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 8h ago
Flights observed
253
Distinct callsigns
20
Country
MT
Last broadcast
8h ago

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 - 14 2026-06-23
LBT763 Nouvelair 12 2026-06-14
LBT2608 Nouvelair 10 2026-06-13
LBT7667 Nouvelair 9 2026-06-18
LBT762 Nouvelair 9 2026-06-14
LBT736 - 9 2026-06-25
LBT384 - 9 2026-07-11
LBT2609 Nouvelair 9 2026-06-13
LBT555 Nouvelair 8 2026-06-10
LBT385 - 8 2026-07-11
LBT7631 Nouvelair 7 2026-06-25
LBT7630 Nouvelair 7 2026-06-25
LBT737 Nouvelair 7 2026-06-25
LBT574 - 7 2026-07-12
LBT554 Nouvelair 7 2026-06-10
LBT741 - 6 2026-07-12
LBT712 - 6 2026-06-24
LBT575 - 6 2026-07-12
LBT771 - 5 2026-06-23
LBT7666 Nouvelair 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LBT2023 - Jul 13, 16:55 UTCJul 13, 19:30 UTC2h 35m
2026-07-13 LBT2022 - Jul 13, 13:05 UTCJul 13, 15:45 UTC2h 40m
2026-07-13 LBT2807 - Jul 13, 09:00 UTCJul 13, 11:30 UTC2h 30m
2026-07-13 LBT2806 DJE → HAJ Jul 13, 04:30 UTCJul 13, 07:15 UTC2h 45m
2026-07-12 LBT575 - Jul 12, 22:30 UTCJul 13, 00:15 UTC1h 45m
2026-07-12 LBT574 - Jul 12, 18:35 UTCJul 12, 20:25 UTC1h 50m
2026-07-12 LBT749 - Jul 12, 14:40 UTCJul 12, 16:55 UTC2h 15m
2026-07-12 LBT748 - Jul 12, 10:25 UTCJul 12, 13:01 UTC2h 35m
2026-07-12 LBT741 TLS → DJE Jul 12, 07:05 UTCJul 12, 08:50 UTC1h 45m
2026-07-12 LBT740 DJE → TLS Jul 12, 03:50 UTCJul 12, 06:01 UTC2h 10m
2026-07-11 LBT385 - Jul 11, 18:50 UTCJul 11, 21:15 UTC2h 25m
2026-07-11 LBT384 DJE → BRU Jul 11, 14:35 UTCJul 11, 17:20 UTC2h 45m
2026-07-11 LBT2641 - Jul 11, 10:15 UTCJul 11, 12:50 UTC2h 35m
2026-07-11 LBT2640 - Jul 11, 06:20 UTCJul 11, 08:45 UTC2h 25m
2026-07-10 LBT50F - Jul 10, 21:30 UTCJul 10, 21:55 UTC25m
2026-07-01 LBT763P - Jul 1, 09:20 UTCJul 1, 11:35 UTC2h 15m
2026-06-25 LBT7632 DJE → KTW Jun 25, 17:30 UTCJun 25, 20:05 UTC2h 35m
2026-06-25 LBT737 NTE → DJE Jun 25, 13:55 UTCJun 25, 16:09 UTC2h 15m
2026-06-25 LBT736 - Jun 25, 10:30 UTCJun 25, 12:15 UTC1h 45m
2026-06-25 LBT7631 POZ → DJE Jun 25, 05:50 UTCJun 25, 08:20 UTC2h 30m
2026-06-25 LBT7630 DJE → POZ Jun 25, 01:35 UTCJun 25, 04:29 UTC2h 55m
2026-06-24 LBT741 TLS → DJE Jun 24, 16:29 UTCJun 24, 17:34 UTC1h 5m
2026-06-24 LBT740 DJE → TLS Jun 24, 13:20 UTCJun 24, 14:39 UTC1h 20m
2026-06-24 LBT713 SXB → DJE Jun 24, 09:00 UTCJun 24, 11:05 UTC2h 5m
2026-06-24 LBT712 - Jun 24, 05:05 UTCJun 24, 07:34 UTC2h 30m
2026-06-23 LBT385 BRU → DJE Jun 23, 18:20 UTCJun 23, 20:59 UTC2h 40m
2026-06-23 LBT384 DJE → BRU Jun 23, 12:40 UTCJun 23, 15:34 UTC2h 55m
2026-06-23 LBT771 - Jun 23, 10:55 UTCJun 23, 11:10 UTC15m
2026-06-23 LBT771 - Jun 23, 08:59 UTCJun 23, 10:24 UTC1h 25m
2026-06-23 LBT770 - Jun 23, 05:29 UTCJun 23, 07:40 UTC2h 10m
2026-06-22 LBT135 BSL → DJE Jun 22, 15:35 UTCJun 22, 17:50 UTC2h 15m
2026-06-22 LBT134 DJE → BSL Jun 22, 11:09 UTCJun 22, 13:35 UTC2h 25m
2026-06-22 LBT513 NCE → DJE Jun 22, 08:04 UTCJun 22, 09:40 UTC1h 35m
2026-06-22 LBT512 DJE → NCE Jun 22, 04:59 UTCJun 22, 06:45 UTC1h 45m
2026-06-21 LBT575 LYS → DJE Jun 21, 22:54 UTCJun 22, 00:44 UTC1h 50m
2026-06-21 LBT574 DJE → LYS Jun 21, 19:05 UTCJun 21, 20:54 UTC1h 50m
2026-06-21 LBT705 NTE → DJE Jun 21, 15:19 UTCJun 21, 17:29 UTC2h 10m
2026-06-21 LBT704 DJE → NTE Jun 21, 11:34 UTCJun 21, 14:05 UTC2h 30m
2026-06-21 LBT7647 WAW → DJE Jun 21, 07:09 UTCJun 21, 10:04 UTC2h 55m
2026-06-21 LBT7646 DJE → WAW Jun 21, 02:50 UTCJun 21, 05:40 UTC2h 50m
2026-06-20 LBT385 BRU → DJE Jun 20, 18:40 UTCJun 20, 20:45 UTC2h 5m
2026-06-20 LBT384 DJE → BRU Jun 20, 14:24 UTCJun 20, 16:59 UTC2h 35m
2026-06-20 LBT2641 DUS → DJE Jun 20, 10:34 UTCJun 20, 13:09 UTC2h 35m
2026-06-20 LBT2640 DJE → DUS Jun 20, 06:14 UTCJun 20, 08:39 UTC2h 25m
2026-06-19 LBT771 BOD → DJE Jun 19, 21:54 UTCJun 19, 23:25 UTC1h 30m
2026-06-19 LBT770 DJE → BOD Jun 19, 18:59 UTCJun 19, 20:59 UTC2h 0m
2026-06-19 LBT2341 DUS → DJE Jun 19, 15:14 UTCJun 19, 17:49 UTC2h 35m
2026-06-19 LBT2340 - Jun 19, 10:14 UTCJun 19, 12:39 UTC2h 25m
2026-06-19 LBT7655 KTW → DJE Jun 19, 06:14 UTCJun 19, 08:34 UTC2h 20m
2026-06-19 LBT7654 DJE → KTW Jun 19, 02:14 UTCJun 19, 04:44 UTC2h 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-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 8h ago.
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, LBT2608, LBT7667, LBT762.