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sensors Mode-S transponder

484571

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-HLF · CESSNA 182 Skylane

Hex
484571
Octal
22042561
Decimal
4,736,369
Country
NL
Tail
PH-HLF
Type
C182
No current signal · last broadcast 5d ago
Flights observed
37
Distinct callsigns
1
Country
NL
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S 484571.

Country allocation

The ICAO 24-bit address 484571 falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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
PHHLF - 37 2026-07-26

Recent flights last 37

DateFlightRouteTakeoffLandingDuration
2026-07-26 PHHLF - Jul 26, 12:20 UTCJul 26, 14:15 UTC1h 55m
2026-07-26 PHHLF - Jul 26, 07:20 UTCJul 26, 07:45 UTC25m
2026-07-25 PHHLF - Jul 25, 14:55 UTCJul 25, 16:40 UTC1h 45m
2026-07-25 PHHLF - Jul 25, 13:40 UTCJul 25, 14:20 UTC40m
2026-07-25 PHHLF - Jul 25, 11:05 UTCJul 25, 13:05 UTC2h 0m
2026-07-25 PHHLF - Jul 25, 09:25 UTCJul 25, 10:25 UTC1h 0m
2026-07-25 PHHLF - Jul 25, 08:30 UTCJul 25, 08:55 UTC25m
2026-07-24 PHHLF - Jul 24, 08:55 UTCJul 24, 13:30 UTC4h 35m
2026-07-24 PHHLF - Jul 24, 07:20 UTCJul 24, 08:00 UTC40m
2026-07-18 PHHLF - Jul 18, 12:35 UTCJul 18, 13:00 UTC25m
2026-07-12 PHHLF - Jul 12, 12:50 UTCJul 12, 16:01 UTC3h 10m
2026-07-12 PHHLF - Jul 12, 11:01 UTCJul 12, 11:40 UTC40m
2026-07-12 PHHLF - Jul 12, 09:30 UTCJul 12, 10:20 UTC50m
2026-07-11 PHHLF - Jul 11, 07:55 UTCJul 11, 14:25 UTC6h 30m
2026-07-10 PHHLF - Jul 10, 12:20 UTCJul 10, 16:10 UTC3h 50m
2026-07-09 PHHLF - Jul 9, 15:15 UTCJul 9, 16:20 UTC1h 5m
2026-07-09 PHHLF - Jul 9, 13:35 UTCJul 9, 14:35 UTC1h 0m
2026-07-09 PHHLF - Jul 9, 11:55 UTCJul 9, 12:55 UTC1h 0m
2026-07-01 PHHLF - Jul 1, 14:40 UTCJul 1, 15:00 UTC20m
2026-07-01 PHHLF - Jul 1, 13:10 UTCJul 1, 13:35 UTC25m
2026-07-01 PHHLF - Jul 1, 11:55 UTCJul 1, 12:35 UTC40m
2026-07-01 PHHLF - Jul 1, 10:20 UTCJul 1, 11:15 UTC55m
2026-06-28 PHHLF - Jun 28, 14:14 UTCJun 28, 15:40 UTC1h 25m
2026-06-28 PHHLF - Jun 28, 10:30 UTCJun 28, 11:35 UTC1h 5m
2026-06-27 PHHLF - Jun 27, 13:30 UTCJun 27, 16:20 UTC2h 50m
2026-06-23 PHHLF - Jun 23, 14:10 UTCJun 23, 14:59 UTC50m
2026-06-23 PHHLF - Jun 23, 07:45 UTCJun 23, 08:35 UTC50m
2026-06-20 PHHLF - Jun 20, 11:05 UTCJun 20, 11:59 UTC55m
2026-06-20 PHHLF - Jun 20, 09:39 UTCJun 20, 10:29 UTC50m
2026-06-19 PHHLF - Jun 19, 11:24 UTCJun 19, 12:29 UTC1h 5m
2026-06-16 PHHLF - Jun 16, 17:24 UTCJun 16, 18:35 UTC1h 10m
2026-06-16 PHHLF - Jun 16, 14:20 UTCJun 16, 15:35 UTC1h 15m
2026-06-16 PHHLF - Jun 16, 10:30 UTCJun 16, 10:55 UTC25m
2026-06-15 PHHLF - Jun 15, 08:15 UTCJun 15, 09:10 UTC55m
2026-06-05 PHHLF - Jun 5, 16:10 UTCJun 5, 17:35 UTC1h 25m
2026-05-30 PHHLF - May 30, 07:50 UTCMay 30, 08:35 UTC45m
2026-05-28 PHHLF - May 28, 09:40 UTCMay 28, 09:55 UTC15m

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 PH-HLF page for operator, model, and routing details .

Mode-S 484571 frequently asked

What is Mode-S code 484571?
484571 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-HLF.
Where is Mode-S 484571 registered?
Mode-S code 484571 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484571 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484571, octal 22042561, decimal 4,736,369.
What flights does 484571 operate?
Mode-S 484571 has broadcast 1 distinct callsign, including PHHLF.