Apparatus

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sensors Mode-S transponder

44CE72

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SSR · AIRBUS A-319

Hex
44CE72
Octal
21147162
Decimal
4,509,298
Country
BE
Tail
OO-SSR
Type
A319
No current signal · last broadcast 1d ago
Flights observed
508
Distinct callsigns
20
Country
BE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 44CE72.

Country allocation

The ICAO 24-bit address 44CE72 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
BEL1ZK Brussels Airlines 11 2026-07-26
BEL9BP Brussels Airlines 10 2026-07-23
BEL7LF Brussels Airlines 10 2026-07-24
BEL2PN Brussels Airlines 10 2026-07-23
BEL9SW Brussels Airlines 9 2026-07-24
BEL8YE - 9 2026-07-08
BEL8KG - 9 2026-07-15
BEL7GZ Brussels Airlines 9 2026-07-21
BEL5LY - 9 2026-07-15
BEL9UR Brussels Airlines 8 2026-07-26
BEL5MQ Brussels Airlines 8 2026-07-21
BEL9KU Brussels Airlines 7 2026-07-26
BEL9CJ Brussels Airlines 7 2026-07-24
BEL8UK Brussels Airlines 7 2026-07-24
BEL8LT Brussels Airlines 7 2026-07-26
BEL5WE Brussels Airlines 7 2026-07-25
BEL4CB Brussels Airlines 7 2026-07-24
BEL3LZ Brussels Airlines 7 2026-07-25
BEL9EV Brussels Airlines 6 2026-07-26
BEL8HQ - 6 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BEL1ZK BRU → BER Jul 26, 19:25 UTCJul 26, 20:25 UTC1h 0m
2026-07-26 BEL3CQ BRU → ALC Jul 26, 16:50 UTCJul 26, 17:55 UTC1h 5m
2026-07-26 BEL9EV BRU → MUC Jul 26, 14:40 UTCJul 26, 15:40 UTC1h 0m
2026-07-26 BEL9UR MRS → BRU Jul 26, 11:35 UTCJul 26, 13:05 UTC1h 30m
2026-07-26 BEL9KU BRU → MRS Jul 26, 09:15 UTCJul 26, 10:30 UTC1h 15m
2026-07-26 BEL7NL GVA → BRU Jul 26, 06:30 UTCJul 26, 07:25 UTC56m
2026-07-26 BEL8LT ALC → BRU Jul 26, 04:45 UTCJul 26, 05:35 UTC50m
2026-07-25 BEL5GT AGP → BRU Jul 25, 18:45 UTCJul 25, 21:15 UTC2h 30m
2026-07-25 BEL4GU BRU → AGP Jul 25, 14:35 UTCJul 25, 17:10 UTC2h 35m
2026-07-25 BEL3LZ LIN → BRU Jul 25, 11:30 UTCJul 25, 12:35 UTC1h 5m
2026-07-25 BEL5WE BRU → LIN Jul 25, 09:05 UTCJul 25, 10:15 UTC1h 10m
2026-07-25 BEL9DN FRA → BRU Jul 25, 06:50 UTCJul 25, 07:25 UTC35m
2026-07-25 BEL8QB BRU → FRA Jul 25, 04:45 UTCJul 25, 05:15 UTC30m
2026-07-24 BEL9CJ BRU → NDR Jul 24, 17:50 UTCJul 24, 18:25 UTC35m
2026-07-24 BEL8UK BRU → FRA Jul 24, 15:40 UTCJul 24, 16:20 UTC40m
2026-07-24 BEL9SW MUC → BRU Jul 24, 13:10 UTCJul 24, 14:10 UTC1h 0m
2026-07-24 BEL7LF BRU → MUC Jul 24, 11:05 UTCJul 24, 12:00 UTC55m
2026-07-24 BEL7LF BRU → MUC Jul 24, 07:40 UTCJul 24, 08:50 UTC1h 10m
2026-07-24 BEL4CB BRU → LIN Jul 24, 05:25 UTCJul 24, 06:30 UTC1h 5m
2026-07-23 BEL5LC BRU → MXP Jul 23, 19:30 UTCJul 23, 21:25 UTC1h 55m
