Apparatus

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sensors Mode-S transponder

484CB4

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-BCA · BOEING 737-800

Hex
484CB4
Octal
22046264
Decimal
4,738,228
Country
NL
Tail
PH-BCA
Type
B738
Broadcasting now · callsign KLM99V · 9,000 ft
Flights observed
501
Distinct callsigns
20
Country
NL
Last broadcast
Jul 26, 20:30 UTC

Current position

484CB4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 484CB4 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
KLM60H - 9 2026-07-14
KLM99L KLM Royal Dutch Airlines 6 2026-05-29
KLM80R - 6 2026-07-03
KLM74L KLM Royal Dutch Airlines 6 2026-07-21
KLM1579 KLM Royal Dutch Airlines 6 2026-07-21
KLM1377 - 6 2026-07-02
KLM95P - 5 2026-07-10
KLM89Q KLM Royal Dutch Airlines 5 2026-07-26
KLM62D - 5 2026-07-10
KLM59N - 5 2026-06-30
KLM57C - 5 2026-07-16
KLM56W - 5 2026-07-11
KLM46C KLM Royal Dutch Airlines 5 2026-07-26
KLM42W KLM Royal Dutch Airlines 5 2026-07-26
KLM41U - 5 2026-07-10
KLM1961 - 5 2026-07-17
KLM1958 KLM Royal Dutch Airlines 5 2026-07-18
KLM1412 KLM Royal Dutch Airlines 5 2026-07-24
KLM1411 KLM Royal Dutch Airlines 5 2026-07-24
KLM1408 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KLM25J AMS → CPH Jul 26, 19:30 UTCJul 26, 20:25 UTC55m
2026-07-26 KLM20T IBZ → AMS Jul 26, 15:45 UTCJul 26, 18:10 UTC2h 25m
2026-07-26 KLM95L AMS → LIN Jul 26, 12:05 UTCJul 26, 14:10 UTC2h 5m
2026-07-26 KLM46C MUC → AMS Jul 26, 09:15 UTCJul 26, 10:45 UTC1h 30m
2026-07-26 KLM89Q AMS → LIN Jul 26, 06:35 UTCJul 26, 07:45 UTC1h 10m
2026-07-26 KLM42W BLL → AMS Jul 26, 04:20 UTCJul 26, 05:15 UTC55m
2026-07-25 KLM1301 AMS → BLL Jul 25, 20:20 UTCJul 25, 21:05 UTC45m
2026-07-25 KLM34A ORK → AMS Jul 25, 12:50 UTCJul 25, 14:10 UTC1h 20m
2026-07-25 KLM23F AMS → SPU Jul 25, 10:35 UTCJul 25, 11:50 UTC1h 15m
2026-07-25 KLM78W DUB → AMS Jul 25, 07:40 UTCJul 25, 09:25 UTC1h 45m
2026-07-25 KLM23V AMS → ARN Jul 25, 05:10 UTCJul 25, 06:45 UTC1h 35m
2026-07-24 KLM1412 CDG → AMS Jul 24, 18:35 UTCJul 24, 19:20 UTC45m
2026-07-24 KLM1411 AMS → CDG Jul 24, 16:00 UTCJul 24, 16:50 UTC50m
2026-07-24 KLM80B AGP → AMS Jul 24, 11:50 UTCJul 24, 14:10 UTC2h 20m
2026-07-24 KLM77U AMS → AGP Jul 24, 07:45 UTCJul 24, 10:30 UTC2h 45m
2026-07-24 KLM34E MUC → AMS Jul 24, 05:15 UTCJul 24, 06:25 UTC1h 10m
2026-07-23 KLM83R AMS → STR Jul 23, 19:40 UTCJul 23, 20:40 UTC1h 0m
2026-07-23 KLM1540 LBA → AMS Jul 23, 15:30 UTCJul 23, 17:55 UTC2h 25m
2026-07-23 KLM1539 AMS → MME Jul 23, 12:10 UTCJul 23, 14:15 UTC2h 5m
2026-07-23 KLM46C MUC → AMS Jul 23, 09:35 UTCJul 23, 10:55 UTC1h 20m
