Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

347557

ICAO 24-bit transponder address · allocated to Spain

Hex
347557
Octal
15072527
Decimal
3,437,911
Country
ES
No current signal · last broadcast 16d ago
Flights observed
79
Distinct callsigns
1
Country
ES
Last broadcast
16d ago

Last known position

Most recent position reported by Mode-S 347557.

Country allocation

The ICAO 24-bit address 347557 falls within the block assigned to Spain (ES) by ICAO Annex 10, Volume III. Every aircraft registered in Spain 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
ECOCE - 79 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ECOCE - Jul 26, 15:10 UTCJul 26, 15:20 UTC10m
2026-07-26 ECOCE - Jul 26, 14:00 UTCJul 26, 14:15 UTC15m
2026-07-25 ECOCE - Jul 25, 17:40 UTCJul 25, 17:55 UTC15m
2026-07-25 ECOCE - Jul 25, 16:25 UTCJul 25, 16:35 UTC10m
2026-07-25 ECOCE - Jul 25, 15:15 UTCJul 25, 15:30 UTC15m
2026-07-25 ECOCE - Jul 25, 12:05 UTCJul 25, 13:35 UTC1h 30m
2026-07-25 ECOCE - Jul 25, 09:10 UTCJul 25, 10:35 UTC1h 25m
2026-07-24 ECOCE - Jul 24, 13:55 UTCJul 24, 14:45 UTC50m
2026-07-24 ECOCE - Jul 24, 11:15 UTCJul 24, 11:45 UTC30m
2026-07-24 ECOCE - Jul 24, 07:30 UTCJul 24, 08:40 UTC1h 10m
2026-07-23 ECOCE - Jul 23, 16:50 UTCJul 23, 18:10 UTC1h 20m
2026-07-23 ECOCE - Jul 23, 14:00 UTCJul 23, 14:10 UTC10m
2026-07-23 ECOCE - Jul 23, 11:20 UTCJul 23, 11:50 UTC30m
2026-07-23 ECOCE - Jul 23, 08:15 UTCJul 23, 09:50 UTC1h 35m
2026-07-22 ECOCE - Jul 22, 17:10 UTCJul 22, 17:35 UTC25m
2026-07-22 ECOCE - Jul 22, 14:10 UTCJul 22, 14:45 UTC35m
2026-07-22 ECOCE - Jul 22, 11:25 UTCJul 22, 11:45 UTC20m
2026-07-21 ECOCE - Jul 21, 18:05 UTCJul 21, 18:35 UTC30m
2026-07-21 ECOCE - Jul 21, 17:15 UTCJul 21, 17:25 UTC10m
2026-07-21 ECOCE - Jul 21, 11:25 UTCJul 21, 11:35 UTC10m
2026-07-21 ECOCE - Jul 21, 08:15 UTCJul 21, 08:40 UTC25m
2026-07-20 ECOCE - Jul 20, 17:00 UTCJul 20, 17:15 UTC15m
2026-07-20 ECOCE - Jul 20, 14:10 UTCJul 20, 14:25 UTC15m
2026-07-20 ECOCE - Jul 20, 10:00 UTCJul 20, 11:05 UTC1h 5m
2026-07-20 ECOCE - Jul 20, 08:10 UTCJul 20, 08:30 UTC20m
2026-07-19 ECOCE - Jul 19, 17:05 UTCJul 19, 17:40 UTC35m
2026-07-19 ECOCE - Jul 19, 16:00 UTCJul 19, 16:10 UTC10m
2026-07-19 ECOCE - Jul 19, 13:15 UTCJul 19, 13:25 UTC10m
2026-07-19 ECOCE - Jul 19, 10:05 UTCJul 19, 10:15 UTC10m
2026-07-18 ECOCE - Jul 18, 18:10 UTCJul 18, 18:20 UTC10m
2026-07-18 ECOCE - Jul 18, 15:15 UTCJul 18, 15:25 UTC10m
2026-07-18 ECOCE - Jul 18, 12:30 UTCJul 18, 12:40 UTC10m
2026-07-18 ECOCE - Jul 18, 09:30 UTCJul 18, 09:45 UTC15m
2026-07-17 ECOCE - Jul 17, 15:44 UTCJul 17, 17:30 UTC1h 45m
2026-07-17 ECOCE - Jul 17, 12:45 UTCJul 17, 12:55 UTC10m
2026-07-17 ECOCE - Jul 17, 06:40 UTCJul 17, 07:50 UTC1h 10m
2026-07-16 ECOCE - Jul 16, 15:10 UTCJul 16, 16:00 UTC50m
2026-07-16 ECOCE - Jul 16, 12:14 UTCJul 16, 12:25 UTC10m
2026-07-15 ECOCE - Jul 15, 13:05 UTCJul 15, 13:15 UTC10m
2026-07-15 ECOCE - Jul 15, 11:30 UTCJul 15, 11:40 UTC10m
2026-07-12 ECOCE - Jul 12, 19:15 UTCJul 12, 19:25 UTC10m
2026-07-11 ECOCE - Jul 11, 11:25 UTCJul 11, 11:35 UTC10m
2026-07-10 ECOCE - Jul 10, 16:40 UTCJul 10, 17:25 UTC45m
2026-07-08 ECOCE - Jul 8, 17:50 UTCJul 8, 18:20 UTC30m
2026-07-08 ECOCE - Jul 8, 15:25 UTCJul 8, 16:40 UTC1h 15m
2026-07-07 ECOCE - Jul 7, 13:55 UTCJul 7, 14:15 UTC20m
2026-07-06 ECOCE - Jul 6, 11:45 UTCJul 6, 11:55 UTC10m
2026-07-06 ECOCE - Jul 6, 11:05 UTCJul 6, 11:15 UTC10m
2026-07-05 ECOCE - Jul 5, 11:50 UTCJul 5, 12:25 UTC35m
2026-07-04 ECOCE - Jul 4, 11:45 UTCJul 4, 12:10 UTC25m

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 347557 frequently asked

What is Mode-S code 347557?
347557 is an ICAO 24-bit transponder address. Allocated to Spain.
Where is Mode-S 347557 registered?
Mode-S code 347557 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 347557 broadcasting right now?
No active broadcast right now. Last signal was 16d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 347557, octal 15072527, decimal 3,437,911.
What flights does 347557 operate?
Mode-S 347557 has broadcast 1 distinct callsign, including ECOCE.