sensors Mode-S transponder
507CB3
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK32132 · AIRBUS A-321neo
- Hex
- 507CB3
- Octal
- 24076263
- Decimal
- 5,274,803
- Country
- UZ
- Tail
- UK32132
- Type
- A21N
- Flights observed
- 94
- Distinct callsigns
- 20
- Country
- UZ
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 507CB3 falls within the block assigned to Uzbekistan (UZ) by ICAO Annex 10, Volume III. Every aircraft registered in Uzbekistan 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 |
|---|---|---|---|
| MFX5538 | - | 19 | 2026-05-24 |
| MFX5536 | - | 12 | 2026-05-25 |
| MFX5535 | - | 8 | 2026-04-28 |
| MFX434 | - | 8 | 2026-05-12 |
| MFX550 | - | 6 | 2026-05-29 |
| MFX549 | - | 4 | 2026-05-29 |
| MFX530 | - | 4 | 2026-05-14 |
| MFX433 | - | 4 | 2026-05-25 |
| MFX222 | - | 4 | 2026-05-29 |
| MFX221 | - | 4 | 2026-05-07 |
| MFX5540 | - | 3 | 2026-05-26 |
| MFX5539 | - | 3 | 2026-05-25 |
| MFX446 | - | 3 | 2026-05-11 |
| MFX5537 | - | 2 | 2026-05-20 |
| MFX529 | - | 2 | 2026-05-16 |
| MFX421 | - | 2 | 2026-05-23 |
| MFX404 | My Freighter LLC | 2 | 2026-04-26 |
| MFX512 | - | 1 | 2026-04-15 |
| MFX456 | - | 1 | 2026-05-28 |
| MFX445 | - | 1 | 2026-05-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | MFX222 | - | May 29, 22:05 UTC | May 29, 22:35 UTC | 30m |
| 2026-05-29 | MFX550 | ICN → TBS | May 29, 04:25 UTC | May 29, 20:30 UTC | 16h 5m |
| 2026-05-29 | MFX549 | - | May 29, 01:05 UTC | May 29, 01:25 UTC | 20m |
| 2026-05-28 | MFX456 | - | May 28, 07:55 UTC | May 29, 00:20 UTC | 16h 25m |
| 2026-05-26 | MFX5540 | - | May 26, 19:20 UTC | May 27, 07:30 UTC | 12h 11m |
| 2026-05-26 | MFX5540 | - | May 26, 10:50 UTC | May 27, 07:30 UTC | 20h 41m |
| 2026-05-26 | MFX5540 | - | May 26, 09:45 UTC | May 27, 07:30 UTC | 21h 46m |
| 2026-05-25 | MFX5539 | - | May 25, 20:50 UTC | May 26, 20:45 UTC | 23h 55m |
| 2026-05-25 | MFX433 | - | May 25, 10:50 UTC | May 26, 10:44 UTC | 23h 55m |
| 2026-05-25 | MFX5536 | - | May 25, 06:30 UTC | May 25, 22:10 UTC | 15h 40m |
| 2026-05-24 | MFX5536 | - | May 24, 19:15 UTC | May 25, 11:00 UTC | 15h 45m |
| 2026-05-24 | MFX5539 | - | May 24, 08:55 UTC | May 25, 08:45 UTC | 23h 50m |
| 2026-05-24 | MFX5539 | - | May 24, 06:50 UTC | May 25, 06:45 UTC | 23h 55m |
| 2026-05-24 | MFX5538 | - | May 24, 04:30 UTC | May 24, 21:40 UTC | 17h 10m |
| 2026-05-24 | MFX5538 | - | May 24, 00:50 UTC | May 24, 21:40 UTC | 20h 50m |
| 2026-05-23 | MFX5538 | - | May 23, 23:20 UTC | May 24, 21:40 UTC | 22h 20m |
| 2026-05-23 | MFX5538 | - | May 23, 20:50 UTC | May 24, 20:45 UTC | 23h 55m |
| 2026-05-23 | MFX5538 | - | May 23, 20:30 UTC | May 24, 08:55 UTC | 12h 25m |
