Apparatus

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sensors Mode-S transponder

484557

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BXZ · BOEING 737-800

Hex
484557
Octal
22042527
Decimal
4,736,343
Country
NL
Tail
PH-BXZ
Type
B738
Broadcasting now · callsign KLM1137 · 7,000 ft
Flights observed
201
Distinct callsigns
20
Country
NL
Last broadcast
2h ago

Current position

484557 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 484557 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 20 distinct

Callsign Airline Flights Last seen
KLM1961 KLM Royal Dutch Airlines 4 2026-05-25
KLM1958 KLM Royal Dutch Airlines 4 2026-05-26
KLM91A KLM Royal Dutch Airlines 3 2026-05-22
KLM90J KLM Royal Dutch Airlines 3 2026-05-23
KLM84A KLM Royal Dutch Airlines 3 2026-05-28
KLM58M KLM Royal Dutch Airlines 3 2026-05-22
KLM56W KLM Royal Dutch Airlines 3 2026-05-27
KLM44A KLM Royal Dutch Airlines 3 2026-05-15
KLM41U KLM Royal Dutch Airlines 3 2026-05-26
KLM41L KLM Royal Dutch Airlines 3 2026-05-28
KLM27F KLM Royal Dutch Airlines 3 2026-05-22
KLM1960 KLM Royal Dutch Airlines 3 2026-05-29
KLM1959 KLM Royal Dutch Airlines 3 2026-05-29
KLM1163 KLM Royal Dutch Airlines 3 2026-05-15
KLM99V KLM Royal Dutch Airlines 2 2026-05-12
KLM99C KLM Royal Dutch Airlines 2 2026-05-28
KLM945 KLM Royal Dutch Airlines 2 2026-05-11
KLM93W KLM Royal Dutch Airlines 2 2026-05-24
KLM934 KLM Royal Dutch Airlines 2 2026-05-12
KLM924 KLM Royal Dutch Airlines 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KLM22C WRO → AMS May 30, 04:55 UTCMay 30, 06:30 UTC1h 35m
2026-05-29 KLM69P AMS → MRS May 29, 19:45 UTCMay 29, 21:10 UTC1h 25m
2026-05-29 KLM1960 ZRH → AMS May 29, 15:10 UTCMay 29, 18:15 UTC3h 6m
2026-05-29 KLM1959 AMS → ZRH May 29, 10:35 UTCMay 29, 12:25 UTC1h 50m
2026-05-29 KLM44Y CPH → AMS May 29, 07:55 UTCMay 29, 08:55 UTC1h 0m
2026-05-29 KLM55C AMS → GLA May 29, 05:25 UTCMay 29, 06:20 UTC55m
2026-05-28 KLM84A FCO → AMS May 28, 18:25 UTCMay 28, 20:25 UTC2h 0m
2026-05-28 KLM41L AMS → FCO May 28, 15:20 UTCMay 28, 17:15 UTC1h 55m
2026-05-28 KLM86K EDI → AMS May 28, 12:35 UTCMay 28, 13:45 UTC1h 10m
2026-05-28 KLM99C AMS → CPH May 28, 10:15 UTCMay 28, 11:20 UTC1h 5m
2026-05-28 KLM44Y CPH → AMS May 28, 07:35 UTCMay 28, 08:45 UTC1h 10m
2026-05-28 KLM55C AMS → GLA May 28, 05:20 UTCMay 28, 06:15 UTC55m
2026-05-27 KLM1038 AGP → AMS May 27, 20:00 UTCMay 27, 20:45 UTC45m
2026-05-27 KLM91N AMS → MAN May 27, 18:20 UTCMay 27, 19:15 UTC55m
2026-05-27 KLM1780 HAM → AMS May 27, 16:15 UTCMay 27, 17:10 UTC55m
2026-05-27 KLM1779 AMS → HAM May 27, 14:25 UTCMay 27, 15:20 UTC55m
2026-05-27 KLM1314 BOD → AMS May 27, 11:10 UTCMay 27, 12:55 UTC1h 45m
2026-05-27 KLM75C AMS → LIS May 27, 08:35 UTCMay 27, 10:10 UTC1h 35m
