sensors Mode-S transponder

4868BC

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-AXN · AIRBUS A-321neo

Hex
4868BC
Octal
22064274
Decimal
4,745,404
Country
NL
Tail
PH-AXN
Type
A21N
No current signal · last broadcast 12h ago
Flights observed
10
Distinct callsigns
9
Country
NL
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4868BC.

Country allocation

The ICAO 24-bit address 4868BC 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 9 distinct

Callsign Airline Flights Last seen
KLM35B - 2 2026-04-14
KLM93Z - 1 2026-04-13
KLM84V KLM Royal Dutch Airlines 1 2026-04-14
KLM82D - 1 2026-04-12
KLM66U - 1 2026-04-13
KLM61T - 1 2026-04-13
KLM46P - 1 2026-04-14
KLM45H KLM Royal Dutch Airlines 1 2026-04-13
KLM16K - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 KLM46P - Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-14 KLM35B - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 KLM35B - Apr 14, 08:45 UTCApr 14, 09:05 UTC20m
2026-04-14 KLM84V LHR → AMS Apr 14, 05:50 UTCApr 14, 06:35 UTC45m
2026-04-13 KLM61T - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 KLM16K - Apr 13, 16:20 UTCApr 13, 18:10 UTC1h 50m
2026-04-13 KLM93Z AMS → BCN Apr 13, 13:10 UTCApr 13, 15:05 UTC1h 55m
2026-04-13 KLM66U - Apr 13, 09:15 UTCApr 13, 11:25 UTC2h 10m
2026-04-13 KLM45H AMS → MAD Apr 13, 05:25 UTCApr 13, 07:45 UTC2h 20m
2026-04-12 KLM82D - Apr 12, 18:25 UTCApr 12, 20:10 UTC1h 45m

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

Mode-S 4868BC frequently asked

What is Mode-S code 4868BC?
4868BC is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-AXN.
Where is Mode-S 4868BC registered?
Mode-S code 4868BC is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4868BC broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4868BC, octal 22064274, decimal 4,745,404.
What flights does 4868BC operate?
Mode-S 4868BC has broadcast 9 distinct callsigns, including KLM35B, KLM93Z, KLM84V, KLM82D, KLM66U.