sensors Mode-S transponder
300990
ICAO 24-bit transponder address · allocated to Italy
Currently assigned to I-MSCA · BOEING 777-200LR
- Hex
- 300990
- Octal
- 14004620
- Decimal
- 3,148,176
- Country
- IT
- Tail
- I-MSCA
- Type
- B77L
- Flights observed
- 208
- Distinct callsigns
- 20
- Country
- IT
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 300990 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 |
|---|---|---|---|
| LSI138 | - | 18 | 2026-06-19 |
| LSI220 | - | 17 | 2026-06-29 |
| LSI252 | - | 16 | 2026-07-12 |
| LSI219 | - | 15 | 2026-06-28 |
| LSI137 | - | 15 | 2026-06-18 |
| LSI155 | - | 13 | 2026-07-10 |
| LSI166 | - | 10 | 2026-06-17 |
| LSI192 | - | 9 | 2026-06-15 |
| LSI191 | - | 9 | 2026-06-15 |
| LSI143 | - | 9 | 2026-06-06 |
| LSI251 | - | 8 | 2026-07-12 |
| LSI156 | - | 8 | 2026-07-11 |
| LSI144 | - | 8 | 2026-06-07 |
| LSI126 | - | 8 | 2026-05-12 |
| LSI177 | - | 6 | 2026-06-16 |
| LSI125 | - | 6 | 2026-05-12 |
| LSI377 | - | 3 | 2026-06-30 |
| LSI376 | - | 3 | 2026-06-30 |
| LSI186 | - | 3 | 2026-05-29 |
| LSI987 | - | 2 | 2026-05-30 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-12 | LSI252 | - | Jul 12, 18:05 UTC | Jul 13, 12:55 UTC | 18h 50m |
| 2026-07-12 | LSI252 | - | Jul 12, 12:05 UTC | Jul 13, 12:00 UTC | 23h 55m |
| 2026-07-12 | LSI251 | - | Jul 12, 10:05 UTC | Jul 13, 10:00 UTC | 23h 55m |
| 2026-07-12 | LSI251 | - | Jul 12, 09:10 UTC | Jul 13, 00:05 UTC | 14h 55m |
| 2026-07-11 | LSI156 | - | Jul 11, 17:35 UTC | Jul 11, 21:25 UTC | 3h 50m |
| 2026-07-11 | LSI156 | - | Jul 11, 07:20 UTC | Jul 11, 07:35 UTC | 15m |
| 2026-07-11 | LSI181 | - | Jul 11, 03:50 UTC | Jul 11, 04:20 UTC | 30m |
| 2026-07-10 | LSI181 | - | Jul 10, 18:40 UTC | Jul 10, 20:40 UTC | 2h 0m |
| 2026-07-10 | LSI155 | - | Jul 10, 15:10 UTC | Jul 10, 15:20 UTC | 10m |
| 2026-07-10 | LSI155 | - | Jul 10, 12:30 UTC | Jul 10, 13:55 UTC | 1h 25m |
| 2026-07-10 | LSI155 | - | Jul 10, 04:15 UTC | Jul 10, 04:30 UTC | 15m |
| 2026-07-09 | LSI155 | - | Jul 9, 23:30 UTC | Jul 9, 23:55 UTC | 25m |
| 2026-07-09 | LSI155 | - | Jul 9, 13:00 UTC | Jul 9, 16:30 UTC | 3h 30m |
| 2026-07-05 | LSI252 | - | Jul 5, 22:55 UTC | Jul 6, 12:25 UTC | 13h 30m |
| 2026-07-05 | LSI252 | - | Jul 5, 16:05 UTC | Jul 6, 12:25 UTC | 20h 20m |
| 2026-07-05 | LSI252 | - | Jul 5, 10:10 UTC | Jul 6, 09:25 UTC | 23h 15m |
| 2026-07-05 | LSI251 | - | Jul 5, 07:10 UTC | Jul 5, 23:15 UTC | 16h 5m |
| 2026-07-04 | LSI156 | - | Jul 4, 19:40 UTC | Jul 4, 23:25 UTC | 3h 45m |
