sensors Mode-S transponder
300A5C
ICAO 24-bit transponder address · allocated to Italy
- Hex
- 300A5C
- Octal
- 14005134
- Decimal
- 3,148,380
- Country
- IT
- Flights observed
- 112
- Distinct callsigns
- 20
- Country
- IT
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address 300A5C falls within the block assigned to Italy (IT) by ICAO Annex 10, Volume III. Every aircraft registered in Italy 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 |
|---|---|---|---|
| LSI252 | - | 14 | 2026-05-29 |
| LSI251 | - | 10 | 2026-05-28 |
| LSI191 | - | 9 | 2026-05-25 |
| LSI166 | - | 9 | 2026-05-27 |
| LSI192 | - | 8 | 2026-05-25 |
| LSI177 | - | 8 | 2026-05-26 |
| LSI220 | - | 7 | 2026-05-24 |
| LSI155 | - | 7 | 2026-05-02 |
| LSI144 | - | 6 | 2026-05-17 |
| LSI143 | - | 6 | 2026-05-30 |
| LSI219 | - | 5 | 2026-05-23 |
| LSI156 | - | 4 | 2026-05-02 |
| LSI965 | - | 2 | 2026-05-21 |
| LSI194 | - | 2 | 2026-05-22 |
| LSI146 | - | 2 | 2026-05-05 |
| LSI145 | - | 2 | 2026-05-05 |
| LSI138 | - | 2 | 2026-04-23 |
| LSI137 | - | 2 | 2026-04-23 |
| LSI126 | - | 2 | 2026-04-21 |
| LSI377 | - | 1 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | LSI143 | - | May 30, 04:40 UTC | May 30, 05:00 UTC | 20m |
| 2026-05-29 | LSI252 | - | May 29, 00:20 UTC | May 29, 14:25 UTC | 14h 5m |
| 2026-05-28 | LSI252 | - | May 28, 16:15 UTC | May 29, 14:25 UTC | 22h 10m |
| 2026-05-28 | LSI251 | - | May 28, 06:50 UTC | May 29, 00:40 UTC | 17h 50m |
| 2026-05-27 | LSI166 | - | May 27, 09:50 UTC | May 27, 13:50 UTC | 4h 0m |
| 2026-05-26 | LSI177 | - | May 26, 19:40 UTC | May 26, 20:15 UTC | 35m |
| 2026-05-26 | LSI177 | - | May 26, 08:39 UTC | May 26, 12:20 UTC | 3h 40m |
| 2026-05-25 | LSI192 | - | May 25, 22:34 UTC | May 26, 02:04 UTC | 3h 30m |
| 2026-05-25 | LSI192 | - | May 25, 11:50 UTC | May 25, 12:10 UTC | 20m |
| 2026-05-25 | LSI191 | - | May 25, 08:25 UTC | May 25, 09:05 UTC | 40m |
| 2026-05-24 | LSI191 | - | May 24, 21:15 UTC | May 24, 23:30 UTC | 2h 15m |
| 2026-05-24 | LSI220 | - | May 24, 08:15 UTC | May 24, 12:05 UTC | 3h 50m |
| 2026-05-23 | LSI219 | - | May 23, 09:05 UTC | May 24, 09:00 UTC | 23h 55m |
| 2026-05-23 | LSI219 | - | May 23, 08:10 UTC | May 23, 10:20 UTC | 2h 10m |
| 2026-05-22 | LSI194 | - | May 22, 13:25 UTC | May 22, 17:20 UTC | 3h 55m |
| 2026-05-21 | LSI194 | - | May 21, 22:30 UTC | May 21, 22:45 UTC | 15m |
| 2026-05-21 | LSI965 | - | May 21, 18:50 UTC | May 21, 19:15 UTC | 25m |
| 2026-05-21 | LSI965 | - | May 21, 07:15 UTC | May 21, 11:30 UTC | 4h 15m |
