Apparatus

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sensors Mode-S transponder

484131

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BXB · BOEING 737-800

Hex
484131
Octal
22040461
Decimal
4,735,281
Country
NL
Tail
PH-BXB
Type
B738
No current signal · last broadcast 1h ago
Flights observed
287
Distinct callsigns
20
Country
NL
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 484131.

Country allocation

The ICAO 24-bit address 484131 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
KLM1972 KLM Royal Dutch Airlines 8 2026-05-25
KLM91Y KLM Royal Dutch Airlines 7 2026-05-28
KLM46M KLM Royal Dutch Airlines 7 2026-05-28
KLM39J KLM Royal Dutch Airlines 6 2026-05-25
KLM70B KLM Royal Dutch Airlines 5 2026-05-04
KLM95U KLM Royal Dutch Airlines 4 2026-05-17
KLM85B KLM Royal Dutch Airlines 4 2026-05-26
KLM78W KLM Royal Dutch Airlines 4 2026-05-23
KLM76Q KLM Royal Dutch Airlines 4 2026-05-29
KLM26E KLM Royal Dutch Airlines 4 2026-05-26
KLM23V KLM Royal Dutch Airlines 4 2026-05-23
KLM1621 KLM Royal Dutch Airlines 4 2026-05-28
KLM1361 KLM Royal Dutch Airlines 4 2026-05-03
KLM93R KLM Royal Dutch Airlines 3 2026-05-18
KLM92Y KLM Royal Dutch Airlines 3 2026-04-16
KLM87P KLM Royal Dutch Airlines 3 2026-05-13
KLM83A KLM Royal Dutch Airlines 3 2026-05-26
KLM74N KLM Royal Dutch Airlines 3 2026-05-19
KLM73D KLM Royal Dutch Airlines 3 2026-04-20
KLM67E KLM Royal Dutch Airlines 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KLM1930 GVA → AMS May 30, 07:40 UTCMay 30, 08:15 UTC35m
2026-05-30 KLM27E AMS → GVA May 30, 05:15 UTCMay 30, 06:25 UTC1h 10m
2026-05-29 KLM1038 AGP → AMS May 29, 19:55 UTCMay 29, 20:45 UTC50m
2026-05-29 KLM91N AMS → MAN May 29, 18:05 UTCMay 29, 18:55 UTC50m
2026-05-29 KLM1780 HAM → AMS May 29, 15:50 UTCMay 29, 16:50 UTC1h 0m
2026-05-29 KLM1779 AMS → HAM May 29, 13:40 UTCMay 29, 14:35 UTC55m
2026-05-29 KLM1314 BOD → AMS May 29, 10:40 UTCMay 29, 12:15 UTC1h 35m
2026-05-29 KLM75C AMS → LIS May 29, 08:15 UTCMay 29, 09:45 UTC1h 30m
2026-05-29 KLM76Q KRS → AMS May 29, 04:50 UTCMay 29, 06:15 UTC1h 25m
2026-05-28 KLM1621 AMS → LIN May 28, 19:30 UTCMay 28, 20:45 UTC1h 15m
2026-05-28 KLM1300 TLS → AMS May 28, 17:20 UTCMay 28, 18:00 UTC40m
2026-05-28 KLM1299 AMS → BLL May 28, 15:35 UTCMay 28, 16:20 UTC45m
2026-05-28 KLM46M ARN → AMS May 28, 12:30 UTCMay 28, 14:05 UTC1h 35m
2026-05-28 KLM91Y AMS → ARN May 28, 09:50 UTCMay 28, 11:30 UTC1h 40m
2026-05-27 KLM1318 BOD → AMS May 27, 17:55 UTCMay 27, 19:45 UTC1h 50m
2026-05-27 KLM95T AMS → TLS May 27, 15:35 UTCMay 27, 17:05 UTC1h 30m
2026-05-27 KLM46M ARN → AMS May 27, 12:20 UTCMay 27, 14:00 UTC1h 40m
2026-05-27 KLM91Y AMS → ARN May 27, 09:40 UTCMay 27, 11:15 UTC1h 35m
