Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4D2535

ICAO 24-bit transponder address

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

Hex
4D2535
Octal
23222465
Decimal
5,055,797
Tail
9H-WNI
Type
A21N
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
285
Distinct callsigns
20
Country
-
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 4D2535.

Callsign history 20 distinct

Callsign Airline Flights Last seen
WZZ9ZZ - 4 2026-06-29
WZZ654 - 4 2026-07-25
WZZ9UF - 3 2026-06-28
WZZ9LJ Wizz Air 3 2026-07-22
WZZ9FS - 3 2026-07-26
WZZ9BQ Wizz Air 3 2026-07-26
WZZ9193 - 3 2026-07-06
WZZ8QA - 3 2026-06-28
WZZ8025 - 3 2026-06-28
WZZ6779 - 3 2026-07-03
WZZ5KX - 3 2026-07-03
WZZ513 - 3 2026-06-28
WZZ299 Wizz Air 3 2026-07-21
WZZ2755 - 3 2026-07-22
WZZ1BD - 3 2026-06-28
WZZ1919 - 3 2026-07-21
WZZ109 - 3 2026-07-06
WMT521 - 3 2026-07-17
WZZ9WL Wizz Air 2 2026-06-15
WZZ998 - 2 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WZZ368V VLC → SOF Jul 26, 20:10 UTCJul 26, 21:15 UTC1h 5m
2026-07-26 WZZ1742 CPH → GDN Jul 26, 15:45 UTCJul 26, 18:50 UTC3h 5m
2026-07-26 WZZ9FS - Jul 26, 13:25 UTCJul 26, 14:35 UTC1h 10m
2026-07-26 WZZ9BQ SOF → KRK Jul 26, 10:55 UTCJul 26, 12:15 UTC1h 20m
2026-07-26 WZZ8AJ NCE → SOF Jul 26, 07:35 UTCJul 26, 09:10 UTC1h 35m
2026-07-26 WZZ4AG SOF → NCE Jul 26, 04:25 UTCJul 26, 06:40 UTC2h 16m
2026-07-25 WZZ81HW PMI → SOF Jul 25, 21:40 UTCJul 25, 23:50 UTC2h 10m
2026-07-25 WZZ2PE SOF → PMI Jul 25, 17:15 UTCJul 25, 20:00 UTC2h 45m
2026-07-25 WZZ268 BVA → BEG Jul 25, 13:50 UTCJul 25, 15:45 UTC1h 55m
2026-07-25 WZZ4005 FCO → ORY Jul 25, 10:35 UTCJul 25, 12:45 UTC2h 10m
2026-07-25 WZZ654 DTM → SOF Jul 25, 07:20 UTCJul 25, 09:25 UTC2h 5m
2026-07-25 WZZ5006 MLA → WAW Jul 25, 03:45 UTCJul 25, 06:00 UTC2h 15m
2026-07-24 WZZ505 EIN → VAR Jul 24, 21:05 UTCJul 24, 23:40 UTC2h 35m
2026-07-24 WZZ6YE SOF → LTN Jul 24, 16:45 UTCJul 24, 19:45 UTC3h 0m
2026-07-24 WZZ3PW EIN → SOF Jul 24, 12:40 UTCJul 24, 14:45 UTC2h 5m
2026-07-24 WZZ59 PRG → MXP Jul 24, 09:10 UTCJul 24, 11:45 UTC2h 35m
2026-07-24 WZZ9HS FMM → SOF Jul 24, 06:05 UTCJul 24, 07:40 UTC1h 35m
2026-07-24 WZZ232 - Jul 24, 03:15 UTCJul 24, 05:05 UTC1h 50m
2026-07-23 WZZ81HW PMI → SOF Jul 23, 20:30 UTCJul 23, 22:45 UTC2h 15m
2026-07-23 WZZ2PE SOF → PMI Jul 23, 16:35 UTCJul 23, 19:20 UTC2h 45m
2026-07-23 WZZ9GQ SUF → SOF Jul 23, 14:20 UTCJul 23, 15:25 UTC1h 5m