| 2026-07-04 | LSI156 | - | Jul 4, 09:15 UTC | Jul 4, 09:30 UTC | 15m |
| 2026-07-04 | LSI181A | - | Jul 4, 05:50 UTC | Jul 4, 06:20 UTC | 30m |
| 2026-07-03 | LSI181A | - | Jul 3, 20:25 UTC | Jul 3, 22:25 UTC | 2h 0m |
| 2026-07-03 | LSI155 | - | Jul 3, 15:05 UTC | Jul 3, 16:00 UTC | 55m |
| 2026-07-03 | LSI155 | - | Jul 3, 12:55 UTC | Jul 3, 14:10 UTC | 1h 15m |
| 2026-07-03 | LSI155 | - | Jul 3, 04:40 UTC | Jul 3, 04:50 UTC | 10m |
| 2026-07-03 | LSI155 | - | Jul 3, 00:00 UTC | Jul 3, 00:25 UTC | 25m |
| 2026-07-02 | LSI155 | - | Jul 2, 13:10 UTC | Jul 2, 16:50 UTC | 3h 40m |
| 2026-06-30 | LSI377 | - | Jun 30, 06:00 UTC | Jun 30, 07:00 UTC | 1h 0m |
| 2026-06-30 | LSI376 | - | Jun 30, 02:55 UTC | Jun 30, 04:00 UTC | 1h 5m |
| 2026-06-29 | LSI220 | - | Jun 29, 19:20 UTC | Jun 29, 23:14 UTC | 3h 55m |
| 2026-06-28 | LSI220 | - | Jun 28, 22:34 UTC | Jun 29, 22:00 UTC | 23h 25m |
| 2026-06-28 | LSI219 | - | Jun 28, 20:04 UTC | Jun 29, 20:00 UTC | 23h 55m |
| 2026-06-28 | LSI219 | - | Jun 28, 18:59 UTC | Jun 28, 22:45 UTC | 3h 45m |
| 2026-06-28 | LSI928 | - | Jun 28, 15:55 UTC | Jun 28, 17:10 UTC | 1h 15m |
| 2026-06-28 | LSI128 | - | Jun 28, 09:30 UTC | Jun 28, 13:55 UTC | 4h 25m |
| 2026-06-27 | LSI128 | - | Jun 27, 22:29 UTC | Jun 27, 22:45 UTC | 15m |
| 2026-06-27 | LSI127 | - | Jun 27, 16:14 UTC | Jun 27, 16:39 UTC | 25m |
| 2026-06-27 | LSI127 | - | Jun 27, 05:35 UTC | Jun 27, 09:19 UTC | 3h 45m |
| 2026-06-26 | LSI220 | - | Jun 26, 19:39 UTC | Jun 27, 00:00 UTC | 4h 20m |
| 2026-06-25 | LSI220 | - | Jun 25, 22:54 UTC | Jun 26, 21:59 UTC | 23h 5m |
| 2026-06-25 | LSI219 | - | Jun 25, 20:05 UTC | Jun 26, 20:00 UTC | 23h 55m |
| 2026-06-25 | LSI219 | - | Jun 25, 19:20 UTC | Jun 25, 23:05 UTC | 3h 45m |
| 2026-06-25 | LSI365 | - | Jun 25, 07:09 UTC | Jun 25, 08:09 UTC | 1h 0m |
| 2026-06-25 | LSI364 | MXP → LGG | Jun 25, 02:59 UTC | Jun 25, 03:59 UTC | 1h 0m |
| 2026-06-24 | LSI220 | - | Jun 24, 20:14 UTC | Jun 25, 00:09 UTC | 3h 55m |
| 2026-06-23 | LSI220 | - | Jun 23, 23:05 UTC | Jun 24, 21:24 UTC | 22h 20m |
| 2026-06-23 | LSI219 | - | Jun 23, 19:24 UTC | Jun 23, 23:10 UTC | 3h 45m |
| 2026-06-23 | LSI377 | - | Jun 23, 06:29 UTC | Jun 23, 07:35 UTC | 1h 5m |
| 2026-06-23 | LSI376 | - | Jun 23, 03:04 UTC | Jun 23, 04:09 UTC | 1h 5m |
| 2026-06-22 | LSI220 | - | Jun 22, 19:24 UTC | Jun 22, 23:20 UTC | 3h 55m |
| 2026-06-21 | LSI220 | - | Jun 21, 23:14 UTC | Jun 22, 21:59 UTC | 22h 45m |
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 I-MSCA page for operator, model, and routing details .