Apparatus

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sensors Mode-S transponder

440B90

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IXB · BOEING 737-800

Hex
440B90
Octal
21005620
Decimal
4,459,408
Country
AT
Tail
OE-IXB
Type
B738
No current signal · last broadcast 3d ago
Flights observed
196
Distinct callsigns
20
Country
AT
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 440B90.

Country allocation

The ICAO 24-bit address 440B90 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
TAY5VA - 19 2026-06-17
TAY4VA - 19 2026-07-11
TAY6DN ASL Airlines Belgium 15 2026-05-29
TAY5DN ASL Airlines Belgium 14 2026-05-29
TAY2ST - 10 2026-07-03
TAY1ST - 10 2026-07-03
TAY7FO - 8 2026-07-10
TAY1KU - 8 2026-06-26
TAY7VC - 7 2026-07-09
TAY2VQ ASL Airlines Belgium 6 2026-05-14
TAY2KU - 6 2026-06-26
TAY8VC - 5 2026-05-15
TAY1VQ - 5 2026-06-02
TAY2MN ASL Airlines Belgium 4 2026-06-12
TAY1MN - 4 2026-06-12
TAY7CA ASL Airlines Belgium 3 2026-05-19
TAY1LA - 3 2026-07-10
TAY9VL - 2 2026-06-01
TAY9VC - 2 2026-05-13
TAY9IE - 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 TAY4VA - Jul 11, 03:20 UTCJul 11, 04:15 UTC55m
2026-07-10 TAY1LA FRA → CDG Jul 10, 20:45 UTCJul 10, 21:35 UTC50m
2026-07-10 TAY1LA - Jul 10, 16:50 UTCJul 10, 19:15 UTC2h 25m
2026-07-10 TAY7FO - Jul 10, 05:05 UTCJul 10, 06:05 UTC1h 0m
2026-07-10 TAY7FO - Jul 10, 02:05 UTCJul 10, 03:40 UTC1h 35m
2026-07-09 TAY7VC VCE → CDG Jul 9, 20:35 UTCJul 9, 22:00 UTC1h 25m
2026-07-09 TAY7VC MLA → VCE Jul 9, 17:20 UTCJul 9, 18:55 UTC1h 35m
2026-07-09 TAY7FO - Jul 9, 05:15 UTCJul 9, 06:15 UTC1h 0m
2026-07-09 TAY7FO - Jul 9, 02:00 UTCJul 9, 03:30 UTC1h 30m
2026-07-08 TAY7VC - Jul 8, 20:35 UTCJul 8, 22:00 UTC1h 25m
2026-07-08 TAY7VC - Jul 8, 17:35 UTCJul 8, 19:10 UTC1h 35m
2026-07-08 TAY7FO - Jul 8, 05:50 UTCJul 8, 06:55 UTC1h 5m
2026-07-08 TAY7FO - Jul 8, 03:05 UTCJul 8, 04:40 UTC1h 35m
2026-07-07 TAY7VC VCE → CDG Jul 7, 20:35 UTCJul 7, 22:00 UTC1h 25m
2026-07-07 TAY7VC MLA → VCE Jul 7, 17:20 UTCJul 7, 19:10 UTC1h 50m
2026-07-07 TAY7FO - Jul 7, 05:10 UTCJul 7, 06:20 UTC1h 10m
2026-07-07 TAY7FO - Jul 7, 02:20 UTCJul 7, 03:45 UTC1h 25m
2026-07-06 TAY6SO - Jul 6, 20:05 UTCJul 6, 21:45 UTC1h 40m
2026-07-06 TAY6SO - Jul 6, 18:20 UTCJul 6, 18:50 UTC30m
2026-07-05 TAY5SO - Jul 5, 16:50 UTCJul 5, 18:50 UTC2h 0m
2026-07-03 TAY2ST - Jul 3, 21:40 UTCJul 3, 22:25 UTC45m
2026-07-03 TAY1ST - Jul 3, 02:10 UTCJul 3, 02:55 UTC45m
2026-07-02 TAY2ST - Jul 2, 23:40 UTCJul 3, 00:25 UTC45m
2026-07-02 TAY1ST - Jul 2, 02:00 UTCJul 2, 02:45 UTC45m
2026-07-01 TAY2ST - Jul 1, 21:55 UTCJul 1, 22:35 UTC40m
2026-07-01 TAY1ST - Jul 1, 02:00 UTCJul 1, 02:45 UTC45m
2026-06-30 TAY2ST - Jun 30, 22:00 UTCJun 30, 22:40 UTC40m
2026-06-30 TAY1ST - Jun 30, 02:05 UTCJun 30, 02:50 UTC45m
2026-06-29 TAY2ST - Jun 29, 21:50 UTCJun 29, 22:24 UTC35m
2026-06-27 TAY1ST CDG → STN Jun 27, 22:20 UTCJun 27, 23:04 UTC45m
2026-06-26 TAY2KU ARN → CDG Jun 26, 21:04 UTCJun 26, 23:19 UTC2h 15m
2026-06-26 TAY2KU - Jun 26, 19:00 UTCJun 26, 19:30 UTC30m
2026-06-26 TAY1KU - Jun 26, 05:19 UTCJun 26, 06:15 UTC55m
2026-06-26 TAY1KU - Jun 26, 02:40 UTCJun 26, 04:14 UTC1h 35m
2026-06-25 TAY2KU - Jun 25, 18:50 UTCJun 25, 21:25 UTC2h 35m
2026-06-25 TAY1KU - Jun 25, 05:15 UTCJun 25, 06:05 UTC50m
2026-06-25 TAY1KU - Jun 25, 02:39 UTCJun 25, 04:20 UTC1h 40m
2026-06-24 TAY2KU - Jun 24, 18:44 UTCJun 24, 21:14 UTC2h 30m
2026-06-24 TAY1KU - Jun 24, 04:59 UTCJun 24, 05:54 UTC55m
2026-06-24 TAY1KU CDG → GOT Jun 24, 02:24 UTCJun 24, 04:05 UTC1h 40m
2026-06-23 TAY2KU - Jun 23, 18:55 UTCJun 23, 21:20 UTC2h 25m
2026-06-23 TAY1KU - Jun 23, 06:09 UTCJun 23, 07:05 UTC55m
2026-06-23 TAY1KU - Jun 23, 02:45 UTCJun 23, 04:25 UTC1h 40m
2026-06-22 TAY2KU - Jun 22, 18:54 UTCJun 22, 21:25 UTC2h 30m
2026-06-21 TAY1EH - Jun 21, 19:29 UTCJun 21, 19:45 UTC15m
2026-06-21 TAY1EH - Jun 21, 15:49 UTCJun 21, 18:20 UTC2h 30m
2026-06-19 TAY1LA FRA → CDG Jun 19, 20:49 UTCJun 19, 21:39 UTC50m
2026-06-18 TAY5TR CDG → FRA Jun 18, 02:10 UTCJun 18, 03:05 UTC55m
2026-06-17 TAY5VA LYS → CDG Jun 17, 20:45 UTCJun 17, 21:40 UTC55m
2026-06-17 TAY4VA - Jun 17, 02:35 UTCJun 17, 03:15 UTC40m

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

Mode-S 440B90 frequently asked

What is Mode-S code 440B90?
440B90 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IXB.
Where is Mode-S 440B90 registered?
Mode-S code 440B90 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440B90 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440B90, octal 21005620, decimal 4,459,408.
What flights does 440B90 operate?
Mode-S 440B90 has broadcast 20 distinct callsigns, including TAY5VA, TAY4VA, TAY6DN, TAY5DN, TAY2ST.