Apparatus

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sensors Mode-S transponder

4D2453

ICAO 24-bit transponder address

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

Hex
4D2453
Octal
23222123
Decimal
5,055,571
Tail
9H-WBI
Type
A21N
Broadcasting now · callsign WMT3XC · 37,000 ft
Flights observed
202
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 22:45 UTC

Current position

4D2453 is currently broadcasting. Map zoomed to live position.

Callsign history 20 distinct

Callsign Airline Flights Last seen
WZZ89ZP Wizz Air 5 2026-07-26
WZZ2253 Wizz Air 5 2026-07-26
WZZ6730 - 4 2026-07-21
WZZ9152 - 3 2026-07-21
WZZ6989 - 3 2026-07-20
WZZ63KR Wizz Air 3 2026-07-21
WZZ5VQ - 3 2026-07-19
WZZ5SA Wizz Air 3 2026-07-20
WZZ39LP Wizz Air 3 2026-06-14
WZZ3971 - 3 2026-07-21
WZZ2050 - 3 2026-06-30
WZZ934 - 2 2026-07-12
WZZ902 - 2 2026-07-12
WZZ85PF Wizz Air 2 2026-07-19
WZZ6ZB Wizz Air 2 2026-07-22
WZZ69 Wizz Air 2 2026-06-12
WZZ67JK Wizz Air 2 2026-06-14
WZZ596 - 2 2026-07-21
WZZ5137 - 2 2026-06-28
WZZ509 - 2 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WZZ89ZP KEF → GDN Jul 26, 19:50 UTCJul 26, 22:45 UTC2h 55m
2026-07-26 WZZ2253 BUD → CPH Jul 26, 15:10 UTCJul 26, 18:30 UTC3h 20m
2026-07-26 WZZ3344 - Jul 26, 08:50 UTCJul 26, 13:30 UTC4h 40m
2026-07-26 WZZ88HV TLL → GDN Jul 26, 06:30 UTCJul 26, 07:40 UTC1h 11m
2026-07-26 WZZ628L GDN → TLL Jul 26, 05:25 UTCJul 26, 05:45 UTC20m
2026-07-23 WZZ60EM TIA → GDN Jul 23, 06:50 UTCJul 23, 08:35 UTC1h 45m
2026-07-23 WZZ879 SKP → BTS Jul 23, 03:45 UTCJul 23, 05:25 UTC1h 40m
2026-07-22 WZZ89ZP KEF → GDN Jul 22, 22:40 UTCJul 23, 01:35 UTC2h 55m
2026-07-22 WZZ2253 - Jul 22, 17:35 UTCJul 22, 21:00 UTC3h 25m
2026-07-22 WZZ9QM BGO → GDN Jul 22, 13:05 UTCJul 22, 14:35 UTC1h 30m
2026-07-22 WZZ29V GDN → BGO Jul 22, 11:10 UTCJul 22, 12:10 UTC1h 0m
2026-07-22 WZZ6ZB GDN → LTN Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-21 WZZ47RG - Jul 21, 21:10 UTCJul 21, 23:45 UTC2h 35m
2026-07-21 WZZ596 - Jul 21, 17:25 UTCJul 21, 20:00 UTC2h 35m
2026-07-21 WZZ63KR DTM → GDN Jul 21, 14:40 UTCJul 21, 15:55 UTC1h 15m
2026-07-21 WZZ3971 - Jul 21, 11:40 UTCJul 21, 13:45 UTC2h 5m
2026-07-21 WZZ9152 - Jul 21, 08:10 UTCJul 21, 10:05 UTC1h 55m
2026-07-21 WZZ6730 - Jul 21, 06:00 UTCJul 21, 06:50 UTC50m
2026-07-20 WZZ10LV - Jul 20, 20:35 UTCJul 20, 23:45 UTC3h 10m
2026-07-20 WZZ45SZ - Jul 20, 15:35 UTCJul 20, 19:15 UTC3h 40m
