Apparatus

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sensors Mode-S transponder

440D4C

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IXJ · BOEING 737-800

Hex
440D4C
Octal
21006514
Decimal
4,459,852
Country
AT
Tail
OE-IXJ
Type
B738
No current signal · last broadcast 8h ago
Flights observed
111
Distinct callsigns
20
Country
AT
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 440D4C.

Country allocation

The ICAO 24-bit address 440D4C falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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
TAY7FO - 8 2026-04-30
TAY6SL ASL Airlines Belgium 8 2026-05-13
TAY5TR ASL Airlines Belgium 8 2026-05-03
TAY1LA ASL Airlines Belgium 8 2026-04-30
TAY2MN ASL Airlines Belgium 7 2026-05-15
TAY1MN ASL Airlines Belgium 6 2026-05-15
TAY4RQ ASL Airlines Belgium 5 2026-05-07
TAY4PO - 5 2026-05-06
TAY3RQ ASL Airlines Belgium 5 2026-05-07
TAY6IX - 4 2026-05-08
TAY5SL - 4 2026-05-13
TAY3PO ASL Airlines Belgium 4 2026-05-06
TAY2VQ ASL Airlines Belgium 4 2026-05-27
TAY8VC - 3 2026-05-26
TAY6TR ASL Airlines Belgium 3 2026-04-23
FDX4678 FedEx Express 3 2026-05-21
FDX4463 - 3 2026-05-21
TAY9VL - 2 2026-05-26
TAY9SR - 2 2026-05-29
TAY7SR ASL Airlines Belgium 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAY9SR MXP → CDG May 29, 21:50 UTCMay 29, 22:55 UTC1h 5m
2026-05-29 TAY9SR - May 29, 19:05 UTCMay 29, 20:35 UTC1h 30m
2026-05-29 TAY7SR TSR → LGG May 29, 04:35 UTCMay 29, 05:35 UTC1h 0m
2026-05-29 TAY7SR TSR → LGG May 29, 02:10 UTCMay 29, 03:10 UTC1h 0m
2026-05-28 TAY2DI CDG → EMA May 28, 21:00 UTCMay 28, 22:10 UTC1h 10m
2026-05-28 TAY2DI CDG → EMA May 28, 19:15 UTCMay 28, 19:45 UTC30m
2026-05-28 TAY1DI EDI → NCL May 28, 05:15 UTCMay 28, 05:50 UTC35m
2026-05-28 TAY1DI EDI → NCL May 28, 02:35 UTCMay 28, 03:40 UTC1h 5m
2026-05-27 TAY2VQ VIT → CDG May 27, 20:25 UTCMay 27, 21:35 UTC1h 10m
2026-05-27 TAY2VQ VIT → CDG May 27, 18:25 UTCMay 27, 19:20 UTC55m
2026-05-27 TAY1VQ - May 27, 05:55 UTCMay 27, 06:44 UTC50m
2026-05-27 TAY1VQ - May 27, 02:19 UTCMay 27, 04:14 UTC1h 55m
2026-05-26 TAY9VL BCN → LGG May 26, 20:50 UTCMay 26, 22:25 UTC1h 35m
2026-05-26 TAY9VL - May 26, 19:05 UTCMay 26, 19:40 UTC35m
2026-05-26 TAY8VC - May 26, 05:34 UTCMay 26, 06:25 UTC50m
2026-05-26 TAY8VC - May 26, 03:05 UTCMay 26, 04:24 UTC1h 20m
2026-05-25 TAY4BC BCN → CDG May 25, 20:59 UTCMay 25, 22:19 UTC1h 20m
2026-05-22 TAY3BC - May 22, 02:40 UTCMay 22, 04:00 UTC1h 20m
2026-05-21 FDX4678 MUC → TLV May 21, 20:45 UTCMay 21, 22:40 UTC1h 55m
2026-05-21 FDX4463 - May 21, 02:30 UTCMay 21, 04:05 UTC1h 35m
