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 7h ago
Flights observed
486
Distinct callsigns
20
Country
NL
Last broadcast
7h 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
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
KLM945 - 5 2026-07-07
KLM934 - 5 2026-07-08
KLM85B - 5 2026-06-19
KLM78W - 5 2026-06-16
KLM75C - 5 2026-07-02
KLM70B KLM Royal Dutch Airlines 5 2026-05-04
KLM26E - 5 2026-06-19
KLM23V - 5 2026-06-16
KLM1314 - 5 2026-07-02
KLM99H - 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-12 KLM86F OSL → AMS Jul 12, 10:25 UTCJul 12, 11:55 UTC1h 30m
2026-07-12 KLM65M - Jul 12, 08:05 UTCJul 12, 09:20 UTC1h 15m
2026-07-12 KLM76Q LIN → AMS Jul 12, 05:01 UTCJul 12, 06:20 UTC1h 20m
2026-07-11 KLM1621 AMS → LIN Jul 11, 19:35 UTCJul 11, 20:50 UTC1h 15m
2026-07-11 KLM38T ZRH → AMS Jul 11, 16:15 UTCJul 11, 17:20 UTC1h 5m
2026-07-11 KLM99V - Jul 11, 14:00 UTCJul 11, 15:05 UTC1h 5m
2026-07-11 KLM78B - Jul 11, 10:10 UTCJul 11, 11:50 UTC1h 40m
2026-07-11 KLM61R - Jul 11, 07:40 UTCJul 11, 09:10 UTC1h 30m
2026-07-11 KLM1266 CPH → AMS Jul 11, 05:05 UTCJul 11, 06:05 UTC1h 0m
2026-07-10 KLM25J - Jul 10, 19:30 UTCJul 10, 20:30 UTC1h 0m
2026-07-10 KLM1368 BUD → AMS Jul 10, 15:35 UTCJul 10, 17:25 UTC1h 50m
2026-07-10 KLM1367 AMS → BUD Jul 10, 13:10 UTCJul 10, 14:40 UTC1h 30m
2026-07-10 KLM1512 BCN → AMS Jul 10, 09:45 UTCJul 10, 11:35 UTC1h 50m
2026-07-10 KLM87P - Jul 10, 06:20 UTCJul 10, 08:10 UTC1h 50m
2026-07-10 KLM42W - Jul 10, 04:05 UTCJul 10, 04:55 UTC50m
2026-07-09 KLM1301 - Jul 9, 20:15 UTCJul 9, 20:55 UTC40m
2026-07-09 KLM98X DBV → AMS Jul 9, 11:35 UTCJul 9, 13:55 UTC2h 20m
2026-07-09 KLM1977 - Jul 9, 08:30 UTCJul 9, 10:15 UTC1h 45m
2026-07-09 KLM24B VIE → AMS Jul 9, 05:05 UTCJul 9, 06:35 UTC1h 30m
2026-07-08 KLM57C - Jul 8, 18:55 UTCJul 8, 20:10 UTC1h 15m
2026-07-08 KLM24F TLS → AMS Jul 8, 15:30 UTCJul 8, 17:00 UTC1h 30m
2026-07-08 KLM47U - Jul 8, 12:55 UTCJul 8, 14:20 UTC1h 25m
2026-07-08 KLM1232 - Jul 8, 10:20 UTCJul 8, 11:25 UTC1h 5m
2026-07-08 KLM87R - Jul 8, 08:15 UTCJul 8, 09:25 UTC1h 10m
2026-07-08 KLM934 GLA → AMS Jul 8, 05:10 UTCJul 8, 06:20 UTC1h 10m
2026-07-07 KLM945 - Jul 7, 21:05 UTCJul 7, 22:20 UTC1h 15m
2026-07-07 KLM60M - Jul 7, 17:40 UTCJul 7, 19:25 UTC1h 45m
2026-07-07 KLM95T - Jul 7, 15:15 UTCJul 7, 16:45 UTC1h 30m
2026-07-07 KLM1408 - Jul 7, 13:15 UTCJul 7, 13:55 UTC40m
2026-07-07 KLM1407 AMS → CDG Jul 7, 10:50 UTCJul 7, 11:35 UTC45m
2026-07-07 KLM1902 VIE → AMS Jul 7, 07:40 UTCJul 7, 09:15 UTC1h 35m
2026-07-07 KLM43G AMS → VIE Jul 7, 05:05 UTCJul 7, 06:25 UTC1h 20m
2026-07-06 KLM26Y VIE → AMS Jul 6, 18:25 UTCJul 6, 19:55 UTC1h 30m
2026-07-06 KLM1905 AMS → VIE Jul 6, 16:10 UTCJul 6, 17:30 UTC1h 20m
2026-07-06 KLM92Y ATH → AMS Jul 6, 11:30 UTCJul 6, 14:40 UTC3h 10m
2026-07-06 KLM67E AMS → ATH Jul 6, 07:25 UTCJul 6, 10:05 UTC2h 40m
2026-07-05 KLM1540 - Jul 5, 16:25 UTCJul 5, 18:45 UTC2h 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 7h 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 KLM24B, KLM1972, KLM91Y, KLM57C, KLM46M.