| 2026-05-21 | LSI364 | - | May 21, 04:15 UTC | May 21, 05:20 UTC | 1h 5m |
| 2026-05-20 | LSI220 | - | May 20, 19:20 UTC | May 20, 23:15 UTC | 3h 55m |
| 2026-05-19 | LSI220 | - | May 19, 21:05 UTC | May 20, 20:25 UTC | 23h 21m |
| 2026-05-19 | LSI219 | - | May 19, 19:05 UTC | May 19, 22:50 UTC | 3h 45m |
| 2026-05-19 | LSI377 | - | May 19, 06:55 UTC | May 19, 07:55 UTC | 1h 0m |
| 2026-05-19 | LSI376 | - | May 19, 03:00 UTC | May 19, 04:05 UTC | 1h 5m |
| 2026-05-18 | LSI220 | - | May 18, 19:45 UTC | May 18, 23:55 UTC | 4h 10m |
| 2026-05-17 | LSI220 | - | May 17, 22:40 UTC | May 18, 20:55 UTC | 22h 14m |
| 2026-05-17 | LSI219 | - | May 17, 19:01 UTC | May 17, 22:40 UTC | 3h 40m |
| 2026-05-17 | LSI144 | - | May 17, 03:45 UTC | May 17, 08:00 UTC | 4h 15m |
| 2026-05-16 | LSI144 | - | May 16, 19:10 UTC | May 16, 19:25 UTC | 15m |
| 2026-05-16 | LSI143 | MXP → HKG | May 16, 04:50 UTC | May 16, 16:15 UTC | 11h 26m |
| 2026-05-15 | LSI220 | - | May 15, 20:05 UTC | May 16, 00:10 UTC | 4h 5m |
| 2026-05-14 | LSI220 | - | May 14, 21:05 UTC | May 15, 21:00 UTC | 23h 54m |
| 2026-05-14 | LSI219 | - | May 14, 19:20 UTC | May 14, 21:20 UTC | 2h 0m |
| 2026-05-13 | LSI166 | - | May 13, 09:55 UTC | May 13, 14:05 UTC | 4h 10m |
| 2026-05-12 | LSI166 | - | May 12, 23:10 UTC | May 12, 23:20 UTC | 10m |
| 2026-05-12 | LSI177 | - | May 12, 08:20 UTC | May 12, 19:25 UTC | 11h 5m |
| 2026-05-11 | LSI192 | - | May 11, 22:00 UTC | May 11, 22:35 UTC | 34m |
| 2026-05-11 | LSI192 | - | May 11, 11:35 UTC | May 11, 11:50 UTC | 15m |
| 2026-05-11 | LSI191 | - | May 11, 08:15 UTC | May 11, 09:00 UTC | 45m |
| 2026-05-10 | LSI191 | - | May 10, 21:14 UTC | May 10, 23:15 UTC | 2h 0m |
| 2026-05-09 | LSI144 | - | May 9, 22:45 UTC | May 10, 03:00 UTC | 4h 15m |
| 2026-05-09 | LSI144 | - | May 9, 14:05 UTC | May 9, 14:20 UTC | 15m |
| 2026-05-09 | LSI143 | - | May 9, 10:45 UTC | May 9, 11:05 UTC | 20m |
| 2026-05-08 | LSI143 | - | May 8, 23:45 UTC | May 9, 01:50 UTC | 2h 5m |
| 2026-05-07 | LSI252 | - | May 7, 22:59 UTC | May 8, 12:25 UTC | 13h 25m |
| 2026-05-07 | LSI252 | - | May 7, 16:40 UTC | May 8, 12:25 UTC | 19h 44m |
| 2026-05-07 | LSI251 | - | May 7, 09:05 UTC | May 8, 08:59 UTC | 23h 54m |
| 2026-05-07 | LSI251 | - | May 7, 07:00 UTC | May 7, 23:19 UTC | 16h 20m |
| 2026-05-06 | LSI346 | - | May 6, 06:15 UTC | May 6, 07:15 UTC | 1h 0m |
| 2026-05-05 | LSI146 | - | May 5, 23:45 UTC | May 6, 04:00 UTC | 4h 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.