Apparatus

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sensors Mode-S transponder

4B3D25

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-XEB · AEROSPATIALE AS-350 Ecureuil

Hex
4B3D25
Octal
22636445
Decimal
4,930,853
Country
CH
Tail
HB-XEB
Type
AS50
No current signal · last broadcast 18d ago
Flights observed
78
Distinct callsigns
1
Country
CH
Last broadcast
18d ago

Last known position

Most recent position reported by Mode-S 4B3D25.

Country allocation

The ICAO 24-bit address 4B3D25 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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
HBXEB - 78 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HBXEB - Jul 26, 18:35 UTCJul 26, 18:55 UTC20m
2026-07-26 HBXEB - Jul 26, 17:35 UTCJul 26, 17:45 UTC10m
2026-07-26 HBXEB - Jul 26, 12:15 UTCJul 26, 12:30 UTC15m
2026-07-26 HBXEB - Jul 26, 11:00 UTCJul 26, 11:05 UTC5m
2026-07-26 HBXEB - Jul 26, 06:55 UTCJul 26, 07:05 UTC10m
2026-07-25 HBXEB - Jul 25, 11:15 UTCJul 25, 11:35 UTC20m
2026-07-23 HBXEB - Jul 23, 08:55 UTCJul 23, 09:05 UTC10m
2026-07-23 HBXEB - Jul 23, 08:00 UTCJul 23, 08:10 UTC10m
2026-07-21 HBXEB - Jul 21, 18:45 UTCJul 21, 19:00 UTC15m
2026-07-21 HBXEB - Jul 21, 12:10 UTCJul 21, 12:20 UTC10m
2026-07-20 HBXEB - Jul 20, 16:15 UTCJul 20, 16:30 UTC15m
2026-07-20 HBXEB - Jul 20, 14:55 UTCJul 20, 15:10 UTC15m
2026-07-20 HBXEB - Jul 20, 12:20 UTCJul 20, 13:45 UTC1h 25m
2026-07-20 HBXEB - Jul 20, 09:05 UTCJul 20, 09:30 UTC25m
2026-07-20 HBXEB - Jul 20, 07:55 UTCJul 20, 08:25 UTC30m
2026-07-17 HBXEB - Jul 17, 17:55 UTCJul 17, 18:15 UTC20m
2026-07-17 HBXEB - Jul 17, 16:55 UTCJul 17, 17:09 UTC15m
2026-07-17 HBXEB - Jul 17, 07:20 UTCJul 17, 07:35 UTC15m
2026-07-17 HBXEB - Jul 17, 06:29 UTCJul 17, 06:45 UTC15m
2026-07-13 HBXEB - Jul 13, 12:10 UTCJul 13, 12:20 UTC10m
2026-07-13 HBXEB - Jul 13, 07:10 UTCJul 13, 08:01 UTC50m
2026-07-11 HBXEB - Jul 11, 12:40 UTCJul 11, 13:40 UTC1h 0m
2026-07-11 HBXEB - Jul 11, 08:30 UTCJul 11, 08:50 UTC20m
2026-07-01 HBXEB - Jul 1, 11:05 UTCJul 1, 11:45 UTC40m
2026-06-30 HBXEB - Jun 30, 13:35 UTCJun 30, 14:10 UTC35m
2026-06-23 HBXEB - Jun 23, 08:54 UTCJun 23, 09:05 UTC10m
2026-06-23 HBXEB - Jun 23, 07:55 UTCJun 23, 08:04 UTC10m
2026-06-22 HBXEB - Jun 22, 12:25 UTCJun 22, 12:40 UTC15m
2026-06-22 HBXEB - Jun 22, 07:25 UTCJun 22, 07:45 UTC20m
2026-06-18 HBXEB - Jun 18, 12:10 UTCJun 18, 12:35 UTC25m
2026-06-18 HBXEB - Jun 18, 07:10 UTCJun 18, 07:35 UTC25m
2026-06-17 HBXEB - Jun 17, 15:35 UTCJun 17, 16:00 UTC25m
2026-06-17 HBXEB - Jun 17, 09:45 UTCJun 17, 10:55 UTC1h 10m
2026-06-16 HBXEB - Jun 16, 12:35 UTCJun 16, 12:55 UTC20m
2026-06-16 HBXEB - Jun 16, 07:09 UTCJun 16, 07:25 UTC15m
2026-06-14 HBXEB - Jun 14, 16:30 UTCJun 14, 16:35 UTC5m
2026-06-12 HBXEB - Jun 12, 07:30 UTCJun 12, 08:45 UTC1h 15m
2026-06-11 HBXEB CEQ → CEQ Jun 11, 14:40 UTCJun 11, 14:50 UTC10m
2026-06-11 HBXEB CEQ → CEQ Jun 11, 14:20 UTCJun 11, 14:30 UTC10m
2026-06-11 HBXEB CEQ → CEQ Jun 11, 13:50 UTCJun 11, 14:00 UTC10m
2026-06-11 HBXEB - Jun 11, 13:25 UTCJun 11, 13:35 UTC10m
2026-06-11 HBXEB CEQ → CEQ Jun 11, 11:35 UTCJun 11, 11:45 UTC10m
2026-06-11 HBXEB - Jun 11, 10:30 UTCJun 11, 10:40 UTC10m
2026-06-11 HBXEB - Jun 11, 06:35 UTCJun 11, 06:45 UTC10m
2026-06-10 HBXEB - Jun 10, 16:45 UTCJun 10, 17:20 UTC35m
2026-06-10 HBXEB - Jun 10, 16:15 UTCJun 10, 16:35 UTC20m
2026-06-10 HBXEB - Jun 10, 11:50 UTCJun 10, 12:05 UTC15m
2026-06-10 HBXEB - Jun 10, 10:20 UTCJun 10, 10:30 UTC10m
2026-06-10 HBXEB - Jun 10, 09:20 UTCJun 10, 09:40 UTC20m
2026-06-10 HBXEB - Jun 10, 07:35 UTCJun 10, 08:30 UTC55m

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 HB-XEB page for operator, model, and routing details .

Mode-S 4B3D25 frequently asked

What is Mode-S code 4B3D25?
4B3D25 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-XEB.
Where is Mode-S 4B3D25 registered?
Mode-S code 4B3D25 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B3D25 broadcasting right now?
No active broadcast right now. Last signal was 18d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B3D25, octal 22636445, decimal 4,930,853.
What flights does 4B3D25 operate?
Mode-S 4B3D25 has broadcast 1 distinct callsign, including HBXEB.