2026-07-23 WZZ8663 - Jul 23, 12:10 UTCJul 23, 13:20 UTC1h 10m
2026-07-23 WZZ49JV AGP → SOF Jul 23, 07:55 UTCJul 23, 10:55 UTC3h 0m
2026-07-23 WZZ107 BRI → OTP Jul 23, 02:55 UTCJul 23, 06:25 UTC3h 30m
2026-07-22 WZZ9LJ FCO → SOF Jul 22, 20:15 UTCJul 22, 21:35 UTC1h 20m
2026-07-22 WZZ2755 - Jul 22, 17:05 UTCJul 22, 18:50 UTC1h 45m
2026-07-22 WZZ268 - Jul 22, 14:10 UTCJul 22, 16:00 UTC1h 50m
2026-07-22 WZZ4005 - Jul 22, 11:15 UTCJul 22, 13:00 UTC1h 45m
2026-07-22 WZZ645 CLJ → BCN Jul 22, 03:00 UTCJul 22, 05:25 UTC2h 25m
2026-07-21 WZZ299 HAM → SKP Jul 21, 20:10 UTCJul 21, 23:05 UTC2h 55m
2026-07-21 WZZ1919 - Jul 21, 14:25 UTCJul 21, 18:00 UTC3h 35m
2026-07-21 WZZ59EU PMO → SOF Jul 21, 11:35 UTCJul 21, 13:00 UTC1h 25m
2026-07-21 WZZ4275 TZL → BER Jul 21, 08:50 UTCJul 21, 10:20 UTC1h 30m
2026-07-21 WZZ4EZ TIA → SOF Jul 21, 06:35 UTCJul 21, 07:20 UTC45m
2026-07-21 WZZ62YT SOF → TIA Jul 21, 04:40 UTCJul 21, 05:05 UTC25m
2026-07-20 WZZ519 - Jul 20, 17:45 UTCJul 20, 20:05 UTC2h 20m
2026-07-20 WZZ576 - Jul 20, 14:05 UTCJul 20, 16:45 UTC2h 40m
2026-07-20 WZZ219 - Jul 20, 08:20 UTCJul 20, 10:55 UTC2h 35m
2026-07-20 WZZ3351 ALC → OTP Jul 20, 04:10 UTCJul 20, 06:40 UTC2h 30m
2026-07-19 WZZ6NC - Jul 19, 20:40 UTCJul 19, 23:35 UTC2h 55m
2026-07-19 WZZ4404 - Jul 19, 15:20 UTCJul 19, 18:35 UTC3h 15m
2026-07-19 WZZ7XN LTN → BTS Jul 19, 12:20 UTCJul 19, 14:05 UTC1h 45m
2026-07-19 WZZ274 - Jul 19, 08:55 UTCJul 19, 11:05 UTC2h 10m
2026-07-19 WZZ3JJ - Jul 19, 07:05 UTCJul 19, 08:10 UTC1h 5m
2026-07-19 WZZ3BR BTS → PRN Jul 19, 04:55 UTCJul 19, 05:55 UTC1h 0m
2026-07-18 WZZ121 NCE → BTS Jul 18, 20:15 UTCJul 18, 21:40 UTC1h 25m
2026-07-18 WZZ622 BTS → NCE Jul 18, 17:40 UTCJul 18, 19:20 UTC1h 40m
2026-07-18 WZZ3AR - Jul 18, 15:40 UTCJul 18, 16:15 UTC35m
2026-07-18 WZZ934 - Jul 18, 14:20 UTCJul 18, 14:50 UTC30m
2026-07-18 WZZ221 FCO → BTS Jul 18, 11:10 UTCJul 18, 12:25 UTC1h 15m

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

Mode-S 4D2535 frequently asked

What is Mode-S code 4D2535?
4D2535 is an ICAO 24-bit transponder address. Assigned to 9H-WNI.
Is 4D2535 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D2535, octal 23222465, decimal 5,055,797.
What flights does 4D2535 operate?
Mode-S 4D2535 has broadcast 20 distinct callsigns, including WZZ9ZZ, WZZ654, WZZ9UF, WZZ9LJ, WZZ9FS.