Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4400E1

ICAO 24-bit transponder address · allocated to Austria

Hex
4400E1
Octal
21000341
Decimal
4,456,673
Country
AT
No current signal · last broadcast 23h ago
Flights observed
43
Distinct callsigns
1
Country
AT
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 4400E1.

Country allocation

The ICAO 24-bit address 4400E1 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 1 distinct

Callsign Airline Flights Last seen
OEXBH - 42 2026-06-29

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-06-29 OEXBH - Jun 29, 14:14 UTCJun 29, 14:54 UTC40m
2026-06-29 OEXBH - Jun 29, 12:34 UTCJun 29, 13:00 UTC25m
2026-06-29 OEXBH - Jun 29, 09:05 UTCJun 29, 09:14 UTC10m
2026-06-29 OEXBH - Jun 29, 07:55 UTCJun 29, 08:29 UTC35m
2026-06-27 OEXBH - Jun 27, 13:55 UTCJun 27, 14:29 UTC35m
2026-06-27 OEXBH - Jun 27, 12:50 UTCJun 27, 13:20 UTC30m
2026-06-27 OEXBH - Jun 27, 11:09 UTCJun 27, 12:09 UTC1h 0m
2026-06-24 OEXBH - Jun 24, 07:10 UTCJun 24, 07:59 UTC50m
2026-06-24 OEXBH - Jun 24, 05:15 UTCJun 24, 06:04 UTC50m
2026-06-20 OEXBH - Jun 20, 16:19 UTCJun 20, 17:24 UTC1h 5m
2026-06-19 OEXBH - Jun 19, 09:59 UTCJun 19, 10:54 UTC55m
2026-06-19 OEXBH - Jun 19, 08:20 UTCJun 19, 09:14 UTC55m
2026-06-17 OEXBH - Jun 17, 13:30 UTCJun 17, 15:15 UTC1h 45m
2026-06-17 OEXBH - Jun 17, 10:10 UTCJun 17, 11:55 UTC1h 45m
2026-06-17 OEXBH - Jun 17, 08:55 UTCJun 17, 09:25 UTC30m
2026-06-15 OEXBH - Jun 15, 15:40 UTCJun 15, 15:59 UTC20m
2026-06-15 OEXBH - Jun 15, 13:50 UTCJun 15, 14:05 UTC15m
2026-06-15 OEXBH - Jun 15, 10:15 UTCJun 15, 12:15 UTC2h 0m
2026-06-15 OEXBH - Jun 15, 06:40 UTCJun 15, 06:55 UTC15m
2026-06-09 OEXBH - Jun 9, 10:10 UTCJun 9, 11:10 UTC1h 0m
2026-06-08 OEXBH - Jun 8, 16:10 UTCJun 8, 17:05 UTC55m
2026-06-07 OEXBH - Jun 7, 15:35 UTCJun 7, 17:40 UTC2h 5m
2026-06-07 OEXBH - Jun 7, 10:00 UTCJun 7, 10:45 UTC45m
2026-06-06 OEXBH - Jun 6, 13:09 UTCJun 6, 13:49 UTC40m
2026-06-06 OEXBH - Jun 6, 12:14 UTCJun 6, 12:35 UTC20m
2026-06-05 OEXBH - Jun 5, 15:25 UTCJun 5, 16:05 UTC40m
2026-06-05 OEXBH - Jun 5, 13:40 UTCJun 5, 14:20 UTC40m
2026-06-04 OEXBH - Jun 4, 09:30 UTCJun 4, 10:55 UTC1h 25m
2026-06-04 OEXBH - Jun 4, 07:10 UTCJun 4, 08:05 UTC55m
2026-06-02 OEXBH - Jun 2, 12:35 UTCJun 2, 13:25 UTC50m
2026-06-02 OEXBH - Jun 2, 10:55 UTCJun 2, 11:45 UTC50m
2026-05-30 OEXBH - May 30, 16:20 UTCMay 30, 17:05 UTC45m
2026-05-30 OEXBH - May 30, 15:10 UTCMay 30, 15:45 UTC35m
2026-05-30 OEXBH - May 30, 10:00 UTCMay 30, 10:40 UTC40m
2026-05-30 OEXBH - May 30, 07:30 UTCMay 30, 08:15 UTC45m
2026-05-29 OEXBH - May 29, 14:20 UTCMay 29, 15:00 UTC40m
2026-05-19 OEXBH - May 19, 11:00 UTCMay 19, 11:10 UTC10m
2026-05-18 OEXBH - May 18, 13:35 UTCMay 18, 14:20 UTC45m
2026-05-16 OEXBH - May 16, 09:21 UTCMay 16, 10:05 UTC45m
2026-05-14 OEXBH - May 14, 12:05 UTCMay 14, 12:30 UTC25m
2026-05-14 OEXBH - May 14, 06:55 UTCMay 14, 07:05 UTC10m
2026-05-13 OEXBH - May 13, 16:30 UTCMay 13, 17:35 UTC1h 5m
2026-05-04 - - May 4, 12:35 UTCMay 4, 12:45 UTC10m

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.

Mode-S 4400E1 frequently asked

What is Mode-S code 4400E1?
4400E1 is an ICAO 24-bit transponder address. Allocated to Austria.
Where is Mode-S 4400E1 registered?
Mode-S code 4400E1 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4400E1 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4400E1, octal 21000341, decimal 4,456,673.
What flights does 4400E1 operate?
Mode-S 4400E1 has broadcast 1 distinct callsign, including OEXBH.