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 Jul 20, 18:25 UTC
Flights observed
523
Distinct callsigns
20
Country
NL
Last broadcast
Jul 20, 18:25 UTC

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
KLM24B - 9 2026-07-13
KLM1972 - 9 2026-06-25
KLM91Y - 8 2026-06-19
KLM57C - 8 2026-07-12
KLM46M - 8 2026-06-19
KLM76Q - 7 2026-07-12
KLM39J - 7 2026-06-25
KLM1621 - 7 2026-07-11
KLM47U - 6 2026-07-08
KLM24F - 6 2026-07-08
KLM99H - 5 2026-07-16
KLM961 - 5 2026-07-15
KLM945 - 5 2026-07-07
KLM934 - 5 2026-07-08
KLM87R - 5 2026-07-16
KLM87P KLM Royal Dutch Airlines 5 2026-07-18
KLM85B - 5 2026-06-19
KLM78W - 5 2026-06-16
KLM75C - 5 2026-07-02
KLM70B KLM Royal Dutch Airlines 5 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 KLM1048 - Jul 20, 17:30 UTCJul 20, 18:20 UTC50m
2026-07-20 KLM93B AMS → BHX Jul 20, 15:40 UTCJul 20, 16:30 UTC50m
2026-07-20 KLM1408 - Jul 20, 13:35 UTCJul 20, 14:20 UTC45m
2026-07-20 KLM1407 - Jul 20, 11:10 UTCJul 20, 12:05 UTC55m
2026-07-20 KLM42N GLA → AMS Jul 20, 08:30 UTCJul 20, 09:45 UTC1h 15m
2026-07-20 KLM61B AMS → GLA Jul 20, 06:25 UTCJul 20, 07:35 UTC1h 10m
2026-07-19 KLM1048 - Jul 19, 18:10 UTCJul 19, 18:55 UTC45m
2026-07-19 KLM93B - Jul 19, 16:05 UTCJul 19, 16:55 UTC50m
2026-07-19 KLM58N VIE → AMS Jul 19, 13:15 UTCJul 19, 14:40 UTC1h 25m
2026-07-19 KLM77F - Jul 19, 10:25 UTCJul 19, 11:50 UTC1h 25m
2026-07-19 KLM12B - Jul 19, 08:30 UTCJul 19, 09:10 UTC40m
2026-07-19 KLM1403 - Jul 19, 05:35 UTCJul 19, 06:30 UTC55m
2026-07-18 KLM58M - Jul 18, 15:35 UTCJul 18, 17:00 UTC1h 25m
2026-07-18 KLM91A - Jul 18, 12:45 UTCJul 18, 14:30 UTC1h 45m
2026-07-18 KLM1512 BCN → AMS Jul 18, 09:30 UTCJul 18, 11:20 UTC1h 50m
2026-07-18 KLM87P AMS → BCN Jul 18, 06:30 UTCJul 18, 08:20 UTC1h 50m
2026-07-18 KLM42W - Jul 18, 04:15 UTCJul 18, 05:00 UTC45m
2026-07-17 KLM1301 - Jul 17, 20:10 UTCJul 17, 20:55 UTC45m
2026-07-17 KLM1410 - Jul 17, 17:09 UTCJul 17, 17:50 UTC40m
2026-07-17 KLM31G AMS → CDG Jul 17, 15:00 UTCJul 17, 15:44 UTC45m
2026-07-17 KLM22H BLL → AMS Jul 17, 12:25 UTCJul 17, 13:20 UTC55m
2026-07-17 KLM87L - Jul 17, 10:44 UTCJul 17, 11:25 UTC40m
2026-07-17 KLM96D BRU → AMS Jul 17, 08:59 UTCJul 17, 09:25 UTC25m
2026-07-17 KLM91Z AMS → BRU Jul 17, 07:20 UTCJul 17, 07:44 UTC25m
2026-07-17 KLM68N - Jul 17, 04:29 UTCJul 17, 06:00 UTC1h 30m
2026-07-16 KLM99H - Jul 16, 19:30 UTCJul 16, 21:15 UTC1h 45m
2026-07-16 KLM58M - Jul 16, 16:44 UTCJul 16, 18:10 UTC1h 25m
2026-07-16 KLM91A - Jul 16, 13:40 UTCJul 16, 15:14 UTC1h 35m
2026-07-16 KLM1232 - Jul 16, 10:50 UTCJul 16, 11:54 UTC1h 5m
2026-07-16 KLM87R - Jul 16, 08:15 UTCJul 16, 09:25 UTC1h 10m
2026-07-16 KLM66G - Jul 16, 05:00 UTCJul 16, 05:55 UTC55m
2026-07-15 KLM961 - Jul 15, 21:50 UTCJul 15, 22:40 UTC50m
2026-07-15 KLM60M - Jul 15, 17:50 UTCJul 15, 19:25 UTC1h 35m
2026-07-15 KLM95T AMS → WAW Jul 15, 15:20 UTCJul 15, 16:50 UTC1h 30m
2026-07-15 KLM34A - Jul 15, 12:25 UTCJul 15, 13:45 UTC1h 20m
2026-07-15 KLM23F - Jul 15, 10:10 UTCJul 15, 11:25 UTC1h 15m
2026-07-15 KLM50A MAN → AMS Jul 15, 05:15 UTCJul 15, 06:05 UTC50m
2026-07-14 KLM47K - Jul 14, 20:15 UTCJul 14, 21:00 UTC45m
2026-07-14 KLM1782 BER → AMS Jul 14, 18:05 UTCJul 14, 19:00 UTC55m
2026-07-14 KLM67B - Jul 14, 15:25 UTCJul 14, 16:20 UTC55m
2026-07-14 KLM58N VIE → AMS Jul 14, 12:35 UTCJul 14, 14:05 UTC1h 30m
2026-07-14 KLM77F AMS → VIE Jul 14, 10:10 UTCJul 14, 11:25 UTC1h 15m
2026-07-13 KLM72C - Jul 13, 16:45 UTCJul 13, 18:10 UTC1h 25m
2026-07-13 KLM23M - Jul 13, 13:40 UTCJul 13, 15:10 UTC1h 30m
2026-07-13 KLM1138 - Jul 13, 11:05 UTCJul 13, 12:15 UTC1h 10m
2026-07-13 KLM1137 - Jul 13, 08:15 UTCJul 13, 09:40 UTC1h 25m
2026-07-13 KLM24B VIE → AMS Jul 13, 05:20 UTCJul 13, 06:45 UTC1h 25m
2026-07-12 KLM57C AMS → VIE Jul 12, 18:45 UTCJul 12, 20:10 UTC1h 25m
2026-07-12 KLM84X BOD → AMS Jul 12, 15:45 UTCJul 12, 17:01 UTC1h 15m
2026-07-12 KLM89F AMS → BOD Jul 12, 13:20 UTCJul 12, 14:45 UTC1h 25m

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 Jul 20, 18:25 UTC.
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 KLM24B, KLM1972, KLM91Y, KLM57C, KLM46M.