2026-05-27 KLM56W BGO → AMS May 27, 04:19 UTCMay 27, 06:20 UTC2h 0m
2026-05-26 KLM41U AMS → NCE May 26, 18:50 UTCMay 26, 21:09 UTC2h 20m
2026-05-26 KLM14D LIN → AMS May 26, 15:05 UTCMay 26, 16:35 UTC1h 30m
2026-05-26 KLM99D AMS → LIN May 26, 12:35 UTCMay 26, 13:54 UTC1h 20m
2026-05-26 KLM1920 GDN → AMS May 26, 10:10 UTCMay 26, 11:15 UTC1h 5m
2026-05-26 KLM29A AMS → ZRH May 26, 08:04 UTCMay 26, 09:04 UTC1h 0m
2026-05-26 KLM1958 ZRH → AMS May 26, 03:25 UTCMay 26, 06:20 UTC2h 55m
2026-05-25 KLM1961 AMS → ZRH May 25, 19:20 UTCMay 25, 22:05 UTC2h 45m
2026-05-25 KLM1300 TLS → AMS May 25, 16:55 UTCMay 25, 17:45 UTC50m
2026-05-25 KLM1299 AMS → BLL May 25, 15:05 UTCMay 25, 15:55 UTC50m
2026-05-25 KLM74L GOT → AMS May 25, 11:20 UTCMay 25, 13:45 UTC2h 25m
2026-05-25 KLM1579 AMS → LIS May 25, 07:10 UTCMay 25, 09:45 UTC2h 35m
2026-05-25 KLM1628 MXP → AMS May 25, 04:10 UTCMay 25, 05:35 UTC1h 25m
2026-05-24 KLM43F AMS → NCE May 24, 19:15 UTCMay 24, 20:35 UTC1h 20m
2026-05-24 KLM1936 GVA → AMS May 24, 15:45 UTCMay 24, 16:45 UTC1h 0m
2026-05-24 KLM71V AMS → GVA May 24, 13:35 UTCMay 24, 14:40 UTC1h 5m
2026-05-24 KLM54H NCE → AMS May 24, 10:45 UTCMay 24, 12:15 UTC1h 30m
2026-05-24 KLM93W AMS → VCE May 24, 08:10 UTCMay 24, 09:35 UTC1h 25m
2026-05-24 KLM72R BHX → AMS May 24, 06:15 UTCMay 24, 07:00 UTC45m
2026-05-23 KLM49W AMS → GVA May 23, 20:20 UTCMay 23, 21:05 UTC45m
2026-05-23 KLM1412 CDG → AMS May 23, 18:30 UTCMay 23, 19:05 UTC35m
2026-05-23 KLM1411 AMS → CDG May 23, 16:10 UTCMay 23, 17:00 UTC50m
2026-05-23 KLM1408 CDG → AMS May 23, 13:15 UTCMay 23, 14:00 UTC45m
2026-05-23 KLM1407 AMS → CDG May 23, 11:05 UTCMay 23, 11:55 UTC50m
2026-05-23 KLM1406 CDG → AMS May 23, 08:55 UTCMay 23, 09:40 UTC45m
2026-05-23 KLM1405 AMS → CDG May 23, 06:50 UTCMay 23, 07:35 UTC45m
2026-05-23 KLM90J BHX → AMS May 23, 04:10 UTCMay 23, 05:05 UTC55m
2026-05-22 KLM27F AMS → NTE May 22, 19:35 UTCMay 22, 20:30 UTC55m
2026-05-22 KLM58M BIO → AMS May 22, 15:55 UTCMay 22, 17:35 UTC1h 40m
2026-05-22 KLM91A AMS → BIO May 22, 13:00 UTCMay 22, 14:30 UTC1h 30m
2026-05-22 KLM924 EDI → AMS May 22, 08:30 UTCMay 22, 09:35 UTC1h 5m
2026-05-22 KLM39M AMS → EDI May 22, 06:10 UTCMay 22, 07:25 UTC1h 15m

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

Mode-S 484557 frequently asked

What is Mode-S code 484557?
484557 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BXZ.
Where is Mode-S 484557 registered?
Mode-S code 484557 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484557 broadcasting right now?
Yes. Mode-S 484557 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484557, octal 22042527, decimal 4,736,343.
What flights does 484557 operate?
Mode-S 484557 has broadcast 20 distinct callsigns, including KLM1961, KLM1958, KLM91A, KLM90J, KLM84A.