Apparatus

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sensors Mode-S transponder

440AF4

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IWB · BOEING 737-800

Hex
440AF4
Octal
21005364
Decimal
4,459,252
Country
AT
Tail
OE-IWB
Type
B738
No current signal · last broadcast 5h ago
Flights observed
91
Distinct callsigns
20
Country
AT
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 440AF4.

Country allocation

The ICAO 24-bit address 440AF4 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
TAY2MN ASL Airlines Belgium 8 2026-05-21
TAY1MN ASL Airlines Belgium 8 2026-05-21
TAY4RQ ASL Airlines Belgium 7 2026-05-25
TAY8VC - 6 2026-05-08
TAY6SL ASL Airlines Belgium 6 2026-05-07
TAY3RQ ASL Airlines Belgium 6 2026-05-15
TAY9VC - 4 2026-04-28
TAY2VQ ASL Airlines Belgium 4 2026-04-29
TAY2RQ - 4 2026-05-24
TAY5SL - 3 2026-05-07
TAY8SR - 2 2026-05-06
TAY7SR ASL Airlines Belgium 2 2026-05-06
TAY5VC - 2 2026-05-08
TAY5VA ASL Airlines Belgium 2 2026-05-18
TAY5TR ASL Airlines Belgium 2 2026-05-26
TAY5DN ASL Airlines Belgium 2 2026-05-22
TAY4PO - 2 2026-05-29
TAY2ST - 2 2026-04-23
TAY1VQ - 2 2026-04-29
TAY1ST - 2 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAY4PO - May 29, 22:15 UTCMay 29, 23:25 UTC1h 10m
2026-05-29 TAY4PO - May 29, 20:20 UTCMay 29, 21:10 UTC50m
2026-05-29 TAY3PO OPO → OPO May 29, 03:25 UTCMay 29, 05:10 UTC1h 45m
2026-05-28 TAY4BC BCN → CDG May 28, 21:05 UTCMay 28, 22:35 UTC1h 30m
2026-05-28 TAY3BC - May 28, 02:55 UTCMay 28, 04:10 UTC1h 15m
2026-05-26 TAY6TR STR → CDG May 26, 20:45 UTCMay 26, 21:44 UTC1h 0m
2026-05-26 TAY5TR NUE → STR May 26, 05:25 UTCMay 26, 05:45 UTC20m
2026-05-26 TAY5TR NUE → STR May 26, 02:35 UTCMay 26, 03:25 UTC50m
2026-05-25 TAY4RQ NUE → BRQ May 25, 19:35 UTCMay 25, 21:09 UTC1h 35m
2026-05-24 TAY2RQ - May 24, 21:30 UTCMay 24, 21:45 UTC15m
2026-05-24 TAY2RQ - May 24, 18:45 UTCMay 24, 20:30 UTC1h 45m
2026-05-22 TAY6DN BLL → GDN May 22, 18:20 UTCMay 22, 20:15 UTC1h 55m
2026-05-22 TAY5DN CDG → PRG May 22, 03:55 UTCMay 22, 04:55 UTC1h 0m
2026-05-22 TAY5DN CDG → PRG May 22, 01:50 UTCMay 22, 02:50 UTC1h 0m
2026-05-21 TAY2MN LIS → CMN May 21, 19:05 UTCMay 21, 20:55 UTC1h 50m
2026-05-21 TAY2MN LIS → CMN May 21, 17:20 UTCMay 21, 18:05 UTC45m
2026-05-21 TAY1MN CDG → LIS May 21, 06:55 UTCMay 21, 07:45 UTC50m
2026-05-21 TAY1MN CDG → LIS May 21, 03:20 UTCMay 21, 05:40 UTC2h 20m
2026-05-20 TAY2MN LIS → CMN May 20, 19:00 UTCMay 20, 21:05 UTC2h 5m
2026-05-20 TAY2MN LIS → CMN May 20, 17:00 UTCMay 20, 17:50 UTC50m
2026-05-20 TAY1MN CDG → LIS May 20, 07:00 UTCMay 20, 07:50 UTC50m
