Apparatus

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sensors Mode-S transponder

4D23BB

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-MMO · AIRBUS A-320

Hex
4D23BB
Octal
23221673
Decimal
5,055,419
Country
MT
Tail
9H-MMO
Type
A320
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
311
Distinct callsigns
20
Country
MT
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 4D23BB.

Country allocation

The ICAO 24-bit address 4D23BB 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
LBT770 - 16 2026-07-17
LBT763 - 13 2026-07-16
LBT384 - 13 2026-07-25
LBT385 Nouvelair 12 2026-07-25
LBT574 Nouvelair 11 2026-07-23
LBT7667 - 10 2026-07-16
LBT762 - 10 2026-07-16
LBT736 - 10 2026-07-23
LBT2608 Nouvelair 10 2026-06-13
LBT741 Nouvelair 9 2026-07-26
LBT555 - 9 2026-07-15
LBT2609 Nouvelair 9 2026-06-13
LBT771 - 8 2026-07-21
LBT7631 Nouvelair 8 2026-07-23
LBT7630 Nouvelair 8 2026-07-23
LBT740 Nouvelair 8 2026-07-26
LBT737 Nouvelair 8 2026-07-23
LBT554 - 8 2026-07-15
LBT575 Nouvelair 7 2026-07-17
LBT508 Nouvelair 7 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LBT589 MRS → DJE Jul 26, 22:25 UTCJul 26, 22:45 UTC20m
2026-07-26 LBT588 DJE → MRS Jul 26, 19:25 UTCJul 26, 20:30 UTC1h 5m
2026-07-26 LBT749 CDG → DJE Jul 26, 14:35 UTCJul 26, 17:05 UTC2h 30m
2026-07-26 LBT748 DJE → CDG Jul 26, 10:40 UTCJul 26, 13:05 UTC2h 25m
2026-07-26 LBT741 TLS → DJE Jul 26, 07:15 UTCJul 26, 09:10 UTC1h 55m
2026-07-26 LBT740 DJE → TLS Jul 26, 04:25 UTCJul 26, 06:10 UTC1h 45m
2026-07-25 LBT385 BRU → DJE Jul 25, 18:45 UTCJul 25, 21:10 UTC2h 25m
2026-07-25 LBT384 - Jul 25, 15:00 UTCJul 25, 17:30 UTC2h 30m
2026-07-25 LBT2641 DUS → DJE Jul 25, 10:35 UTCJul 25, 12:55 UTC2h 20m
2026-07-25 LBT2640 DJE → DUS Jul 25, 06:50 UTCJul 25, 09:20 UTC2h 30m
2026-07-24 LBT508 DJE → CDG Jul 24, 18:10 UTCJul 24, 20:00 UTC1h 50m
2026-07-24 LBT508 DJE → CDG Jul 24, 14:05 UTCJul 24, 16:50 UTC2h 45m
2026-07-24 LBT703 CDG → DJE Jul 24, 07:50 UTCJul 24, 10:05 UTC2h 15m
2026-07-23 LBT702 TUN → CDG Jul 23, 22:10 UTCJul 24, 05:45 UTC7h 35m
2026-07-23 LBT574 DJE → LYS Jul 23, 18:20 UTCJul 23, 20:20 UTC2h 0m
2026-07-23 LBT737 NTE → DJE Jul 23, 13:35 UTCJul 23, 15:40 UTC2h 5m
2026-07-23 LBT736 - Jul 23, 09:55 UTCJul 23, 12:20 UTC2h 25m
2026-07-23 LBT7631 POZ → DJE Jul 23, 05:45 UTCJul 23, 08:35 UTC2h 50m
2026-07-23 LBT7630 DJE → POZ Jul 23, 01:45 UTCJul 23, 04:25 UTC2h 40m
2026-07-22 LBT589 - Jul 22, 21:20 UTCJul 22, 22:25 UTC1h 5m
