Apparatus

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sensors Mode-S transponder

4D234D

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-VUN · BOEING 737 MAX 8

Hex
4D234D
Octal
23221515
Decimal
5,055,309
Country
MT
Tail
9H-VUN
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
265
Distinct callsigns
20
Country
MT
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4D234D.

Country allocation

The ICAO 24-bit address 4D234D 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 20 distinct

Callsign Airline Flights Last seen
RYR1123 Ryanair 6 2026-04-19
RYR9XK Ryanair 5 2026-04-19
RYR9789 Ryanair 5 2026-04-22
RYR5NK Ryanair 5 2026-04-23
RYR9576 Ryanair 4 2026-04-25
RYR434E Ryanair 4 2026-04-28
RYR3514 Ryanair 4 2026-04-20
RYR18QU Ryanair 4 2026-04-19
RYR66GR Ryanair 3 2026-04-15
RYR5F Ryanair 3 2026-04-24
RYR4PC Ryanair 3 2026-04-19
RYR4334 Ryanair 3 2026-04-17
RYR3589 - 3 2026-04-17
RYR31GQ Ryanair 3 2026-04-18
RYR30BE Ryanair 3 2026-04-25
RYR2AN Ryanair 3 2026-04-24
RYR99RH Ryanair 2 2026-05-18
RYR99CK - 2 2026-05-19
RYR99AP Ryanair 2 2026-05-19
RYR90FP Ryanair 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR362D ARN → STN May 30, 18:20 UTCMay 30, 19:15 UTC55m
2026-05-30 RYR3CR LIL → OPO May 30, 15:40 UTCMay 30, 17:00 UTC1h 20m
2026-05-30 RYR7678 ARN → POZ May 30, 13:15 UTCMay 30, 14:25 UTC1h 10m
2026-05-30 RYR22MM MLA → ARN May 30, 08:30 UTCMay 30, 12:05 UTC3h 35m
2026-05-30 RYR3J BVA → SJJ May 30, 04:05 UTCMay 30, 07:25 UTC3h 20m
2026-05-29 RYR7HE WRO → ARN May 29, 21:15 UTCMay 29, 22:40 UTC1h 25m
2026-05-29 RYR104A ARN → WRO May 29, 18:50 UTCMay 29, 20:10 UTC1h 20m
2026-05-29 RYR43ZZ VIE → ARN May 29, 16:10 UTCMay 29, 18:05 UTC1h 55m
2026-05-29 RYR70WE MAD → STN May 29, 13:20 UTCMay 29, 15:05 UTC1h 45m
2026-05-29 RYR22MM MLA → ARN May 29, 08:30 UTCMay 29, 12:15 UTC3h 45m
2026-05-29 RYR3J BVA → SJJ May 29, 04:05 UTCMay 29, 07:25 UTC3h 20m
2026-05-28 RYR6TR VCE → HEL May 28, 19:10 UTCMay 28, 22:35 UTC3h 25m
2026-05-28 RYR91QV - May 28, 14:30 UTCMay 28, 17:45 UTC3h 15m
2026-05-28 RYR82 PEG → AOI May 28, 12:05 UTCMay 28, 12:45 UTC40m
2026-05-28 RYR22PF ARN → TLL May 28, 10:40 UTCMay 28, 11:20 UTC40m
2026-05-28 RYR305X FAO → OPO May 28, 07:35 UTCMay 28, 09:35 UTC2h 0m
2026-05-28 RYR8DU CIA → TIA May 28, 04:30 UTCMay 28, 06:30 UTC2h 0m
2026-05-27 RYR8FE OUD → MRS May 27, 15:40 UTCMay 27, 19:30 UTC3h 50m
2026-05-27 RYR637V ARN → AGP May 27, 10:20 UTCMay 27, 14:25 UTC4h 5m
2026-05-27 RYR9167 BVA → ARN May 27, 07:00 UTCMay 27, 09:05 UTC2h 5m
2026-05-27 RYR9166 ARN → BVA May 27, 03:59 UTCMay 27, 05:59 UTC2h 0m
