Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4A68A6

ICAO 24-bit transponder address · allocated to Romania

Hex
4A68A6
Octal
22464246
Decimal
4,876,454
Country
RO
No current signal · last broadcast 14h ago
Flights observed
90
Distinct callsigns
1
Country
RO
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4A68A6.

Country allocation

The ICAO 24-bit address 4A68A6 falls within the block assigned to Romania (RO) by ICAO Annex 10, Volume III. Every aircraft registered in Romania 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
YRZEF - 90 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 YRZEF - Jul 13, 08:30 UTCJul 13, 08:55 UTC25m
2026-07-12 YRZEF - Jul 12, 11:40 UTCJul 12, 11:45 UTC5m
2026-07-11 YRZEF - Jul 11, 11:20 UTCJul 11, 12:20 UTC1h 0m
2026-07-11 YRZEF - Jul 11, 09:40 UTCJul 11, 10:10 UTC30m
2026-07-11 YRZEF - Jul 11, 08:45 UTCJul 11, 09:15 UTC30m
2026-07-11 YRZEF - Jul 11, 07:30 UTCJul 11, 08:01 UTC30m
2026-07-11 YRZEF - Jul 11, 07:20 UTCJul 11, 07:25 UTC5m
2026-07-10 YRZEF - Jul 10, 12:25 UTCJul 10, 13:00 UTC35m
2026-07-10 YRZEF - Jul 10, 12:10 UTCJul 10, 12:20 UTC10m
2026-07-10 YRZEF - Jul 10, 10:25 UTCJul 10, 11:10 UTC45m
2026-07-10 YRZEF - Jul 10, 07:25 UTCJul 10, 08:05 UTC40m
2026-07-10 YRZEF - Jul 10, 07:05 UTCJul 10, 07:20 UTC15m
2026-07-09 YRZEF - Jul 9, 13:15 UTCJul 9, 13:35 UTC20m
2026-07-09 YRZEF - Jul 9, 12:20 UTCJul 9, 13:10 UTC50m
2026-07-09 YRZEF - Jul 9, 10:20 UTCJul 9, 11:55 UTC1h 35m
2026-07-09 YRZEF - Jul 9, 09:10 UTCJul 9, 10:00 UTC50m
2026-07-08 YRZEF - Jul 8, 11:10 UTCJul 8, 12:25 UTC1h 15m
2026-07-08 YRZEF - Jul 8, 09:40 UTCJul 8, 10:35 UTC55m
2026-07-03 YRZEF - Jul 3, 08:20 UTCJul 3, 09:45 UTC1h 25m
2026-07-03 YRZEF - Jul 3, 07:20 UTCJul 3, 07:35 UTC15m
2026-07-02 YRZEF - Jul 2, 07:15 UTCJul 2, 08:15 UTC1h 0m
2026-07-01 YRZEF - Jul 1, 08:45 UTCJul 1, 09:35 UTC50m
2026-06-28 YRZEF - Jun 28, 09:34 UTCJun 28, 10:10 UTC35m
2026-06-28 YRZEF - Jun 28, 07:05 UTCJun 28, 08:29 UTC1h 25m
2026-06-27 YRZEF - Jun 27, 09:09 UTCJun 27, 09:55 UTC45m
2026-06-26 YRZEF - Jun 26, 18:34 UTCJun 26, 19:20 UTC45m
2026-06-26 YRZEF - Jun 26, 14:25 UTCJun 26, 14:55 UTC30m
2026-06-26 YRZEF - Jun 26, 12:29 UTCJun 26, 13:24 UTC55m
2026-06-26 YRZEF - Jun 26, 09:55 UTCJun 26, 10:15 UTC20m
2026-06-26 YRZEF - Jun 26, 09:14 UTCJun 26, 09:45 UTC30m
2026-06-26 YRZEF - Jun 26, 07:39 UTCJun 26, 08:24 UTC45m
2026-06-25 YRZEF - Jun 25, 09:34 UTCJun 25, 09:40 UTC5m
2026-06-25 YRZEF - Jun 25, 09:05 UTCJun 25, 09:29 UTC25m
2026-06-24 YRZEF - Jun 24, 14:04 UTCJun 24, 14:39 UTC35m
2026-06-24 YRZEF - Jun 24, 13:10 UTCJun 24, 13:24 UTC15m
2026-06-24 YRZEF - Jun 24, 08:30 UTCJun 24, 09:24 UTC55m
2026-06-24 YRZEF - Jun 24, 07:40 UTCJun 24, 08:09 UTC30m
2026-06-21 YRZEF - Jun 21, 11:55 UTCJun 21, 12:44 UTC50m
2026-06-21 YRZEF - Jun 21, 08:10 UTCJun 21, 09:00 UTC50m
2026-06-20 YRZEF - Jun 20, 14:14 UTCJun 20, 14:59 UTC45m
2026-06-20 YRZEF - Jun 20, 08:59 UTCJun 20, 09:24 UTC25m
2026-06-19 YRZEF - Jun 19, 10:29 UTCJun 19, 11:14 UTC45m
2026-06-19 YRZEF - Jun 19, 07:09 UTCJun 19, 07:49 UTC40m
2026-06-18 YRZEF - Jun 18, 14:10 UTCJun 18, 14:55 UTC45m
2026-06-18 YRZEF - Jun 18, 12:10 UTCJun 18, 12:35 UTC25m
2026-06-18 YRZEF - Jun 18, 10:00 UTCJun 18, 11:35 UTC1h 35m
2026-06-17 YRZEF - Jun 17, 14:25 UTCJun 17, 15:00 UTC35m
2026-06-17 YRZEF - Jun 17, 13:25 UTCJun 17, 14:05 UTC40m
2026-06-17 YRZEF - Jun 17, 11:55 UTCJun 17, 12:55 UTC1h 0m
2026-06-17 YRZEF - Jun 17, 11:10 UTCJun 17, 11:20 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 4A68A6 frequently asked

What is Mode-S code 4A68A6?
4A68A6 is an ICAO 24-bit transponder address. Allocated to Romania.
Where is Mode-S 4A68A6 registered?
Mode-S code 4A68A6 is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A68A6 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A68A6, octal 22464246, decimal 4,876,454.
What flights does 4A68A6 operate?
Mode-S 4A68A6 has broadcast 1 distinct callsign, including YRZEF.