2026-07-22 LBT588 DJE → MRS Jul 22, 18:30 UTCJul 22, 20:05 UTC1h 35m
2026-07-22 LBT741 TLS → DJE Jul 22, 15:35 UTCJul 22, 16:40 UTC1h 5m
2026-07-22 LBT740 DJE → TLS Jul 22, 10:20 UTCJul 22, 14:20 UTC4h 0m
2026-07-21 LBT385 - Jul 21, 16:40 UTCJul 21, 19:00 UTC2h 20m
2026-07-21 LBT384 - Jul 21, 12:45 UTCJul 21, 15:20 UTC2h 35m
2026-07-21 LBT771 - Jul 21, 09:10 UTCJul 21, 10:35 UTC1h 25m
2026-07-20 LBT2023 DUS → BOD Jul 20, 16:40 UTCJul 21, 08:00 UTC15h 20m
2026-07-20 LBT2022 - Jul 20, 12:55 UTCJul 20, 15:30 UTC2h 35m
2026-07-20 LBT2807 - Jul 20, 08:30 UTCJul 20, 11:05 UTC2h 35m
2026-07-19 LBT2806 DJE → HAJ Jul 19, 22:15 UTCJul 20, 07:20 UTC9h 5m
2026-07-19 LBT574 DJE → LYS Jul 19, 19:05 UTCJul 19, 20:55 UTC1h 50m
2026-07-19 LBT749 - Jul 19, 14:50 UTCJul 19, 16:35 UTC1h 45m
2026-07-19 LBT748 - Jul 19, 10:30 UTCJul 19, 13:00 UTC2h 30m
2026-07-19 LBT741 TLS → DJE Jul 19, 07:20 UTCJul 19, 08:25 UTC1h 5m
2026-07-19 LBT740 DJE → TLS Jul 19, 04:20 UTCJul 19, 06:05 UTC1h 45m
2026-07-18 LBT385 - Jul 18, 19:20 UTCJul 18, 21:30 UTC2h 10m
2026-07-18 LBT384 - Jul 18, 15:05 UTCJul 18, 17:35 UTC2h 30m
2026-07-18 LBT2641 - Jul 18, 10:20 UTCJul 18, 12:50 UTC2h 30m
2026-07-18 LBT2640 DJE → DUS Jul 18, 06:15 UTCJul 18, 08:50 UTC2h 35m
2026-07-17 LBT771 - Jul 17, 22:25 UTCJul 17, 23:45 UTC1h 20m
2026-07-17 LBT770 - Jul 17, 18:34 UTCJul 17, 20:40 UTC2h 5m
2026-07-17 LBT2341 - Jul 17, 14:50 UTCJul 17, 17:09 UTC2h 20m
2026-07-17 LBT2340 - Jul 17, 10:25 UTCJul 17, 12:55 UTC2h 30m
2026-07-17 LBT575 LYS → DJE Jul 17, 01:49 UTCJul 17, 02:54 UTC1h 5m
2026-07-16 LBT574 - Jul 16, 23:25 UTCJul 17, 00:25 UTC1h 0m
2026-07-16 LBT574 - Jul 16, 19:20 UTCJul 16, 21:30 UTC2h 10m
2026-07-16 LBT763 - Jul 16, 14:45 UTCJul 16, 16:44 UTC2h 0m
2026-07-16 LBT762 - Jul 16, 10:55 UTCJul 16, 13:34 UTC2h 40m
2026-07-16 LBT7667 - Jul 16, 06:25 UTCJul 16, 09:15 UTC2h 50m
2026-07-16 LBT7666 DJE → WAW Jul 16, 01:55 UTCJul 16, 04:45 UTC2h 50m

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

Mode-S 4D23BB frequently asked

What is Mode-S code 4D23BB?
4D23BB is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-MMO.
Where is Mode-S 4D23BB registered?
Mode-S code 4D23BB is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D23BB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D23BB, octal 23221673, decimal 5,055,419.
What flights does 4D23BB operate?
Mode-S 4D23BB has broadcast 20 distinct callsigns, including LBT770, LBT763, LBT384, LBT385, LBT574.