Apparatus

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sensors Mode-S transponder

4688C1

ICAO 24-bit transponder address · allocated to Greece

Hex
4688C1
Octal
21504301
Decimal
4,622,529
Country
GR
No current signal · last broadcast 4d ago
Flights observed
42
Distinct callsigns
1
Country
GR
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 4688C1.

Country allocation

The ICAO 24-bit address 4688C1 falls within the block assigned to Greece (GR) by ICAO Annex 10, Volume III. Every aircraft registered in Greece 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
SXBFA - 42 2026-06-18

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-06-18 SXBFA - Jun 18, 06:20 UTCJun 18, 08:25 UTC2h 5m
2026-06-17 SXBFA - Jun 17, 12:55 UTCJun 17, 13:15 UTC20m
2026-06-17 SXBFA - Jun 17, 11:10 UTCJun 17, 11:45 UTC35m
2026-06-17 SXBFA - Jun 17, 09:15 UTCJun 17, 09:50 UTC35m
2026-06-17 SXBFA - Jun 17, 06:15 UTCJun 17, 06:55 UTC40m
2026-06-16 SXBFA - Jun 16, 12:10 UTCJun 16, 13:04 UTC55m
2026-06-16 SXBFA - Jun 16, 11:05 UTCJun 16, 11:25 UTC20m
2026-06-16 SXBFA - Jun 16, 07:45 UTCJun 16, 09:25 UTC1h 40m
2026-06-16 SXBFA - Jun 16, 06:35 UTCJun 16, 07:05 UTC30m
2026-06-15 SXBFA - Jun 15, 07:45 UTCJun 15, 10:09 UTC2h 25m
2026-06-11 SXBFA - Jun 11, 12:55 UTCJun 11, 13:10 UTC15m
2026-06-11 SXBFA - Jun 11, 10:45 UTCJun 11, 11:05 UTC20m
2026-06-11 SXBFA - Jun 11, 06:20 UTCJun 11, 08:45 UTC2h 25m
2026-06-10 SXBFA - Jun 10, 12:25 UTCJun 10, 13:15 UTC50m
2026-06-10 SXBFA - Jun 10, 10:50 UTCJun 10, 11:25 UTC35m
2026-06-10 SXBFA - Jun 10, 08:10 UTCJun 10, 09:40 UTC1h 30m
2026-06-10 SXBFA - Jun 10, 06:25 UTCJun 10, 06:35 UTC10m
2026-06-09 SXBFA - Jun 9, 09:55 UTCJun 9, 12:50 UTC2h 55m
2026-06-08 SXBFA - Jun 8, 11:00 UTCJun 8, 13:05 UTC2h 5m
2026-06-08 SXBFA - Jun 8, 08:55 UTCJun 8, 09:15 UTC20m
2026-06-08 SXBFA - Jun 8, 06:35 UTCJun 8, 06:50 UTC15m
2026-05-29 SXBFA - May 29, 06:20 UTCMay 29, 07:55 UTC1h 35m
2026-05-28 SXBFA - May 28, 10:55 UTCMay 28, 13:10 UTC2h 15m
2026-05-28 SXBFA - May 28, 06:40 UTCMay 28, 06:50 UTC10m
2026-05-27 SXBFA - May 27, 08:05 UTCMay 27, 09:45 UTC1h 40m
2026-05-26 SXBFA - May 26, 11:30 UTCMay 26, 13:10 UTC1h 40m
2026-05-26 SXBFA - May 26, 08:59 UTCMay 26, 10:10 UTC1h 10m
2026-05-22 SXBFA - May 22, 10:10 UTCMay 22, 10:25 UTC15m
2026-05-22 SXBFA - May 22, 07:45 UTCMay 22, 08:00 UTC15m
2026-05-20 SXBFA - May 20, 12:25 UTCMay 20, 13:05 UTC40m
2026-05-20 SXBFA - May 20, 11:00 UTCMay 20, 11:30 UTC30m
2026-05-20 SXBFA - May 20, 09:25 UTCMay 20, 09:45 UTC20m
2026-05-20 SXBFA - May 20, 08:35 UTCMay 20, 08:45 UTC10m
2026-05-20 SXBFA - May 20, 06:40 UTCMay 20, 07:25 UTC45m
2026-05-19 SXBFA - May 19, 11:50 UTCMay 19, 13:35 UTC1h 45m
2026-05-19 SXBFA - May 19, 06:50 UTCMay 19, 09:40 UTC2h 50m
2026-05-18 SXBFA - May 18, 06:50 UTCMay 18, 08:35 UTC1h 45m
2026-05-08 SXBFA - May 8, 10:54 UTCMay 8, 12:25 UTC1h 30m
2026-05-07 SXBFA - May 7, 11:05 UTCMay 7, 13:30 UTC2h 25m
2026-05-05 SXBFA - May 5, 07:25 UTCMay 5, 08:10 UTC45m
2026-05-05 SXBFA - May 5, 06:30 UTCMay 5, 06:45 UTC15m
2026-04-20 SXBFA - Apr 20, 09:15 UTCApr 20, 10:25 UTC1h 10m

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 4688C1 frequently asked

What is Mode-S code 4688C1?
4688C1 is an ICAO 24-bit transponder address. Allocated to Greece.
Where is Mode-S 4688C1 registered?
Mode-S code 4688C1 is allocated to Greece (GR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4688C1 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4688C1, octal 21504301, decimal 4,622,529.
What flights does 4688C1 operate?
Mode-S 4688C1 has broadcast 1 distinct callsign, including SXBFA.