2026-05-26 RYR8PE RAK → TLS May 26, 20:34 UTCMay 26, 22:15 UTC1h 40m
2026-05-26 RYR9BR VLC → PSA May 26, 18:24 UTCMay 26, 19:50 UTC1h 25m
2026-05-26 RYR8743 BGY → BER May 26, 15:20 UTCMay 26, 17:30 UTC2h 10m
2026-05-26 RYR8742 ARN → TRS May 26, 12:14 UTCMay 26, 14:30 UTC2h 15m
2026-05-26 RYR7675 BZR → ARN May 26, 08:04 UTCMay 26, 10:50 UTC2h 45m
2026-05-26 RYR62AC ARN → BZR May 26, 04:24 UTCMay 26, 07:19 UTC2h 55m
2026-05-25 RYR1YC BCN → EMA May 25, 17:50 UTCMay 25, 20:15 UTC2h 25m
2026-05-25 RYR7ZN EIN → DUB May 25, 13:50 UTCMay 25, 16:05 UTC2h 15m
2026-05-25 RYR6SM STN → MXP May 25, 10:50 UTCMay 25, 12:55 UTC2h 5m
2026-05-25 RYR7CB DUB → GLA May 25, 08:40 UTCMay 25, 09:55 UTC1h 15m
2026-05-25 RYR8XV BGY → TIA May 25, 06:05 UTCMay 25, 07:25 UTC1h 20m
2026-05-24 RYR7ZN EIN → DUB May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 RYR6SM STN → MXP May 24, 18:45 UTCMay 24, 20:45 UTC2h 0m
2026-05-24 RYR98ML STN → BGY May 24, 15:30 UTCMay 24, 17:05 UTC1h 35m
2026-05-24 RYR85FA BGY → STN May 24, 12:35 UTCMay 24, 14:15 UTC1h 40m
2026-05-24 RYR62FP ALC → MXP May 24, 10:00 UTCMay 24, 11:25 UTC1h 25m
2026-05-24 RYR38HN BGY → CRV May 24, 06:40 UTCMay 24, 08:00 UTC1h 20m
2026-05-23 RYR56VF NAP → BGY May 23, 19:15 UTCMay 23, 20:05 UTC50m
2026-05-23 RYR98RD BGY → NAP May 23, 17:05 UTCMay 23, 18:05 UTC1h 0m
2026-05-23 RYR74UN TRF → BGY May 23, 13:55 UTCMay 23, 16:00 UTC2h 5m
2026-05-23 RYR84CE BGY → TRF May 23, 11:00 UTCMay 23, 13:15 UTC2h 15m
2026-05-23 RYR80VE STN → SCQ May 23, 07:20 UTCMay 23, 09:50 UTC2h 30m
2026-05-23 RYR5XF CPH → ALC May 23, 03:55 UTCMay 23, 06:25 UTC2h 30m
2026-05-22 RYR2NJ ZAZ → BGY May 22, 20:45 UTCMay 22, 22:50 UTC2h 5m
2026-05-22 RYR18AE BGY → OPO May 22, 17:40 UTCMay 22, 19:45 UTC2h 5m
2026-05-22 RYR5WN HER → BGY May 22, 14:20 UTCMay 22, 16:30 UTC2h 10m
2026-05-22 RYR6MQ DUB → KGS May 22, 11:05 UTCMay 22, 13:15 UTC2h 10m
2026-05-22 RYR57TF MLA → BGY May 22, 07:25 UTCMay 22, 09:10 UTC1h 45m
2026-05-22 RYR477H BGY → MLA May 22, 05:05 UTCMay 22, 06:35 UTC1h 30m

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

Mode-S 4D234D frequently asked

What is Mode-S code 4D234D?
4D234D is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-VUN.
Where is Mode-S 4D234D registered?
Mode-S code 4D234D is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D234D broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D234D, octal 23221515, decimal 5,055,309.
What flights does 4D234D operate?
Mode-S 4D234D has broadcast 20 distinct callsigns, including RYR1123, RYR9XK, RYR9789, RYR5NK, RYR9576.