35 UTC2h 15m
2026-07-12 BEL4GU - Jul 12, 15:20 UTCJul 12, 18:01 UTC2h 40m
2026-07-12 BEL3HE LIS → BRU Jul 12, 11:55 UTCJul 12, 14:01 UTC2h 5m
2026-07-12 BEL2DY BRU → LIS Jul 12, 07:45 UTCJul 12, 10:15 UTC2h 30m
2026-07-11 BEL2ET LIS → BRU Jul 11, 22:01 UTCJul 12, 00:15 UTC2h 15m
2026-07-11 BEL2DT BRU → LIS Jul 11, 18:25 UTCJul 11, 20:55 UTC2h 30m
2026-07-11 BEL2YK - Jul 11, 14:15 UTCJul 11, 16:20 UTC2h 5m
2026-07-11 BEL6EP - Jul 11, 10:30 UTCJul 11, 12:55 UTC2h 25m
2026-07-11 BEL8PZ - Jul 11, 08:40 UTCJul 11, 09:10 UTC30m
2026-07-11 BEL8KV BRU → CDG Jul 11, 06:40 UTCJul 11, 07:25 UTC45m
2026-07-10 BEL5PR FRA → BRU Jul 10, 19:50 UTCJul 10, 20:35 UTC45m
2026-07-10 BEL2LG BRU → FRA Jul 10, 17:45 UTCJul 10, 18:25 UTC40m
2026-07-10 BEL2CA - Jul 10, 15:40 UTCJul 10, 16:40 UTC1h 0m
2026-07-10 BEL9SE BRU → GVA Jul 10, 13:25 UTCJul 10, 14:30 UTC1h 5m
2026-07-10 BEL4UG TLS → BRU Jul 10, 11:00 UTCJul 10, 12:15 UTC1h 15m
2026-07-10 BEL8WD BRU → TLS Jul 10, 08:30 UTCJul 10, 09:45 UTC1h 15m
2026-07-10 BEL6NQ CPH → BRU Jul 10, 05:10 UTCJul 10, 06:30 UTC1h 20m
2026-07-09 BEL5EP BRU → CPH Jul 9, 19:25 UTCJul 9, 20:30 UTC1h 5m
2026-07-09 BEL8AJ OSL → BRU Jul 9, 16:35 UTCJul 9, 18:15 UTC1h 40m
2026-07-09 BEL9EU BRU → OSL Jul 9, 14:00 UTCJul 9, 15:35 UTC1h 35m
2026-07-09 BEL6CT - Jul 9, 11:00 UTCJul 9, 12:30 UTC1h 30m
2026-07-09 BEL7FP BRU → BCN Jul 9, 08:05 UTCJul 9, 09:45 UTC1h 40m
2026-07-09 BEL6WA BUD → BRU Jul 9, 04:50 UTCJul 9, 06:40 UTC1h 50m
2026-07-08 BEL7JU - Jul 8, 19:25 UTCJul 8, 21:00 UTC1h 35m
2026-07-08 BEL4WF BUD → BRU Jul 8, 16:15 UTCJul 8, 18:00 UTC1h 45m
2026-07-08 BEL6PR - Jul 8, 13:25 UTCJul 8, 15:00 UTC1h 35m
2026-07-07 BEL2ET LIS → BRU Jul 7, 20:45 UTCJul 7, 23:00 UTC2h 15m
2026-07-07 BEL2DT BRU → LIS Jul 7, 16:10 UTCJul 7, 18:40 UTC2h 30m
2026-07-07 BEL3HE LIS → BRU Jul 7, 12:20 UTCJul 7, 14:35 UTC2h 15m
2026-07-07 BEL2DY - Jul 7, 08:00 UTCJul 7, 10:20 UTC2h 20m
2026-07-06 BEL1PA - Jul 6, 18:50 UTCJul 6, 20:45 UTC1h 55m
2026-07-06 BEL7JV BRU → VLC Jul 6, 16:05 UTCJul 6, 17:45 UTC1h 40m
2026-07-06 BEL8HR OPO → BRU Jul 6, 12:40 UTCJul 6, 14:40 UTC2h 0m
2026-07-06 BEL1MG - Jul 6, 09:10 UTCJul 6, 11:15 UTC2h 5m
2026-07-06 BEL6TC - Jul 6, 06:55 UTCJul 6, 07:45 UTC50m
2026-07-06 BEL3ZY - Jul 6, 05:00 UTCJul 6, 05:35 UTC35m
2026-07-05 BEL6QG RHO → BRU Jul 5, 17:45 UTCJul 5, 21:15 UTC3h 30m
2026-07-05 BEL6YD - Jul 5, 13:20 UTCJul 5, 16:20 UTC3h 0m
2026-07-05 BEL9FU - Jul 5, 10:20 UTCJul 5, 11:20 UTC1h 0m
2026-07-05 BEL5GR BRU → MUC Jul 5, 08:00 UTCJul 5, 09:00 UTC1h 0m
2026-07-05 BEL7ZC GVA → BRU Jul 5, 05:20 UTCJul 5, 06:15 UTC55m

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

Mode-S 44CDCD frequently asked

What is Mode-S code 44CDCD?
44CDCD is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SNM.
Where is Mode-S 44CDCD registered?
Mode-S code 44CDCD is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CDCD broadcasting right now?
Yes. Mode-S 44CDCD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CDCD, octal 21146715, decimal 4,509,133.
What flights does 44CDCD operate?
Mode-S 44CDCD has broadcast 20 distinct callsigns, including BEL6TC, BEL3ZY, BEL9SE, BEL92K, BEL7ZC.