2026-05-20 TAY1MN CDG → LIS May 20, 03:25 UTCMay 20, 05:40 UTC2h 16m
2026-05-19 TAY2MN LIS → CMN May 19, 19:10 UTCMay 19, 21:10 UTC2h 0m
2026-05-19 TAY2MN LIS → CMN May 19, 17:15 UTCMay 19, 18:10 UTC55m
2026-05-19 TAY1MN CDG → LIS May 19, 06:50 UTCMay 19, 07:50 UTC1h 0m
2026-05-19 TAY1MN CDG → LIS May 19, 03:25 UTCMay 19, 05:40 UTC2h 15m
2026-05-18 TAY5VA LYS → CDG May 18, 20:45 UTCMay 18, 21:35 UTC50m
2026-05-18 TAY5VA LYS → CDG May 18, 19:15 UTCMay 18, 19:35 UTC20m
2026-05-16 TAY4VA CDG → GVA May 16, 03:30 UTCMay 16, 04:20 UTC50m
2026-05-15 TAY4RQ NUE → BRQ May 15, 21:50 UTCMay 15, 22:55 UTC1h 5m
2026-05-15 TAY4RQ NUE → BRQ May 15, 19:35 UTCMay 15, 20:35 UTC1h 0m
2026-05-15 TAY3RQ CDG → PRG May 15, 05:10 UTCMay 15, 05:40 UTC30m
2026-05-15 TAY3RQ CDG → PRG May 15, 02:45 UTCMay 15, 04:05 UTC1h 20m
2026-05-14 TAY4RQ NUE → BRQ May 14, 19:30 UTCMay 14, 21:00 UTC1h 30m
2026-05-14 TAY3RQ CDG → PRG May 14, 04:55 UTCMay 14, 05:25 UTC30m
2026-05-14 TAY3RQ CDG → PRG May 14, 02:40 UTCMay 14, 03:55 UTC1h 15m
2026-05-13 TAY2MN LIS → CMN May 13, 19:10 UTCMay 13, 21:15 UTC2h 5m
2026-05-13 TAY2MN LIS → CMN May 13, 17:10 UTCMay 13, 17:55 UTC45m
2026-05-13 TAY1MN CDG → LIS May 13, 07:10 UTCMay 13, 08:00 UTC50m
2026-05-13 TAY1MN CDG → LIS May 13, 03:30 UTCMay 13, 05:45 UTC2h 15m
2026-05-12 TAY4RQ NUE → BRQ May 12, 19:30 UTCMay 12, 21:10 UTC1h 40m
2026-05-12 TAY3RQ CDG → PRG May 12, 05:10 UTCMay 12, 05:35 UTC25m
2026-05-12 TAY3RQ CDG → PRG May 12, 02:50 UTCMay 12, 04:05 UTC1h 15m
2026-05-11 TAY4RQ NUE → BRQ May 11, 21:25 UTCMay 11, 22:35 UTC1h 9m
2026-05-11 TAY4RQ NUE → BRQ May 11, 19:40 UTCMay 11, 20:25 UTC45m
2026-05-10 TAY2RQ - May 10, 21:35 UTCMay 10, 22:05 UTC30m
2026-05-10 TAY2RQ - May 10, 18:45 UTCMay 10, 20:20 UTC1h 35m
2026-05-08 TAY5VC BCN → CDG May 8, 21:00 UTCMay 8, 22:15 UTC1h 15m
2026-05-08 TAY5VC VLC → BCN May 8, 19:05 UTCMay 8, 19:45 UTC40m
2026-05-08 TAY8VC - May 8, 05:35 UTCMay 8, 06:14 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-IWB page for operator, model, and routing details .

Mode-S 440AF4 frequently asked

What is Mode-S code 440AF4?
440AF4 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IWB.
Where is Mode-S 440AF4 registered?
Mode-S code 440AF4 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440AF4 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440AF4, octal 21005364, decimal 4,459,252.
What flights does 440AF4 operate?
Mode-S 440AF4 has broadcast 20 distinct callsigns, including TAY2MN, TAY1MN, TAY4RQ, TAY8VC, TAY6SL.