Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
Broadcasting now · callsign BEL4CB · 38,450 ft
Flights observed
553
Distinct callsigns
20
Country
BE
Last broadcast
Jul 26, 21:25 UTC

Current position

44CDC9 is currently broadcasting. Map zoomed to live position.

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
BEL3ZY Brussels Airlines 9 2026-07-22
BEL2HV - 9 2026-07-15
BEL9PW - 8 2026-07-01
BEL8NV - 8 2026-07-01
BEL6TC - 8 2026-07-16
BEL5UC - 8 2026-07-15
BEL8HR - 7 2026-07-22
BEL6HF - 7 2026-06-29
BEL5PR - 7 2026-07-02
BEL5CG - 7 2026-06-29
BEL4RE Brussels Airlines 7 2026-07-26
BEL2LG Brussels Airlines 7 2026-07-02
BEL9SE - 6 2026-07-08
BEL9EL Brussels Airlines 6 2026-07-25
BEL72R Brussels Airlines 6 2026-07-24
BEL5DP Brussels Airlines 6 2026-07-26
BEL4GV Brussels Airlines 6 2026-07-24
BEL2CA - 6 2026-07-08
BEL1YC Brussels Airlines 6 2026-07-25
BEL1MG - 6 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BEL9FL BRU → ARN Jul 26, 19:35 UTCJul 26, 21:20 UTC1h 45m
2026-07-26 BEL3714 BIO → BRU Jul 26, 17:00 UTCJul 26, 18:25 UTC1h 25m
2026-07-26 BEL3713 BRU → BIO Jul 26, 13:05 UTCJul 26, 14:20 UTC1h 15m
2026-07-26 BEL5DP BIO → BRU Jul 26, 10:20 UTCJul 26, 11:55 UTC1h 35m
2026-07-26 BEL4RE BRU → BIO Jul 26, 07:30 UTCJul 26, 08:40 UTC1h 10m
2026-07-25 BEL9EL FCO → BRU Jul 25, 10:00 UTCJul 25, 11:45 UTC1h 45m
2026-07-25 BEL1YC BRU → FCO Jul 25, 06:50 UTCJul 25, 08:30 UTC1h 40m
2026-07-24 BEL72R GVA → BRU Jul 24, 20:10 UTCJul 24, 21:00 UTC50m
2026-07-24 BEL4GV BRU → GVA Jul 24, 18:10 UTCJul 24, 19:05 UTC55m
2026-07-24 BEL5DP BIO → BRU Jul 24, 15:25 UTCJul 24, 16:40 UTC1h 15m
2026-07-24 BEL4RE BRU → BIO Jul 24, 12:45 UTCJul 24, 14:15 UTC1h 30m
2026-07-24 BEL47P PRG → BRU Jul 24, 10:30 UTCJul 24, 11:30 UTC1h 0m
2026-07-24 BEL2NM BRU → PRG Jul 24, 08:10 UTCJul 24, 09:15 UTC1h 5m
2026-07-24 BEL7ZC GVA → BRU Jul 24, 05:40 UTCJul 24, 06:40 UTC1h 0m
2026-07-23 BEL92K BRU → GVA Jul 23, 19:05 UTCJul 23, 19:55 UTC50m
2026-07-23 BEL75Y KGS → BRU Jul 23, 09:20 UTCJul 23, 12:40 UTC3h 20m
2026-07-23 BEL1TE BRU → KGS Jul 23, 04:30 UTCJul 23, 07:20 UTC2h 50m
2026-07-22 BEL2ET LIS → BRU Jul 22, 20:15 UTCJul 22, 22:25 UTC2h 10m
2026-07-22 BEL2DT BRU → LIS Jul 22, 15:45 UTCJul 22, 18:40 UTC2h 55m
