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sensors Mode-S transponder

4401E2

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-LEX · AIRBUS A-320

Hex
4401E2
Octal
21000742
Decimal
4,456,930
Country
AT
Tail
OE-LEX
Type
A320
No current signal · last broadcast 6h ago
Flights observed
184
Distinct callsigns
20
Country
AT
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4401E2.

Country allocation

The ICAO 24-bit address 4401E2 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
FDX4648 - 21 2026-07-02
FDX4797 - 16 2026-06-24
TAY1VQ - 10 2026-07-14
TAY8SR - 9 2026-07-08
TAY7SR - 8 2026-07-08
TAY2VQ - 8 2026-07-14
FDX4774 - 7 2026-06-28
FDX4725 - 7 2026-07-02
TAY8LL - 6 2026-07-17
TAY7LL - 6 2026-07-17
TAY6SO - 6 2026-06-12
TAY8VC - 5 2026-07-10
FDX4624 FedEx Express 5 2026-06-27
FDX4610 - 5 2026-05-17
TAY9VL - 4 2026-07-10
TAY6SL ASL Airlines Belgium 4 2026-04-24
TAY5AD - 4 2026-06-19
TAY2MN ASL Airlines Belgium 4 2026-06-09
TAY1MN ASL Airlines Belgium 4 2026-06-09
TAY5SO - 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 TAY8LL - Jul 17, 20:55 UTCJul 17, 22:20 UTC1h 25m
2026-07-17 TAY8LL - Jul 17, 17:35 UTCJul 17, 19:00 UTC1h 25m
2026-07-17 TAY7LL HEL → TLL Jul 17, 05:39 UTCJul 17, 06:00 UTC20m
2026-07-17 TAY7LL CDG → HEL Jul 17, 02:05 UTCJul 17, 04:35 UTC2h 30m
2026-07-16 FDX4678 - Jul 16, 20:45 UTCJul 16, 22:40 UTC1h 55m
2026-07-16 FDX4463 - Jul 16, 02:30 UTCJul 16, 04:25 UTC1h 55m
2026-07-15 FDX4678 - Jul 15, 20:55 UTCJul 15, 22:50 UTC1h 55m
2026-07-15 FDX4463 - Jul 15, 02:25 UTCJul 15, 03:50 UTC1h 25m
2026-07-14 TAY2VQ - Jul 14, 20:30 UTCJul 14, 21:25 UTC55m
2026-07-14 TAY2VQ - Jul 14, 18:15 UTCJul 14, 19:00 UTC45m
2026-07-14 TAY1VQ - Jul 14, 06:10 UTCJul 14, 07:00 UTC50m
2026-07-14 TAY1VQ - Jul 14, 02:00 UTCJul 14, 04:00 UTC2h 0m
2026-07-13 TAY2ST - Jul 13, 21:50 UTCJul 13, 22:30 UTC40m
2026-07-11 TAY1ST - Jul 11, 20:10 UTCJul 11, 20:55 UTC45m
2026-07-10 TAY9VL BCN → CDG Jul 10, 21:30 UTCJul 10, 23:15 UTC1h 45m
2026-07-10 TAY9VL - Jul 10, 18:55 UTCJul 10, 19:30 UTC35m
2026-07-10 TAY8VC - Jul 10, 05:35 UTCJul 10, 06:20 UTC45m
2026-07-10 TAY8VC - Jul 10, 03:05 UTCJul 10, 04:20 UTC1h 15m
2026-07-09 TAY2VQ - Jul 9, 20:30 UTCJul 9, 21:40 UTC1h 10m
2026-07-09 TAY2VQ - Jul 9, 18:10 UTCJul 9, 19:00 UTC50m
2026-07-09 TAY1VQ - Jul 9, 06:15 UTCJul 9, 07:00 UTC45m
2026-07-09 TAY1VQ - Jul 9, 02:00 UTCJul 9, 03:55 UTC1h 55m
2026-07-08 TAY8SR - Jul 8, 21:30 UTCJul 8, 22:20 UTC50m
2026-07-08 TAY8SR - Jul 8, 18:45 UTCJul 8, 20:00 UTC1h 15m
2026-07-08 TAY7SR - Jul 8, 04:45 UTCJul 8, 05:35 UTC50m
2026-07-08 TAY7SR CDG → MUC Jul 8, 02:10 UTCJul 8, 03:25 UTC1h 15m
2026-07-07 TAY1LA - Jul 7, 20:55 UTCJul 7, 22:40 UTC1h 45m
2026-07-07 TAY9VX - Jul 7, 02:15 UTCJul 7, 03:40 UTC1h 25m
2026-07-06 TAY9SL - Jul 6, 21:00 UTCJul 6, 21:45 UTC45m
2026-07-03 TAY8SL - Jul 3, 02:30 UTCJul 3, 03:20 UTC50m
2026-07-02 FDX4725 - Jul 2, 19:45 UTCJul 2, 22:50 UTC3h 5m
2026-07-02 FDX4648 - Jul 2, 02:05 UTCJul 2, 04:50 UTC2h 45m
2026-07-01 TAY9SL - Jul 1, 20:50 UTCJul 1, 21:35 UTC45m
2026-07-01 TAY8SL - Jul 1, 02:20 UTCJul 1, 03:10 UTC50m
2026-06-30 TAY9VL - Jun 30, 21:40 UTCJun 30, 23:25 UTC1h 45m
2026-06-30 TAY9VL - Jun 30, 19:00 UTCJun 30, 19:45 UTC45m
2026-06-30 TAY8VC - Jun 30, 05:35 UTCJun 30, 06:15 UTC40m
2026-06-30 TAY8VC - Jun 30, 03:05 UTCJun 30, 04:20 UTC1h 15m
2026-06-29 TAY1LA - Jun 29, 20:49 UTCJun 29, 22:30 UTC1h 40m
2026-06-28 TAY4605 ATH → FCO Jun 28, 23:54 UTCJun 29, 01:29 UTC1h 35m
2026-06-28 TAY4605 - Jun 28, 18:29 UTCJun 28, 21:24 UTC2h 55m
2026-06-28 FDX4774 - Jun 28, 07:34 UTCJun 28, 10:39 UTC3h 5m
2026-06-27 FDX4624 CDG → SAW Jun 27, 03:40 UTCJun 27, 06:44 UTC3h 5m
2026-06-26 FDX4774 - Jun 26, 19:45 UTCJun 26, 22:49 UTC3h 5m
2026-06-26 FDX4648 - Jun 26, 02:14 UTCJun 26, 05:10 UTC2h 55m
2026-06-25 FDX4725 - Jun 25, 19:49 UTCJun 25, 22:39 UTC2h 50m
2026-06-25 FDX4648 - Jun 25, 01:59 UTCJun 25, 04:54 UTC2h 55m
2026-06-24 FDX4797 - Jun 24, 19:44 UTCJun 24, 22:39 UTC2h 55m
2026-06-24 FDX4648 - Jun 24, 02:09 UTCJun 24, 04:55 UTC2h 45m
2026-06-23 FDX4797 - Jun 23, 19:44 UTCJun 23, 22:40 UTC2h 55m

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

Mode-S 4401E2 frequently asked

What is Mode-S code 4401E2?
4401E2 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-LEX.
Where is Mode-S 4401E2 registered?
Mode-S code 4401E2 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4401E2 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4401E2, octal 21000742, decimal 4,456,930.
What flights does 4401E2 operate?
Mode-S 4401E2 has broadcast 20 distinct callsigns, including FDX4648, FDX4797, TAY1VQ, TAY8SR, TAY7SR.