Apparatus

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sensors Mode-S transponder

4B449C

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-ZZO

Hex
4B449C
Octal
22642234
Decimal
4,932,764
Country
CH
Tail
HB-ZZO
Type
AS50
No current signal · last broadcast 6d ago
Flights observed
50
Distinct callsigns
1
Country
CH
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 4B449C.

Country allocation

The ICAO 24-bit address 4B449C 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
HBZZO - 50 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HBZZO - Jul 17, 11:50 UTCJul 17, 13:50 UTC2h 0m
2026-07-16 HBZZO - Jul 16, 14:50 UTCJul 16, 16:15 UTC1h 25m
2026-07-09 HBZZO - Jul 9, 08:40 UTCJul 9, 11:50 UTC3h 10m
2026-07-08 HBZZO - Jul 8, 11:55 UTCJul 8, 12:50 UTC55m
2026-07-07 HBZZO - Jul 7, 11:20 UTCJul 7, 11:45 UTC25m
2026-07-03 HBZZO - Jul 3, 06:40 UTCJul 3, 06:55 UTC15m
2026-07-02 HBZZO - Jul 2, 06:20 UTCJul 2, 07:05 UTC45m
2026-06-26 HBZZO - Jun 26, 11:49 UTCJun 26, 12:55 UTC1h 5m
2026-06-25 HBZZO - Jun 25, 10:45 UTCJun 25, 10:59 UTC15m
2026-06-25 HBZZO - Jun 25, 06:40 UTCJun 25, 07:49 UTC1h 10m
2026-06-24 HBZZO - Jun 24, 14:45 UTCJun 24, 16:14 UTC1h 30m
2026-06-24 HBZZO - Jun 24, 06:04 UTCJun 24, 06:25 UTC20m
2026-06-23 HBZZO - Jun 23, 15:09 UTCJun 23, 16:05 UTC55m
2026-06-23 HBZZO - Jun 23, 08:20 UTCJun 23, 10:49 UTC2h 30m
2026-06-22 HBZZO - Jun 22, 09:54 UTCJun 22, 10:05 UTC10m
2026-06-22 HBZZO - Jun 22, 08:35 UTCJun 22, 08:44 UTC10m
2026-06-20 HBZZO - Jun 20, 10:55 UTCJun 20, 11:40 UTC45m
2026-06-20 HBZZO - Jun 20, 08:55 UTCJun 20, 09:19 UTC25m
2026-06-20 HBZZO - Jun 20, 07:34 UTCJun 20, 08:14 UTC40m
2026-06-20 HBZZO - Jun 20, 06:45 UTCJun 20, 07:00 UTC15m
2026-06-20 HBZZO - Jun 20, 05:49 UTCJun 20, 06:10 UTC20m
2026-06-18 HBZZO - Jun 18, 11:30 UTCJun 18, 12:50 UTC1h 20m
2026-06-18 HBZZO - Jun 18, 09:45 UTCJun 18, 10:00 UTC15m
2026-06-18 HBZZO - Jun 18, 07:05 UTCJun 18, 07:55 UTC50m
2026-06-18 HBZZO - Jun 18, 05:30 UTCJun 18, 05:50 UTC20m
2026-06-17 HBZZO - Jun 17, 13:30 UTCJun 17, 13:55 UTC25m
2026-06-17 HBZZO - Jun 17, 08:35 UTCJun 17, 09:05 UTC30m
2026-06-16 HBZZO - Jun 16, 17:24 UTCJun 16, 17:49 UTC25m
2026-06-16 HBZZO - Jun 16, 16:20 UTCJun 16, 16:45 UTC25m
2026-06-16 HBZZO - Jun 16, 13:09 UTCJun 16, 14:30 UTC1h 20m
2026-06-12 HBZZO - Jun 12, 13:30 UTCJun 12, 14:45 UTC1h 15m
2026-06-09 HBZZO - Jun 9, 09:00 UTCJun 9, 11:20 UTC2h 20m
2026-06-09 HBZZO - Jun 9, 07:00 UTCJun 9, 08:25 UTC1h 25m
2026-06-01 HBZZO - Jun 1, 07:15 UTCJun 1, 09:55 UTC2h 40m
2026-05-30 HBZZO - May 30, 16:20 UTCMay 30, 16:55 UTC35m
2026-05-30 HBZZO - May 30, 11:10 UTCMay 30, 11:50 UTC40m
2026-05-26 HBZZO - May 26, 12:40 UTCMay 26, 12:50 UTC10m
2026-05-26 HBZZO - May 26, 11:05 UTCMay 26, 11:20 UTC15m
2026-05-26 HBZZO - May 26, 09:55 UTCMay 26, 10:20 UTC25m
2026-05-25 HBZZO - May 25, 12:05 UTCMay 25, 12:25 UTC20m
2026-05-12 HBZZO - May 12, 11:15 UTCMay 12, 12:10 UTC55m
2026-05-12 HBZZO - May 12, 09:15 UTCMay 12, 10:05 UTC50m
2026-05-12 HBZZO - May 12, 08:10 UTCMay 12, 08:40 UTC30m
2026-05-04 HBZZO - May 4, 07:25 UTCMay 4, 09:35 UTC2h 10m
2026-05-02 HBZZO - May 2, 07:45 UTCMay 2, 08:10 UTC25m
2026-04-24 HBZZO - Apr 24, 12:55 UTCApr 24, 13:25 UTC30m
2026-04-22 HBZZO - Apr 22, 13:00 UTCApr 22, 13:55 UTC55m
2026-04-22 HBZZO - Apr 22, 12:00 UTCApr 22, 12:25 UTC25m
2026-04-16 HBZZO - Apr 16, 08:40 UTCApr 16, 09:05 UTC25m
2026-04-14 HBZZO - Apr 14, 15:10 UTCApr 14, 16:15 UTC1h 5m

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

Mode-S 4B449C frequently asked

What is Mode-S code 4B449C?
4B449C is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-ZZO.
Where is Mode-S 4B449C registered?
Mode-S code 4B449C is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B449C broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B449C, octal 22642234, decimal 4,932,764.
What flights does 4B449C operate?
Mode-S 4B449C has broadcast 1 distinct callsign, including HBZZO.