sensors Mode-S transponder

4D23AB

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-VISTA · BOMBARDIER BD-700 Global 7000/7500

Hex
4D23AB
Octal
23221653
Decimal
5,055,403
Country
MT
Tail
9H-VISTA
Type
GL7T
No current signal · last broadcast 1d ago
Flights observed
90
Distinct callsigns
7
Country
MT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4D23AB.

Country allocation

The ICAO 24-bit address 4D23AB falls within the block assigned to Malta (MT) by ICAO Annex 10, Volume III. Every aircraft registered in Malta 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 7 distinct

Callsign Airline Flights Last seen
VJT725 - 81 2026-07-16
VJT958T - 2 2026-05-24
VJT274 - 2 2026-04-28
VJT145 - 2 2026-04-27
VJT255 - 1 2026-06-25
VJT225 - 1 2026-06-09
VJT199T - 1 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 VJT725 - Jul 16, 15:30 UTCJul 16, 17:25 UTC1h 55m
2026-07-02 VJT725 GVA → BQH Jul 2, 12:15 UTCJul 2, 13:30 UTC1h 15m
2026-06-30 VJT725 - Jun 30, 14:55 UTCJul 1, 05:15 UTC14h 20m
2026-06-29 VJT725 - Jun 29, 10:59 UTCJun 29, 13:44 UTC2h 45m
2026-06-27 VJT725 - Jun 27, 08:10 UTCJun 27, 08:39 UTC30m
2026-06-27 VJT725 - Jun 27, 05:39 UTCJun 27, 06:50 UTC1h 10m
2026-06-26 VJT725 - Jun 26, 08:34 UTCJun 26, 13:49 UTC5h 15m
2026-06-26 VJT725 - Jun 26, 06:45 UTCJun 26, 06:54 UTC10m
2026-06-26 VJT725 - Jun 26, 04:59 UTCJun 26, 05:05 UTC5m
2026-06-25 VJT255 - Jun 25, 10:50 UTCJun 25, 23:05 UTC12h 15m
2026-06-24 VJT725 - Jun 24, 13:30 UTCJun 24, 15:00 UTC1h 30m
2026-06-24 VJT725 - Jun 24, 04:55 UTCJun 24, 12:04 UTC7h 10m
2026-06-23 VJT725 - Jun 23, 19:19 UTCJun 24, 01:55 UTC6h 35m
2026-06-20 VJT199T - Jun 20, 12:45 UTCJun 20, 18:40 UTC5h 55m
2026-06-18 VJT725 NCE → HPN Jun 18, 12:20 UTCJun 18, 20:40 UTC8h 20m
2026-06-17 VJT725 - Jun 17, 07:10 UTCJun 17, 08:05 UTC55m
2026-06-17 VJT725 - Jun 17, 04:45 UTCJun 17, 06:10 UTC1h 25m
2026-06-16 VJT725 LIN → LBG Jun 16, 19:55 UTCJun 16, 21:05 UTC1h 10m
2026-06-15 VJT725 - Jun 15, 17:20 UTCJun 15, 17:50 UTC30m
2026-06-15 VJT725 - Jun 15, 11:24 UTCJun 15, 15:25 UTC4h 0m
2026-06-15 VJT725 DWC → DWC Jun 15, 08:40 UTCJun 15, 08:49 UTC10m
2026-06-14 VJT725 - Jun 14, 11:25 UTCJun 14, 15:45 UTC4h 20m
2026-06-13 VJT725 - Jun 13, 13:15 UTCJun 13, 16:00 UTC2h 45m
2026-06-12 VJT725 VIE → FAB Jun 12, 12:20 UTCJun 12, 14:20 UTC2h 0m
2026-06-12 VJT725 INN → VIE Jun 12, 10:15 UTCJun 12, 10:55 UTC40m
2026-06-12 VJT725 - Jun 12, 07:20 UTCJun 12, 08:35 UTC1h 15m
2026-06-11 VJT725 - Jun 11, 10:40 UTCJun 11, 11:05 UTC25m
2026-06-11 VJT725 DUB → OXF Jun 11, 08:40 UTCJun 11, 09:15 UTC35m
2026-06-11 VJT725 - Jun 11, 05:15 UTCJun 11, 07:10 UTC1h 55m
2026-06-09 VJT225 - Jun 9, 10:35 UTCJun 9, 21:10 UTC10h 35m
2026-06-09 VJT725 - Jun 9, 06:05 UTCJun 9, 06:40 UTC35m
2026-06-07 VJT725 - Jun 7, 09:10 UTCJun 7, 10:25 UTC1h 15m
2026-06-07 VJT725 - Jun 7, 07:40 UTCJun 7, 07:50 UTC10m
2026-06-07 VJT725 - Jun 7, 01:20 UTCJun 7, 06:00 UTC4h 40m
2026-06-06 VJT725 - Jun 6, 09:34 UTCJun 6, 12:00 UTC2h 25m
2026-06-06 VJT725 - Jun 6, 03:45 UTCJun 6, 08:35 UTC4h 50m
2026-06-05 VJT725 - Jun 5, 04:00 UTCJun 5, 07:50 UTC3h 50m
2026-06-04 VJT725 TSA → HND Jun 4, 11:55 UTCJun 4, 14:25 UTC2h 30m
2026-06-04 VJT725 - Jun 4, 03:45 UTCJun 4, 08:00 UTC4h 15m
2026-06-03 VJT725 - Jun 3, 09:40 UTCJun 3, 10:10 UTC30m
2026-06-03 VJT725 - Jun 3, 05:00 UTCJun 3, 05:20 UTC20m
2026-06-02 VJT725 - Jun 2, 01:30 UTCJun 2, 02:25 UTC55m
2026-05-30 VJT725 - May 30, 17:50 UTCMay 30, 19:15 UTC1h 25m
2026-05-29 VJT725 HKG → SJC May 29, 04:05 UTCMay 29, 16:30 UTC12h 25m
2026-05-25 VJT725 - May 25, 08:35 UTCMay 25, 08:55 UTC20m
2026-05-25 VJT725 - May 25, 05:05 UTCMay 25, 08:00 UTC2h 55m
2026-05-24 VJT725 - May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 VJT958T - May 24, 05:40 UTCMay 24, 06:15 UTC35m
2026-05-23 VJT958T - May 23, 15:15 UTCMay 24, 03:20 UTC12h 6m
2026-05-22 VJT725 - May 22, 19:40 UTCMay 22, 20:35 UTC55m

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

Mode-S 4D23AB frequently asked

What is Mode-S code 4D23AB?
4D23AB is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-VISTA.
Where is Mode-S 4D23AB registered?
Mode-S code 4D23AB is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D23AB broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D23AB, octal 23221653, decimal 5,055,403.
What flights does 4D23AB operate?
Mode-S 4D23AB has broadcast 7 distinct callsigns, including VJT725, VJT958T, VJT274, VJT145, VJT255.