Apparatus

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sensors Mode-S transponder

440B1F

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-XPH · ROBINSON R-22 Mariner

Hex
440B1F
Octal
21005437
Decimal
4,459,295
Country
AT
Tail
OE-XPH
Type
R22
No current signal · last broadcast 3h ago
Flights observed
142
Distinct callsigns
1
Country
AT
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 440B1F.

Country allocation

The ICAO 24-bit address 440B1F 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
OEXPH - 142 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 OEXPH GRZ → GRZ Jul 14, 07:45 UTCJul 14, 08:35 UTC50m
2026-07-13 OEXPH GRZ → GRZ Jul 13, 09:25 UTCJul 13, 10:25 UTC1h 0m
2026-07-13 OEXPH GRZ → GRZ Jul 13, 08:01 UTCJul 13, 08:45 UTC45m
2026-07-10 OEXPH - Jul 10, 14:30 UTCJul 10, 14:50 UTC20m
2026-07-10 OEXPH - Jul 10, 12:20 UTCJul 10, 12:50 UTC30m
2026-07-10 OEXPH - Jul 10, 09:35 UTCJul 10, 09:55 UTC20m
2026-07-10 OEXPH - Jul 10, 08:05 UTCJul 10, 08:35 UTC30m
2026-07-09 OEXPH - Jul 9, 14:55 UTCJul 9, 15:50 UTC55m
2026-07-09 OEXPH GRZ → GRZ Jul 9, 12:35 UTCJul 9, 13:55 UTC1h 20m
2026-07-09 OEXPH GRZ → GRZ Jul 9, 08:30 UTCJul 9, 09:30 UTC1h 0m
2026-07-09 OEXPH GRZ → GRZ Jul 9, 07:10 UTCJul 9, 08:00 UTC50m
2026-07-08 OEXPH - Jul 8, 09:40 UTCJul 8, 09:50 UTC10m
2026-07-06 OEXPH GRZ → GRZ Jul 6, 09:30 UTCJul 6, 10:30 UTC1h 0m
2026-07-06 OEXPH GRZ → GRZ Jul 6, 08:20 UTCJul 6, 08:45 UTC25m
2026-07-04 OEXPH - Jul 4, 08:15 UTCJul 4, 08:45 UTC30m
2026-07-01 OEXPH - Jul 1, 09:00 UTCJul 1, 09:20 UTC20m
2026-07-01 OEXPH - Jul 1, 07:35 UTCJul 1, 08:05 UTC30m
2026-07-01 OEXPH GRZ → GRZ Jul 1, 06:45 UTCJul 1, 07:00 UTC15m
2026-06-30 OEXPH GRZ → GRZ Jun 30, 08:25 UTCJun 30, 09:30 UTC1h 5m
2026-06-29 OEXPH - Jun 29, 13:04 UTCJun 29, 13:24 UTC20m
2026-06-29 OEXPH - Jun 29, 11:45 UTCJun 29, 12:09 UTC25m
2026-06-29 OEXPH GRZ → GRZ Jun 29, 08:19 UTCJun 29, 09:10 UTC50m
2026-06-26 OEXPH GRZ → GRZ Jun 26, 15:39 UTCJun 26, 16:20 UTC40m
2026-06-25 OEXPH - Jun 25, 12:10 UTCJun 25, 12:44 UTC35m
2026-06-25 OEXPH - Jun 25, 10:50 UTCJun 25, 11:19 UTC30m
2026-06-25 OEXPH - Jun 25, 09:10 UTCJun 25, 09:25 UTC15m
2026-06-25 OEXPH GRZ → GRZ Jun 25, 07:45 UTCJun 25, 08:30 UTC45m
2026-06-24 OEXPH - Jun 24, 10:10 UTCJun 24, 10:35 UTC25m
2026-06-24 OEXPH - Jun 24, 07:30 UTCJun 24, 07:54 UTC25m
2026-06-23 OEXPH - Jun 23, 10:35 UTCJun 23, 10:59 UTC25m
2026-06-23 OEXPH - Jun 23, 08:20 UTCJun 23, 08:50 UTC30m
2026-06-22 OEXPH - Jun 22, 10:25 UTCJun 22, 10:40 UTC15m
2026-06-22 OEXPH GRZ → GRZ Jun 22, 08:19 UTCJun 22, 09:10 UTC50m
2026-06-20 OEXPH - Jun 20, 09:49 UTCJun 20, 10:09 UTC20m
2026-06-19 OEXPH - Jun 19, 10:09 UTCJun 19, 10:35 UTC25m
2026-06-19 OEXPH - Jun 19, 07:39 UTCJun 19, 08:09 UTC30m
2026-06-19 OEXPH GRZ → GRZ Jun 19, 06:04 UTCJun 19, 06:59 UTC55m
2026-06-18 OEXPH - Jun 18, 13:40 UTCJun 18, 14:01 UTC20m
2026-06-18 OEXPH - Jun 18, 11:20 UTCJun 18, 11:50 UTC30m
2026-06-18 OEXPH - Jun 18, 10:25 UTCJun 18, 10:45 UTC20m
2026-06-18 OEXPH - Jun 18, 08:25 UTCJun 18, 08:55 UTC30m
2026-06-18 OEXPH GRZ → GRZ Jun 18, 06:55 UTCJun 18, 07:35 UTC40m
2026-06-17 OEXPH - Jun 17, 10:25 UTCJun 17, 11:00 UTC35m
2026-06-17 OEXPH GRZ → GRZ Jun 17, 08:45 UTCJun 17, 09:20 UTC35m
2026-06-16 OEXPH GRZ → GRZ Jun 16, 14:35 UTCJun 16, 14:45 UTC10m
2026-06-16 OEXPH GRZ → GRZ Jun 16, 11:00 UTCJun 16, 11:25 UTC25m
2026-06-16 OEXPH GRZ → GRZ Jun 16, 08:30 UTCJun 16, 09:15 UTC45m
2026-06-12 OEXPH - Jun 12, 10:10 UTCJun 12, 10:30 UTC20m
2026-06-12 OEXPH GRZ → GRZ Jun 12, 07:25 UTCJun 12, 08:15 UTC50m
2026-06-11 OEXPH GRZ → GRZ Jun 11, 08:20 UTCJun 11, 09:50 UTC1h 30m

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

Mode-S 440B1F frequently asked

What is Mode-S code 440B1F?
440B1F is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-XPH.
Where is Mode-S 440B1F registered?
Mode-S code 440B1F is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440B1F 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 440B1F, octal 21005437, decimal 4,459,295.
What flights does 440B1F operate?
Mode-S 440B1F has broadcast 1 distinct callsign, including OEXPH.