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 4h ago
Flights observed
186
Distinct callsigns
20
Country
AT
Last broadcast
4h 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
TAY7FO - 26 2026-07-05
TAY7VC - 14 2026-07-06
TAY2MN - 10 2026-07-13
TAY1MN - 10 2026-07-13
TAY4RQ ASL Airlines Belgium 9 2026-07-07
TAY8VC - 8 2026-07-08
TAY6SO - 8 2026-06-05
TAY3RQ - 8 2026-07-07
TAY1LA - 7 2026-07-03
TAY6SL ASL Airlines Belgium 6 2026-05-07
TAY4702 ASL Airlines Belgium 6 2026-06-30
TAY2RQ - 6 2026-06-28
TAY5SO - 5 2026-07-14
TAY2ST - 5 2026-06-17
TAY1ST - 5 2026-06-17
TAY9VC - 4 2026-04-28
TAY4PO - 4 2026-06-19
TAY2VQ ASL Airlines Belgium 4 2026-04-29
TAY5SL - 3 2026-05-07
FDX4774 - 3 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TAY5SO - Jul 14, 03:05 UTCJul 14, 05:00 UTC1h 55m
2026-07-13 TAY2MN LIS → CDG Jul 13, 19:00 UTCJul 13, 20:55 UTC1h 55m
2026-07-13 TAY2MN - Jul 13, 16:50 UTCJul 13, 17:40 UTC50m
2026-07-13 TAY1MN - Jul 13, 05:10 UTCJul 13, 06:01 UTC50m
2026-07-13 TAY1MN - Jul 13, 01:30 UTCJul 13, 03:45 UTC2h 15m
2026-07-12 FDX4774 - Jul 12, 07:15 UTCJul 12, 10:30 UTC3h 15m
2026-07-11 FDX4624 - Jul 11, 03:40 UTCJul 11, 06:30 UTC2h 50m
2026-07-10 FDX4774 - Jul 10, 19:45 UTCJul 10, 23:15 UTC3h 30m
2026-07-10 FDX4648 - Jul 10, 02:10 UTCJul 10, 04:50 UTC2h 40m
2026-07-09 TAY9SL - Jul 9, 21:05 UTCJul 9, 21:40 UTC35m
2026-07-09 TAY8SL - Jul 9, 02:20 UTCJul 9, 03:10 UTC50m
2026-07-08 TAY9VL - Jul 8, 21:00 UTCJul 8, 22:35 UTC1h 35m
2026-07-08 TAY9VL - Jul 8, 19:00 UTCJul 8, 19:35 UTC35m
2026-07-08 TAY8VC - Jul 8, 05:30 UTCJul 8, 06:10 UTC40m
2026-07-08 TAY8VC - Jul 8, 03:20 UTCJul 8, 04:25 UTC1h 5m
2026-07-07 TAY4RQ NUE → BRQ Jul 7, 20:40 UTCJul 7, 22:20 UTC1h 40m
2026-07-07 TAY3RQ PRG → BRQ Jul 7, 05:05 UTCJul 7, 05:30 UTC25m
2026-07-07 TAY3RQ CDG → PRG Jul 7, 02:50 UTCJul 7, 04:05 UTC1h 15m
2026-07-06 TAY7VC - Jul 6, 20:35 UTCJul 6, 22:00 UTC1h 25m
2026-07-06 TAY7VC - Jul 6, 17:25 UTCJul 6, 19:05 UTC1h 40m
2026-07-05 TAY7FO - Jul 5, 20:45 UTCJul 5, 21:45 UTC1h 0m
2026-07-05 TAY7FO - Jul 5, 17:55 UTCJul 5, 19:25 UTC1h 30m
2026-07-03 TAY1LA - Jul 3, 20:50 UTCJul 3, 21:40 UTC50m
2026-07-03 TAY1LA MLA → FRA Jul 3, 17:05 UTCJul 3, 19:35 UTC2h 30m
2026-07-03 TAY7FO - Jul 3, 05:10 UTCJul 3, 06:10 UTC1h 0m
2026-07-03 TAY7FO - Jul 3, 02:30 UTCJul 3, 04:00 UTC1h 30m
2026-07-02 TAY7VC VCE → CDG Jul 2, 21:00 UTCJul 2, 22:15 UTC1h 15m
2026-07-02 TAY7VC MLA → VCE Jul 2, 17:25 UTCJul 2, 18:55 UTC1h 30m
2026-07-02 TAY7FO - Jul 2, 06:35 UTCJul 2, 07:40 UTC1h 5m
2026-07-02 TAY7FO CDG → FCO Jul 2, 02:25 UTCJul 2, 04:20 UTC1h 55m
2026-07-01 TAY7VC - Jul 1, 20:35 UTCJul 1, 21:55 UTC1h 20m
2026-07-01 TAY7VC MLA → VCE Jul 1, 17:20 UTCJul 1, 19:00 UTC1h 40m
2026-07-01 TAY7FO - Jul 1, 05:10 UTCJul 1, 06:15 UTC1h 5m
2026-07-01 TAY7FO CDG → FCO Jul 1, 02:20 UTCJul 1, 03:50 UTC1h 30m
2026-06-30 TAY7VC VCE → CDG Jun 30, 20:35 UTCJun 30, 22:05 UTC1h 30m
2026-06-30 TAY4702 VCE → CDG Jun 30, 17:25 UTCJun 30, 19:00 UTC1h 35m
2026-06-30 TAY7FO - Jun 30, 05:05 UTCJun 30, 06:05 UTC1h 0m
2026-06-30 TAY7FO - Jun 30, 02:15 UTCJun 30, 03:45 UTC1h 30m
2026-06-29 TAY4RQ NUE → BRQ Jun 29, 19:35 UTCJun 29, 21:05 UTC1h 30m
2026-06-28 TAY2RQ KTW → BRQ Jun 28, 21:30 UTCJun 28, 21:59 UTC30m
2026-06-28 TAY2RQ - Jun 28, 18:59 UTCJun 28, 20:39 UTC1h 40m
2026-06-23 TAY7VC VCE → CDG Jun 23, 20:29 UTCJun 23, 21:59 UTC1h 30m
2026-06-23 TAY7VC MLA → VCE Jun 23, 17:25 UTCJun 23, 18:55 UTC1h 30m
2026-06-23 TAY7FO - Jun 23, 05:15 UTCJun 23, 06:19 UTC1h 5m
2026-06-23 TAY7FO - Jun 23, 02:09 UTCJun 23, 03:54 UTC1h 45m
2026-06-22 TAY7VC - Jun 22, 20:34 UTCJun 22, 21:59 UTC1h 25m
2026-06-22 TAY4702 VCE → CDG Jun 22, 17:15 UTCJun 22, 18:54 UTC1h 40m
2026-06-21 TAY7FO - Jun 21, 21:34 UTCJun 21, 22:34 UTC1h 0m
2026-06-21 TAY7FO - Jun 21, 18:50 UTCJun 21, 20:14 UTC1h 25m
2026-06-21 TAY7FO - Jun 21, 16:14 UTCJun 21, 16:59 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-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 4h 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 TAY7FO, TAY7VC, TAY2MN, TAY1MN, TAY4RQ.