2026-07-22 BEL8HR OPO → BRU Jul 22, 12:20 UTCJul 22, 14:15 UTC1h 55m
2026-07-22 BEL3ZY BRU → CDG Jul 22, 04:55 UTCJul 22, 05:25 UTC30m
2026-07-21 BEL8EM TNG → BRU Jul 21, 20:10 UTCJul 21, 22:30 UTC2h 20m
2026-07-21 BEL5AL - Jul 21, 16:35 UTCJul 21, 19:05 UTC2h 30m
2026-07-21 BEL56B - Jul 21, 11:20 UTCJul 21, 15:00 UTC3h 40m
2026-07-21 BEL46C BRU → AYT Jul 21, 04:15 UTCJul 21, 07:35 UTC3h 20m
2026-07-20 BEL6FA - Jul 20, 20:10 UTCJul 20, 22:15 UTC2h 5m
2026-07-20 BEL6AT - Jul 20, 15:30 UTCJul 20, 17:35 UTC2h 5m
2026-07-20 BEL3HE LIS → BRU Jul 20, 11:30 UTCJul 20, 13:45 UTC2h 15m
2026-07-20 BEL2DY BRU → LIS Jul 20, 07:45 UTCJul 20, 10:20 UTC2h 35m
2026-07-20 BEL2FR MAD → BRU Jul 20, 04:40 UTCJul 20, 06:30 UTC1h 50m
2026-07-19 BEL2FM - Jul 19, 20:00 UTCJul 19, 22:00 UTC2h 0m
2026-07-19 BEL9PY - Jul 19, 16:25 UTCJul 19, 18:05 UTC1h 40m
2026-07-19 BEL5XD - Jul 19, 13:35 UTCJul 19, 15:10 UTC1h 35m
2026-07-19 BEL5DP - Jul 19, 10:15 UTCJul 19, 11:35 UTC1h 20m
2026-07-19 BEL4RE - Jul 19, 07:30 UTCJul 19, 08:50 UTC1h 20m
2026-07-19 BEL7ZC - Jul 19, 05:20 UTCJul 19, 06:10 UTC50m
2026-07-18 BEL92K - Jul 18, 18:50 UTCJul 18, 19:40 UTC50m
2026-07-18 BEL4AA - Jul 18, 13:45 UTCJul 18, 16:50 UTC3h 5m
2026-07-18 BEL7CM - Jul 18, 08:55 UTCJul 18, 11:45 UTC2h 50m
2026-07-18 BEL2FR MAD → BRU Jul 18, 04:40 UTCJul 18, 06:30 UTC1h 50m
2026-07-17 BEL2FM - Jul 17, 20:10 UTCJul 17, 22:15 UTC2h 5m
2026-07-17 BEL8MN CPH → BRU Jul 17, 16:44 UTCJul 17, 17:55 UTC1h 10m
2026-07-17 BEL7WA BRU → CPH Jul 17, 14:35 UTCJul 17, 15:40 UTC1h 5m
2026-07-17 BEL6CT BCN → BRU Jul 17, 11:25 UTCJul 17, 13:05 UTC1h 40m
2026-07-17 BEL7FP BRU → BCN Jul 17, 08:20 UTCJul 17, 10:00 UTC1h 40m
2026-07-16 BEL9CJ FRA → BRU Jul 16, 17:49 UTCJul 16, 18:19 UTC30m
2026-07-16 BEL8UK - Jul 16, 16:00 UTCJul 16, 16:35 UTC35m
2026-07-16 BEL8HR OPO → BRU Jul 16, 12:34 UTCJul 16, 14:25 UTC1h 50m
2026-07-16 BEL1MG BRU → OPO Jul 16, 08:55 UTCJul 16, 11:10 UTC2h 15m
2026-07-16 BEL6TC - Jul 16, 07:00 UTCJul 16, 07:30 UTC30m

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?
Yes. Mode-S 44CDC9 is currently airborne.
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 BEL3ZY, BEL2HV, BEL9PW, BEL8NV, BEL6TC.