2026-07-20 WZZ6989 - Jul 20, 12:45 UTCJul 20, 14:15 UTC1h 30m
2026-07-20 WZZ5SA GDN → AES Jul 20, 10:05 UTCJul 20, 11:35 UTC1h 30m
2026-07-20 WZZ81 PRN → EAP Jul 20, 07:00 UTCJul 20, 09:00 UTC2h 0m
2026-07-20 WZZ66 GDN → TRD Jul 20, 03:45 UTCJul 20, 05:55 UTC2h 10m
2026-07-19 WZZ89ZP - Jul 19, 20:20 UTCJul 19, 23:30 UTC3h 10m
2026-07-19 WZZ2253 - Jul 19, 15:35 UTCJul 19, 19:10 UTC3h 35m
2026-07-19 WZZ6989 - Jul 19, 12:10 UTCJul 19, 13:45 UTC1h 35m
2026-07-19 WZZ5SA GDN → AES Jul 19, 09:40 UTCJul 19, 11:05 UTC1h 25m
2026-07-19 WZZ5VQ - Jul 19, 07:25 UTCJul 19, 08:45 UTC1h 20m
2026-07-19 WZZ85PF GDN → EIN Jul 19, 05:05 UTCJul 19, 06:30 UTC1h 25m
2026-07-18 WZZ89ZP - Jul 18, 20:25 UTCJul 18, 23:30 UTC3h 5m
2026-07-18 WZZ2253 - Jul 18, 15:35 UTCJul 18, 19:05 UTC3h 30m
2026-07-18 WZZ5VQ - Jul 18, 13:00 UTCJul 18, 14:20 UTC1h 20m
2026-07-18 WZZ172 - Jul 18, 10:10 UTCJul 18, 12:05 UTC1h 55m
2026-07-18 WZZ561 - Jul 18, 07:25 UTCJul 18, 09:05 UTC1h 40m
2026-07-18 WZZ85PF - Jul 18, 05:25 UTCJul 18, 06:25 UTC1h 0m
2026-07-16 WZZ32HX OSL → GDN Jul 16, 20:55 UTCJul 16, 22:10 UTC1h 15m
2026-07-16 WZZ90 - Jul 16, 18:50 UTCJul 16, 20:00 UTC1h 10m
2026-07-16 WZZ63KR - Jul 16, 16:55 UTCJul 16, 18:00 UTC1h 5m
2026-07-16 WZZ3971 - Jul 16, 13:40 UTCJul 16, 15:45 UTC2h 5m
2026-07-16 WZZ9152 - Jul 16, 10:40 UTCJul 16, 12:20 UTC1h 40m
2026-07-16 WZZ6730 - Jul 16, 08:05 UTCJul 16, 09:10 UTC1h 5m
2026-07-16 WZZ90ND - Jul 16, 06:05 UTCJul 16, 07:05 UTC1h 0m
2026-07-16 WZZ37KJ - Jul 16, 04:20 UTCJul 16, 04:50 UTC30m
2026-07-15 WZZ89ZP - Jul 15, 20:10 UTCJul 15, 23:30 UTC3h 20m
2026-07-15 WZZ2253 - Jul 15, 15:40 UTCJul 15, 18:50 UTC3h 10m
2026-07-15 WZZ6989 - Jul 15, 12:40 UTCJul 15, 14:15 UTC1h 35m
2026-07-15 WZZ5SA - Jul 15, 10:30 UTCJul 15, 11:35 UTC1h 5m
2026-07-15 WZZ5VQ - Jul 15, 07:50 UTCJul 15, 09:15 UTC1h 25m
2026-07-15 WMT7UV - Jul 15, 04:00 UTCJul 15, 06:35 UTC2h 35m

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

Mode-S 4D2453 frequently asked

What is Mode-S code 4D2453?
4D2453 is an ICAO 24-bit transponder address. Assigned to 9H-WBI.
Is 4D2453 broadcasting right now?
Yes. Mode-S 4D2453 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2453, octal 23222123, decimal 5,055,571.
What flights does 4D2453 operate?
Mode-S 4D2453 has broadcast 20 distinct callsigns, including WZZ89ZP, WZZ2253, WZZ6730, WZZ9152, WZZ6989.