| 2026-05-23 | MFX5538 | - | May 23, 12:50 UTC | May 24, 08:55 UTC | 20h 6m |
| 2026-05-23 | MFX5538 | - | May 23, 12:30 UTC | May 24, 08:55 UTC | 20h 25m |
| 2026-05-23 | MFX421 | - | May 23, 08:15 UTC | May 23, 08:30 UTC | 15m |
| 2026-05-22 | MFX550 | - | May 22, 04:35 UTC | May 22, 05:00 UTC | 25m |
| 2026-05-22 | MFX549 | - | May 22, 01:10 UTC | May 22, 01:25 UTC | 15m |
| 2026-05-21 | MFX5538 | - | May 21, 04:50 UTC | May 22, 00:20 UTC | 19h 30m |
| 2026-05-21 | MFX5538 | - | May 21, 04:00 UTC | May 22, 00:20 UTC | 20h 20m |
| 2026-05-20 | MFX5537 | - | May 20, 19:30 UTC | May 21, 07:50 UTC | 12h 20m |
| 2026-05-19 | MFX433 | - | May 19, 00:45 UTC | May 19, 14:30 UTC | 13h 45m |
| 2026-05-18 | MFX433 | - | May 18, 07:35 UTC | May 19, 02:00 UTC | 18h 24m |
| 2026-05-16 | MFX529 | - | May 16, 21:40 UTC | May 17, 08:40 UTC | 11h 0m |
| 2026-05-16 | MFX529 | - | May 16, 10:01 UTC | May 17, 08:40 UTC | 22h 40m |
| 2026-05-14 | MFX530 | - | May 14, 12:50 UTC | May 15, 07:45 UTC | 18h 55m |
| 2026-05-14 | MFX5538 | - | May 14, 10:50 UTC | May 15, 07:45 UTC | 20h 55m |
| 2026-05-14 | MFX5538 | - | May 14, 10:15 UTC | May 15, 07:45 UTC | 21h 30m |
| 2026-05-14 | MFX5538 | - | May 14, 02:50 UTC | May 14, 22:20 UTC | 19h 30m |
| 2026-05-14 | MFX5538 | - | May 14, 01:25 UTC | May 14, 22:20 UTC | 20h 55m |
| 2026-05-12 | MFX434 | - | May 12, 10:25 UTC | May 12, 23:45 UTC | 13h 20m |
| 2026-05-11 | MFX434 | - | May 11, 21:35 UTC | May 12, 11:30 UTC | 13h 55m |
| 2026-05-11 | MFX446 | - | May 11, 11:15 UTC | May 12, 10:35 UTC | 23h 21m |
| 2026-05-11 | MFX446 | - | May 11, 07:20 UTC | May 11, 22:00 UTC | 14h 40m |
| 2026-05-09 | MFX530 | - | May 9, 13:20 UTC | May 10, 08:20 UTC | 19h 0m |
| 2026-05-07 | MFX530 | - | May 7, 12:50 UTC | May 8, 07:50 UTC | 19h 0m |
| 2026-05-07 | MFX530 | - | May 7, 12:35 UTC | May 8, 07:50 UTC | 19h 15m |
| 2026-05-07 | MFX221 | - | May 7, 09:20 UTC | May 7, 09:40 UTC | 20m |
| 2026-05-04 | MFX434 | - | May 4, 20:45 UTC | May 5, 10:40 UTC | 13h 55m |
| 2026-05-04 | MFX434 | - | May 4, 13:55 UTC | May 5, 10:40 UTC | 20h 46m |
| 2026-05-04 | MFX401 | TAS → SVO | May 4, 08:25 UTC | May 4, 09:00 UTC | 35m |
| 2026-05-02 | MFX5537 | - | May 2, 14:15 UTC | May 3, 08:45 UTC | 18h 29m |
| 2026-05-01 | MFX446 | - | May 1, 19:20 UTC | May 2, 14:20 UTC | 19h 1m |
| 2026-05-01 | MFX445 | - | May 1, 16:05 UTC | May 2, 14:20 UTC | 22h 15m |
| 2026-05-01 | MFX550 | - | May 1, 04:30 UTC | May 1, 19:45 UTC | 15h 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.
Prefer a tail-number view? See the UK32132 page for operator, model, and routing details .