2026-05-20 FDX4678 MUC → TLV May 20, 20:50 UTCMay 20, 22:30 UTC1h 40m
2026-05-20 FDX4463 - May 20, 02:30 UTCMay 20, 04:05 UTC1h 35m
2026-05-19 FDX4678 MUC → TLV May 19, 20:45 UTCMay 19, 22:30 UTC1h 45m
2026-05-19 FDX4463 - May 19, 02:35 UTCMay 19, 04:15 UTC1h 40m
2026-05-18 TAY2VQ VIT → CDG May 18, 20:25 UTCMay 18, 21:40 UTC1h 15m
2026-05-18 TAY2VQ VIT → CDG May 18, 18:10 UTCMay 18, 19:05 UTC54m
2026-05-17 TAY8VC - May 17, 19:10 UTCMay 17, 21:10 UTC2h 0m
2026-05-15 TAY2MN LIS → CMN May 15, 19:35 UTCMay 15, 21:55 UTC2h 20m
2026-05-15 TAY2MN LIS → CMN May 15, 17:20 UTCMay 15, 18:20 UTC1h 0m
2026-05-15 TAY1MN CDG → LIS May 15, 06:55 UTCMay 15, 07:45 UTC50m
2026-05-15 TAY1MN CDG → LIS May 15, 03:25 UTCMay 15, 05:20 UTC1h 55m
2026-05-14 TAY2MN LIS → CMN May 14, 20:10 UTCMay 14, 22:20 UTC2h 10m
2026-05-14 TAY2MN LIS → CMN May 14, 17:15 UTCMay 14, 18:05 UTC50m
2026-05-14 TAY1MN CDG → LIS May 14, 07:00 UTCMay 14, 07:55 UTC55m
2026-05-14 TAY1MN CDG → LIS May 14, 03:30 UTCMay 14, 05:30 UTC2h 0m
2026-05-13 TAY4982 - May 13, 19:50 UTCMay 13, 21:30 UTC1h 40m
2026-05-13 TAY6SL HAJ → OSL May 13, 18:10 UTCMay 13, 18:40 UTC30m
2026-05-13 TAY5SL CDG → OSL May 13, 03:00 UTCMay 13, 04:50 UTC1h 50m
2026-05-12 TAY6SL HAJ → OSL May 12, 20:05 UTCMay 12, 21:45 UTC1h 40m
2026-05-12 TAY6SL HAJ → OSL May 12, 18:20 UTCMay 12, 18:55 UTC35m
2026-05-12 TAY5SL CDG → OSL May 12, 03:05 UTCMay 12, 05:05 UTC2h 0m
2026-05-11 TAY6SL HAJ → OSL May 11, 20:10 UTCMay 11, 21:50 UTC1h 40m
2026-05-11 TAY6SL HAJ → OSL May 11, 18:15 UTCMay 11, 18:55 UTC40m
2026-05-10 TAY5SL - May 10, 16:55 UTCMay 10, 18:49 UTC1h 55m
2026-05-08 TAY6IX - May 8, 19:45 UTCMay 8, 21:55 UTC2h 10m
2026-05-08 TAY6IX - May 8, 17:45 UTCMay 8, 18:40 UTC55m
2026-05-08 TAY5IX - May 8, 04:29 UTCMay 8, 05:35 UTC1h 5m
2026-05-08 TAY5IX - May 8, 01:55 UTCMay 8, 03:14 UTC1h 20m
2026-05-07 TAY4RQ NUE → BRQ May 7, 21:25 UTCMay 7, 22:35 UTC1h 10m
2026-05-07 TAY4RQ NUE → BRQ May 7, 19:30 UTCMay 7, 20:15 UTC45m

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 OE-IXJ page for operator, model, and routing details .

Mode-S 440D4C frequently asked

What is Mode-S code 440D4C?
440D4C is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IXJ.
Where is Mode-S 440D4C registered?
Mode-S code 440D4C is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440D4C broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440D4C, octal 21006514, decimal 4,459,852.
What flights does 440D4C operate?
Mode-S 440D4C has broadcast 20 distinct callsigns, including TAY7FO, TAY6SL, TAY5TR, TAY1LA, TAY2MN.