2026-05-27 KLM94K BUD → AMS May 27, 05:29 UTCMay 27, 07:20 UTC1h 51m
2026-05-26 KLM85P AMS → BUD May 26, 19:55 UTCMay 26, 21:34 UTC1h 40m
2026-05-26 KLM59W AMS → MAN May 26, 16:55 UTCMay 26, 17:39 UTC45m
2026-05-26 KLM83A AMS → HAM May 26, 15:24 UTCMay 26, 16:05 UTC40m
2026-05-26 KLM46M ARN → AMS May 26, 12:14 UTCMay 26, 14:00 UTC1h 45m
2026-05-26 KLM91Y AMS → ARN May 26, 09:25 UTCMay 26, 11:00 UTC1h 35m
2026-05-26 KLM26E CDG → AMS May 26, 07:15 UTCMay 26, 07:59 UTC45m
2026-05-26 KLM85B AMS → CDG May 26, 05:00 UTCMay 26, 05:54 UTC55m
2026-05-25 KLM26Y VIE → AMS May 25, 18:15 UTCMay 25, 19:50 UTC1h 35m
2026-05-25 KLM1905 AMS → BEG May 25, 15:45 UTCMay 25, 17:15 UTC1h 30m
2026-05-25 KLM1972 BUD → AMS May 25, 11:10 UTCMay 25, 13:00 UTC1h 50m
2026-05-25 KLM39J AMS → SPU May 25, 08:15 UTCMay 25, 09:50 UTC1h 35m
2026-05-25 KLM88C LHR → AMS May 25, 05:10 UTCMay 25, 06:15 UTC1h 5m
2026-05-24 KLM1145 AMS → OSL May 24, 19:55 UTCMay 24, 21:05 UTC1h 10m
2026-05-24 KLM1036 MAN → AMS May 24, 17:00 UTCMay 24, 17:45 UTC45m
2026-05-24 KLM1035 AMS → MAN May 24, 14:35 UTCMay 24, 15:30 UTC55m
2026-05-24 KLM1972 BUD → AMS May 24, 11:00 UTCMay 24, 12:45 UTC1h 45m
2026-05-24 KLM39J AMS → SPU May 24, 08:10 UTCMay 24, 09:45 UTC1h 35m
2026-05-24 KLM66G NCL → AMS May 24, 04:55 UTCMay 24, 05:55 UTC1h 0m
2026-05-23 KLM961 AMS → NCL May 23, 21:25 UTCMay 23, 22:25 UTC1h 0m
2026-05-23 KLM84A FCO → AMS May 23, 18:05 UTCMay 23, 20:10 UTC2h 6m
2026-05-23 KLM41L AMS → FCO May 23, 15:05 UTCMay 23, 16:45 UTC1h 40m
2026-05-23 KLM88Y PRG → AMS May 23, 12:50 UTCMay 23, 14:00 UTC1h 10m
2026-05-23 KLM69E AMS → PRG May 23, 11:00 UTCMay 23, 11:45 UTC45m
2026-05-23 KLM69E AMS → PRG May 23, 10:40 UTCMay 23, 10:55 UTC15m
2026-05-23 KLM78W DUB → AMS May 23, 07:45 UTCMay 23, 09:25 UTC1h 40m
2026-05-23 KLM23V AMS → ARN May 23, 05:15 UTCMay 23, 06:50 UTC1h 35m
2026-05-22 KLM1972 BUD → AMS May 22, 11:10 UTCMay 22, 12:55 UTC1h 45m
2026-05-22 KLM39J AMS → SPU May 22, 08:20 UTCMay 22, 09:45 UTC1h 25m
2026-05-22 KLM80R OTP → AMS May 22, 04:10 UTCMay 22, 06:40 UTC2h 30m
2026-05-21 KLM1377 AMS → OTP May 21, 19:30 UTCMay 21, 21:50 UTC2h 20m
2026-05-21 KLM14D LIN → AMS May 21, 15:10 UTCMay 21, 16:30 UTC1h 20m

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

Mode-S 484131 frequently asked

What is Mode-S code 484131?
484131 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BXB.
Where is Mode-S 484131 registered?
Mode-S code 484131 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484131 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484131, octal 22040461, decimal 4,735,281.
What flights does 484131 operate?
Mode-S 484131 has broadcast 20 distinct callsigns, including KLM1972, KLM91Y, KLM46M, KLM39J, KLM70B.