2026-07-23 BEL3WD BRU → FCO Jul 23, 16:45 UTCJul 23, 18:10 UTC1h 25m
2026-07-23 BEL9BP MUC → BRU Jul 23, 14:45 UTCJul 23, 15:45 UTC1h 0m
2026-07-23 BEL2PN BRU → SPU Jul 23, 12:35 UTCJul 23, 13:35 UTC1h 0m
2026-07-23 BEL47P PRG → BRU Jul 23, 10:25 UTCJul 23, 11:25 UTC1h 0m
2026-07-23 BEL2NM BRU → PRG Jul 23, 08:25 UTCJul 23, 09:30 UTC1h 5m
2026-07-23 BEL1PD MRS → BRU Jul 23, 04:50 UTCJul 23, 06:10 UTC1h 20m
2026-07-22 BEL9WB BRU → MRS Jul 22, 19:30 UTCJul 22, 20:45 UTC1h 15m
2026-07-22 BEL1BT IAD → BRU Jul 22, 17:10 UTCJul 22, 18:20 UTC1h 10m
2026-07-22 BEL6ZH - Jul 22, 14:45 UTCJul 22, 15:50 UTC1h 5m
2026-07-22 BEL9UR MRS → BRU Jul 22, 11:45 UTCJul 22, 13:10 UTC1h 25m
2026-07-22 BEL8LT ALC → BRU Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-21 BEL5LC BRU → MXP Jul 21, 19:35 UTCJul 21, 21:20 UTC1h 45m
2026-07-21 BEL3WD - Jul 21, 16:30 UTCJul 21, 18:10 UTC1h 40m
2026-07-21 BEL9BP MUC → BRU Jul 21, 14:20 UTCJul 21, 15:15 UTC55m
2026-07-21 BEL2PN BRU → SPU Jul 21, 12:10 UTCJul 21, 13:05 UTC55m
2026-07-21 BEL5MQ HAM → BRU Jul 21, 09:45 UTCJul 21, 10:30 UTC45m
2026-07-21 BEL7GZ BRU → HAM Jul 21, 07:50 UTCJul 21, 08:45 UTC55m
2026-07-21 BEL1PD MRS → BRU Jul 21, 05:00 UTCJul 21, 06:15 UTC1h 15m
2026-07-20 BEL9WB BRU → MRS Jul 20, 19:25 UTCJul 20, 20:50 UTC1h 25m
2026-07-20 BEL3CQ BRU → ALC Jul 20, 17:00 UTCJul 20, 17:55 UTC55m
2026-07-20 BEL9EV BRU → MUC Jul 20, 14:55 UTCJul 20, 15:50 UTC55m
2026-07-20 BEL23U EDI → BRU Jul 20, 12:50 UTCJul 20, 13:55 UTC1h 5m
2026-07-20 BEL4OZ BRU → EDI Jul 20, 10:00 UTCJul 20, 11:15 UTC1h 15m
2026-07-20 BEL8CL BRU → KGS Jul 20, 05:15 UTCJul 20, 06:00 UTC45m
2026-07-19 BEL3TX - Jul 19, 19:30 UTCJul 19, 20:20 UTC50m
2026-07-19 BEL4WF BUD → BRU Jul 19, 16:25 UTCJul 19, 18:10 UTC1h 45m
2026-07-19 BEL6PR BRU → BUD Jul 19, 13:30 UTCJul 19, 15:00 UTC1h 30m
2026-07-19 BEL1EV VCE → BRU Jul 19, 10:40 UTCJul 19, 12:00 UTC1h 20m
2026-07-19 BEL6VP BRU → VCE Jul 19, 08:15 UTCJul 19, 09:25 UTC1h 10m
2026-07-18 BEL5KV - Jul 18, 17:10 UTCJul 18, 19:20 UTC2h 10m

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

Mode-S 44CE72 frequently asked

What is Mode-S code 44CE72?
44CE72 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SSR.
Where is Mode-S 44CE72 registered?
Mode-S code 44CE72 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CE72 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CE72, octal 21147162, decimal 4,509,298.
What flights does 44CE72 operate?
Mode-S 44CE72 has broadcast 20 distinct callsigns, including BEL1ZK, BEL9BP, BEL7LF, BEL2PN, BEL9SW.