Apparatus

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sensors Mode-S transponder

4D2455

ICAO 24-bit transponder address

Currently assigned to 9H-WBK · AIRBUS A-321neo

Hex
4D2455
Octal
23222125
Decimal
5,055,573
Tail
9H-WBK
Type
A21N
Broadcasting now · callsign WZZ84LZ · 31,600 ft
Flights observed
312
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 21:15 UTC

Current position

4D2455 is currently broadcasting. Map zoomed to live position.

Callsign history 20 distinct

Callsign Airline Flights Last seen
WZZ9XC Wizz Air 6 2026-07-23
WZZ8CR Wizz Air 6 2026-07-23
WZZ8BK - 5 2026-07-23
WZZ6QX - 5 2026-07-23
WZZ6425 - 5 2026-07-23
WZZ361 Wizz Air 5 2026-07-23
WZZ48CN Wizz Air 4 2026-07-23
WZZ21WX - 4 2026-07-23
WZZ8AX Wizz Air 3 2026-07-20
WZZ88HV - 3 2026-07-19
WZZ8340 - 3 2026-07-20
WZZ628L - 3 2026-07-19
WZZ4NY - 3 2026-06-24
WZZ3XL Wizz Air 3 2026-07-19
WZZ3344 - 3 2026-07-19
WZZ2SW - 3 2026-06-22
WZZ2779 - 3 2026-07-20
WZZ1KM - 3 2026-06-22
WZZ9PJ Wizz Air 2 2026-06-18
WZZ9524 - 2 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WZZ58NF KTW → FCO Jul 26, 19:55 UTCJul 26, 21:15 UTC1h 20m
2026-07-26 WZZ23YT DTM → KTW Jul 26, 17:55 UTCJul 26, 19:05 UTC1h 10m
2026-07-26 WZZ2YU KTW → DTM Jul 26, 15:40 UTCJul 26, 17:05 UTC1h 25m
2026-07-26 WZZ39LP BOJ → KTW Jul 26, 13:00 UTCJul 26, 14:35 UTC1h 35m
2026-07-26 WZZ5E LUZ → BOJ Jul 26, 10:30 UTCJul 26, 11:55 UTC1h 25m
2026-07-26 WZZ53BY BOJ → LUZ Jul 26, 07:55 UTCJul 26, 09:30 UTC1h 35m
2026-07-26 WZZ67JK KTW → BOJ Jul 26, 05:10 UTCJul 26, 06:30 UTC1h 20m
2026-07-25 WZZ8UW BCN → KTW Jul 25, 15:50 UTCJul 25, 17:55 UTC2h 5m
2026-07-25 WZZ5PA KTW → BCN Jul 25, 12:00 UTCJul 25, 14:25 UTC2h 25m
2026-07-25 WZZ64YA LTN → KTW Jul 25, 08:05 UTCJul 25, 10:20 UTC2h 15m
2026-07-25 WZZ9389 - Jul 25, 04:10 UTCJul 25, 06:40 UTC2h 30m
2026-07-24 WZZ2CG BCN → WAW Jul 24, 19:15 UTCJul 24, 21:45 UTC2h 30m
2026-07-24 WZZ6296 - Jul 24, 15:20 UTCJul 24, 17:55 UTC2h 35m
2026-07-24 WZZ401 AMM → TIA Jul 24, 13:40 UTCJul 24, 14:20 UTC40m
2026-07-24 WZZ139 - Jul 24, 10:35 UTCJul 24, 11:40 UTC1h 5m
2026-07-24 WZZ46LS SZZ → OSL Jul 24, 08:30 UTCJul 24, 09:45 UTC1h 15m
2026-07-24 WZZ43KR OSL → SZZ Jul 24, 06:35 UTCJul 24, 07:40 UTC1h 5m
2026-07-24 WZZ4040 IAS → LTN Jul 24, 04:30 UTCJul 24, 05:50 UTC1h 20m
2026-07-23 WZZ8CR SVG → GDN Jul 23, 20:00 UTCJul 23, 21:15 UTC1h 15m
2026-07-23 WZZ9XC BUD → LTN Jul 23, 17:45 UTCJul 23, 19:10 UTC1h 25m