2026-07-23 KLM89Q AMS → LIN Jul 23, 06:45 UTCJul 23, 08:05 UTC1h 20m
2026-07-23 KLM70B PRG → AMS Jul 23, 04:20 UTCJul 23, 05:30 UTC1h 10m
2026-07-22 KLM1361 AMS → PRG Jul 22, 19:50 UTCJul 22, 20:50 UTC1h 0m
2026-07-22 KLM84X BSL → AMS Jul 22, 15:40 UTCJul 22, 16:55 UTC1h 15m
2026-07-22 KLM89F AMS → BOD Jul 22, 13:05 UTCJul 22, 14:30 UTC1h 25m
2026-07-22 KLM64A BUD → AMS Jul 22, 11:10 UTCJul 22, 11:45 UTC35m
2026-07-22 KLM70B PRG → AMS Jul 22, 04:05 UTCJul 22, 05:25 UTC1h 20m
2026-07-21 KLM1361 AMS → PRG Jul 21, 19:50 UTCJul 21, 20:55 UTC1h 5m
2026-07-21 KLM1300 TLS → AMS Jul 21, 17:10 UTCJul 21, 18:00 UTC50m
2026-07-21 KLM1299 AMS → BLL Jul 21, 15:05 UTCJul 21, 15:50 UTC45m
2026-07-21 KLM74L GOT → AMS Jul 21, 11:15 UTCJul 21, 13:40 UTC2h 25m
2026-07-21 KLM1579 AMS → LIS Jul 21, 07:25 UTCJul 21, 10:10 UTC2h 45m
2026-07-21 KLM1426 BHX → AMS Jul 21, 04:50 UTCJul 21, 06:00 UTC1h 10m
2026-07-20 KLM1435 AMS → BHX Jul 20, 19:30 UTCJul 20, 20:40 UTC1h 10m
2026-07-20 KLM58M BIO → AMS Jul 20, 15:35 UTCJul 20, 17:05 UTC1h 30m
2026-07-20 KLM91A AMS → BIO Jul 20, 12:40 UTCJul 20, 14:15 UTC1h 35m
2026-07-20 KLM92W CPH → AMS Jul 20, 10:00 UTCJul 20, 11:00 UTC1h 0m
2026-07-20 KLM31K AMS → CPH Jul 20, 08:00 UTCJul 20, 08:55 UTC55m
2026-07-20 KLM50A AMS → BCN Jul 20, 05:40 UTCJul 20, 06:35 UTC55m
2026-07-19 KLM47K AMS → MAN Jul 19, 20:40 UTCJul 19, 21:30 UTC50m
2026-07-19 KLM1410 CDG → AMS Jul 19, 17:30 UTCJul 19, 18:15 UTC45m
2026-07-19 KLM31G AMS → BRS Jul 19, 15:25 UTCJul 19, 16:15 UTC50m
2026-07-19 KLM1670 BCN → AMS Jul 19, 11:25 UTCJul 19, 14:00 UTC2h 35m
2026-07-19 KLM1669 AMS → BCN Jul 19, 07:35 UTCJul 19, 09:50 UTC2h 15m
2026-07-18 KLM1548 LBA → AMS Jul 18, 18:50 UTCJul 18, 21:10 UTC2h 20m
2026-07-18 KLM1547 AMS → LBA Jul 18, 15:10 UTCJul 18, 17:45 UTC2h 35m
2026-07-18 KLM98X DBV → AMS Jul 18, 11:40 UTCJul 18, 13:55 UTC2h 15m
2026-07-18 KLM1977 - Jul 18, 08:45 UTCJul 18, 10:35 UTC1h 50m
2026-07-18 KLM1958 ZRH → AMS Jul 18, 04:05 UTCJul 18, 07:05 UTC3h 0m
2026-07-17 KLM1961 - Jul 17, 19:25 UTCJul 17, 22:05 UTC2h 40m

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

Mode-S 484CB4 frequently asked

What is Mode-S code 484CB4?
484CB4 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-BCA.
Where is Mode-S 484CB4 registered?
Mode-S code 484CB4 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484CB4 broadcasting right now?
Yes. Mode-S 484CB4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484CB4, octal 22046264, decimal 4,738,228.
What flights does 484CB4 operate?
Mode-S 484CB4 has broadcast 20 distinct callsigns, including KLM60H, KLM99L, KLM80R, KLM74L, KLM1579.