Apparatus

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sensors Mode-S transponder

440C1B

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IXE · BOEING 737-800

Hex
440C1B
Octal
21006033
Decimal
4,459,547
Country
AT
Tail
OE-IXE
Type
B738
No current signal · last broadcast 3h ago
Flights observed
100
Distinct callsigns
20
Country
AT
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 440C1B.

Country allocation

The ICAO 24-bit address 440C1B 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
TAY6SF ASL Airlines Belgium 9 2026-04-16
TAY8SR - 8 2026-05-28
TAY2ST - 8 2026-05-22
TAY3SF - 7 2026-04-16
TAY7SR ASL Airlines Belgium 6 2026-05-28
TAY2RQ - 6 2026-05-03
TAY1ST - 6 2026-05-22
TAY1KU - 6 2026-05-07
TAY5VA ASL Airlines Belgium 4 2026-04-28
TAY4RQ ASL Airlines Belgium 4 2026-04-27
TAY3RQ ASL Airlines Belgium 4 2026-04-17
TAY1VQ - 4 2026-05-29
TAY9MS ASL Airlines Belgium 3 2026-04-24
TAY2KU - 3 2026-05-07
TAY1MS - 3 2026-04-24
TAY9VC - 2 2026-05-11
TAY9SL ASL Airlines Belgium 2 2026-05-27
TAY8SL ASL Airlines Belgium 2 2026-05-27
TAY8IT - 2 2026-05-10
TAY5AD ASL Airlines Belgium 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAY5AD MAD → CDG May 29, 21:05 UTCMay 29, 22:35 UTC1h 30m
2026-05-29 TAY5AD MAD → CDG May 29, 18:20 UTCMay 29, 19:00 UTC40m
2026-05-29 TAY1VQ - May 29, 06:05 UTCMay 29, 06:50 UTC45m
2026-05-29 TAY1VQ - May 29, 02:05 UTCMay 29, 04:00 UTC1h 55m
2026-05-28 TAY8SR MUC → LGG May 28, 21:20 UTCMay 28, 22:15 UTC55m
2026-05-28 TAY8SR - May 28, 18:40 UTCMay 28, 20:00 UTC1h 20m
2026-05-28 TAY7SR TSR → LGG May 28, 04:25 UTCMay 28, 05:30 UTC1h 5m
2026-05-28 TAY7SR TSR → LGG May 28, 02:10 UTCMay 28, 03:10 UTC1h 0m
2026-05-27 TAY2GG - May 27, 23:00 UTCMay 27, 23:40 UTC40m
2026-05-27 TAY9SL HAJ → OSL May 27, 21:00 UTCMay 27, 21:45 UTC45m
2026-05-27 TAY8SL CDG → OSL May 27, 02:29 UTCMay 27, 03:14 UTC45m
2026-05-22 TAY2ST CDG → LGG May 22, 23:55 UTCMay 23, 00:25 UTC30m
2026-05-22 TAY2ST - May 22, 21:45 UTCMay 22, 22:25 UTC40m
2026-05-22 TAY1ST - May 22, 02:00 UTCMay 22, 02:45 UTC45m
2026-05-21 TAY9SL HAJ → OSL May 21, 20:50 UTCMay 21, 21:30 UTC40m
2026-05-21 TAY8SL CDG → OSL May 21, 02:20 UTCMay 21, 03:00 UTC40m
2026-05-20 TAY8SR - May 20, 21:25 UTCMay 20, 22:20 UTC55m
2026-05-20 TAY8SR - May 20, 18:45 UTCMay 20, 20:00 UTC1h 15m
2026-05-20 TAY7SR TSR → LGG May 20, 04:40 UTCMay 20, 05:40 UTC1h 0m
2026-05-20 TAY7SR TSR → LGG May 20, 02:15 UTCMay 20, 03:25 UTC1h 10m
2026-05-19 TAY2VQ VIT → CDG May 19, 20:25 UTCMay 19, 21:45 UTC1h 20m
2026-05-19 TAY2VQ VIT → CDG May 19, 18:10 UTCMay 19, 19:05 UTC55m
2026-05-19 TAY1VQ MAD → SVQ May 19, 05:55 UTCMay 19, 06:35 UTC40m
2026-05-19 TAY1VQ - May 19, 02:05 UTCMay 19, 04:00 UTC1h 55m
2026-05-18 TAY2ST - May 18, 21:55 UTCMay 18, 22:35 UTC40m
2026-05-16 TAY1ST - May 16, 20:15 UTCMay 16, 20:55 UTC40m
2026-05-15 TAY2ST - May 15, 21:45 UTCMay 15, 22:35 UTC50m
2026-05-15 TAY1ST - May 15, 02:00 UTCMay 15, 02:45 UTC45m
2026-05-14 TAY2ST - May 14, 21:45 UTCMay 14, 22:30 UTC45m
2026-05-14 TAY1ST - May 14, 02:00 UTCMay 14, 02:45 UTC45m
2026-05-13 TAY2ST - May 13, 21:50 UTCMay 13, 22:30 UTC40m
2026-05-13 TAY1ST - May 13, 03:35 UTCMay 13, 04:20 UTC45m
2026-05-12 TAY2ST - May 12, 21:50 UTCMay 12, 22:31 UTC40m
2026-05-11 TAY9VC - May 11, 20:55 UTCMay 11, 22:35 UTC1h 39m
2026-05-11 TAY9VC - May 11, 18:55 UTCMay 11, 19:35 UTC40m
2026-05-10 TAY8IT - May 10, 18:20 UTCMay 10, 19:09 UTC50m
2026-05-10 TAY8IT - May 10, 15:39 UTCMay 10, 16:50 UTC1h 10m
2026-05-07 TAY2KU - May 7, 18:55 UTCMay 7, 21:25 UTC2h 30m
2026-05-07 TAY1KU - May 7, 05:05 UTCMay 7, 05:55 UTC50m
2026-05-07 TAY1KU - May 7, 02:30 UTCMay 7, 04:05 UTC1h 35m
2026-05-06 TAY2KU - May 6, 18:55 UTCMay 6, 21:25 UTC2h 30m
2026-05-06 TAY1KU - May 6, 05:05 UTCMay 6, 06:00 UTC55m
2026-05-06 TAY1KU - May 6, 02:35 UTCMay 6, 04:10 UTC1h 35m
2026-05-05 TAY2KU - May 5, 18:55 UTCMay 5, 21:35 UTC2h 40m
2026-05-05 TAY1KU - May 5, 05:15 UTCMay 5, 06:05 UTC50m
2026-05-05 TAY1KU - May 5, 02:30 UTCMay 5, 04:05 UTC1h 35m
2026-05-04 TAY8SR MUC → CDG May 4, 21:25 UTCMay 4, 22:40 UTC1h 15m
2026-05-04 TAY8SR BRQ → MUC May 4, 19:35 UTCMay 4, 20:25 UTC50m
2026-05-03 TAY2RQ - May 3, 21:44 UTCMay 3, 22:09 UTC25m
2026-05-03 TAY2RQ - May 3, 18:50 UTCMay 3, 20:30 UTC1h 40m

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

Mode-S 440C1B frequently asked

What is Mode-S code 440C1B?
440C1B is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IXE.
Where is Mode-S 440C1B registered?
Mode-S code 440C1B is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440C1B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440C1B, octal 21006033, decimal 4,459,547.
What flights does 440C1B operate?
Mode-S 440C1B has broadcast 20 distinct callsigns, including TAY6SF, TAY8SR, TAY2ST, TAY3SF, TAY7SR.