2026-07-23 WZZ8BK - Jul 23, 16:05 UTCJul 23, 16:55 UTC50m
2026-07-23 WZZ6QX - Jul 23, 14:10 UTCJul 23, 15:05 UTC55m
2026-07-23 WZZ48CN HAU → GDN Jul 23, 11:45 UTCJul 23, 13:10 UTC1h 25m
2026-07-23 WZZ21WX - Jul 23, 09:30 UTCJul 23, 10:50 UTC1h 20m
2026-07-23 WZZ361 GDN → BGO Jul 23, 07:05 UTCJul 23, 08:35 UTC1h 30m
2026-07-23 WZZ6425 GDN → TRD Jul 23, 04:35 UTCJul 23, 06:15 UTC1h 40m
2026-07-22 WZZ8CR SVG → GDN Jul 22, 21:40 UTCJul 22, 22:25 UTC45m
2026-07-22 WZZ9XC BUD → LTN Jul 22, 19:30 UTCJul 22, 20:50 UTC1h 20m
2026-07-22 WZZ8YE AUH → BUD Jul 22, 17:35 UTCJul 22, 18:30 UTC55m
2026-07-22 WZZ309 DTM → VNO Jul 22, 15:45 UTCJul 22, 16:45 UTC1h 0m
2026-07-22 WZZ1523 - Jul 22, 14:15 UTCJul 22, 14:55 UTC40m
2026-07-22 WZZ41MK GDN → CPH Jul 22, 12:40 UTCJul 22, 13:20 UTC40m
2026-07-22 WZZ139 - Jul 22, 11:10 UTCJul 22, 11:50 UTC40m
2026-07-22 WZZ4040 GDN → OSL Jul 22, 04:10 UTCJul 22, 05:25 UTC1h 15m
2026-07-21 WZZ873 BGO → SZZ Jul 21, 21:00 UTCJul 21, 23:05 UTC2h 5m
2026-07-21 WZZ46 BCN → BUD Jul 21, 17:50 UTCJul 21, 20:00 UTC2h 10m
2026-07-21 WZZ30DF - Jul 21, 16:10 UTCJul 21, 17:00 UTC50m
2026-07-21 WZZ84LZ - Jul 21, 14:35 UTCJul 21, 15:20 UTC45m
2026-07-21 WZZ43UE RJK → GDN Jul 21, 12:10 UTCJul 21, 13:40 UTC1h 30m
2026-07-21 WZZ5107 - Jul 21, 09:10 UTCJul 21, 10:30 UTC1h 20m
2026-07-21 WZZ4UM RJK → LUZ Jul 21, 07:10 UTCJul 21, 08:25 UTC1h 15m
2026-07-21 WZZ87QS GDN → RJK Jul 21, 05:10 UTCJul 21, 06:15 UTC1h 5m
2026-07-20 WZZ8CR SVG → GDN Jul 20, 20:00 UTCJul 20, 21:25 UTC1h 25m
2026-07-20 WZZ9XC BUD → LTN Jul 20, 17:50 UTCJul 20, 19:15 UTC1h 25m
2026-07-20 WZZ8BK - Jul 20, 16:05 UTCJul 20, 16:55 UTC50m
2026-07-20 WZZ6QX - Jul 20, 14:15 UTCJul 20, 15:10 UTC55m
2026-07-20 WZZ2779 - Jul 20, 11:50 UTCJul 20, 13:20 UTC1h 30m
2026-07-20 WZZ8340 - Jul 20, 09:15 UTCJul 20, 10:40 UTC1h 25m
2026-07-20 WZZ8AX SOF → EIN Jul 20, 06:40 UTCJul 20, 08:00 UTC1h 20m
2026-07-20 WZZ51PW GDN → BGO Jul 20, 04:20 UTCJul 20, 05:45 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 9H-WBK page for operator, model, and routing details .

Mode-S 4D2455 frequently asked

What is Mode-S code 4D2455?
4D2455 is an ICAO 24-bit transponder address. Assigned to 9H-WBK.
Is 4D2455 broadcasting right now?
Yes. Mode-S 4D2455 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2455, octal 23222125, decimal 5,055,573.
What flights does 4D2455 operate?
Mode-S 4D2455 has broadcast 20 distinct callsigns, including WZZ9XC, WZZ8CR, WZZ8BK, WZZ6QX, WZZ6425.