sensors Mode-S transponder
683273
ICAO 24-bit transponder address · allocated to Kazakhstan
Currently assigned to UP-B3726 · BOEING 737 MAX 9
- Hex
- 683273
- Octal
- 32031163
- Decimal
- 6,828,659
- Country
- KZ
- Tail
- UP-B3726
- Type
- B39M
- Flights observed
- 152
- Distinct callsigns
- 20
- Country
- KZ
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 683273 falls within the block assigned to Kazakhstan (KZ) by ICAO Annex 10, Volume III. Every aircraft registered in Kazakhstan 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 |
|---|---|---|---|
| VSV5240 | - | 37 | 2026-05-28 |
| VSV5241 | - | 19 | 2026-05-28 |
| VSV5266 | - | 17 | 2026-05-30 |
| VSV5291 | Scat Air | 9 | 2026-05-24 |
| VSV5265 | - | 9 | 2026-05-29 |
| VSV5264 | - | 8 | 2026-05-26 |
| VSV5262 | - | 8 | 2026-05-23 |
| VSV5263 | - | 7 | 2026-05-19 |
| VSV5321 | Scat Air | 6 | 2026-04-19 |
| VSV5304 | - | 5 | 2026-04-18 |
| VSV5261 | - | 4 | 2026-05-23 |
| VSV5200 | Scat Air | 4 | 2026-05-20 |
| VSV5292 | - | 3 | 2026-05-03 |
| VSV5212 | Scat Air | 3 | 2026-05-09 |
| VSV5275 | - | 2 | 2026-05-10 |
| VSV5272 | - | 2 | 2026-05-04 |
| VSV726 | Scat Air | 1 | 2026-04-13 |
| VSV725 | Scat Air | 1 | 2026-04-13 |
| VSV5320 | - | 1 | 2026-04-17 |
| VSV5274 | - | 1 | 2026-05-06 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | VSV5266 | - | May 30, 03:20 UTC | May 30, 06:00 UTC | 2h 40m |
| 2026-05-30 | VSV5266 | - | May 30, 00:35 UTC | May 30, 00:45 UTC | 10m |
| 2026-05-29 | VSV5265 | - | May 29, 22:10 UTC | May 29, 22:20 UTC | 10m |
| 2026-05-29 | VSV5265 | - | May 29, 17:55 UTC | May 29, 20:25 UTC | 2h 30m |
| 2026-05-28 | VSV5240 | - | May 28, 19:05 UTC | May 29, 09:15 UTC | 14h 10m |
| 2026-05-28 | VSV5240 | - | May 28, 12:50 UTC | May 29, 09:15 UTC | 20h 25m |
| 2026-05-28 | VSV5240 | - | May 28, 10:50 UTC | May 29, 09:15 UTC | 22h 25m |
| 2026-05-28 | VSV5241 | - | May 28, 10:30 UTC | May 29, 08:45 UTC | 22h 15m |
| 2026-05-28 | VSV5241 | - | May 28, 05:35 UTC | May 29, 00:20 UTC | 18h 45m |
| 2026-05-28 | VSV5241 | - | May 28, 02:55 UTC | May 29, 00:20 UTC | 21h 25m |
| 2026-05-28 | VSV5266 | - | May 28, 00:25 UTC | May 28, 00:35 UTC | 10m |
| 2026-05-27 | VSV5265 | - | May 27, 22:25 UTC | May 27, 22:35 UTC | 10m |
| 2026-05-27 | VSV5265 | - | May 27, 18:00 UTC | May 27, 20:25 UTC | 2h 25m |
| 2026-05-26 | VSV5264 | - | May 26, 18:55 UTC | May 27, 06:40 UTC | 11h 45m |
| 2026-05-26 | VSV5264 | - | May 26, 08:50 UTC | May 27, 06:40 UTC | 21h 50m |
| 2026-05-26 | VSV5240 | - | May 26, 06:14 UTC | May 26, 21:29 UTC | 15h 15m |
| 2026-05-25 | VSV5240 | - | May 25, 23:00 UTC | May 26, 21:29 UTC | 22h 30m |
| 2026-05-25 | VSV5240 | - | May 25, 19:15 UTC | May 26, 09:09 UTC | 13h 55m |
| 2026-05-25 | VSV5240 | - | May 25, 12:55 UTC | May 26, 09:09 UTC | 20h 14m |
| 2026-05-25 | VSV5240 | - | May 25, 11:00 UTC | May 26, 09:09 UTC | 22h 9m |
| 2026-05-24 | VSV5291 | ALA → ALA | May 24, 14:50 UTC | May 25, 08:55 UTC | 18h 5m |
| 2026-05-24 | VSV5291 | ALA → ALA | May 24, 14:30 UTC | May 25, 08:55 UTC | 18h 25m |
| 2026-05-23 | VSV5262 | - | May 23, 21:20 UTC | May 24, 10:15 UTC | 12h 55m |
| 2026-05-23 | VSV5261 | - | May 23, 04:50 UTC | May 24, 01:55 UTC | 21h 5m |
| 2026-05-23 | VSV5266 | - | May 23, 02:55 UTC | May 24, 01:55 UTC | 23h 0m |
| 2026-05-22 | VSV5265 | - | May 22, 17:40 UTC | May 22, 20:10 UTC | 2h 30m |
| 2026-05-22 | VSV5240 | - | May 22, 06:05 UTC | May 22, 09:00 UTC | 2h 55m |
| 2026-05-21 | VSV5240 | - | May 21, 12:50 UTC | May 22, 09:00 UTC | 20h 10m |
| 2026-05-21 | VSV5240 | - | May 21, 10:50 UTC | May 22, 09:00 UTC | 22h 10m |
| 2026-05-21 | VSV5240 | - | May 21, 10:30 UTC | May 22, 08:45 UTC | 22h 15m |
| 2026-05-20 | VSV5200 | SSH → SSH | May 20, 21:25 UTC | May 21, 07:20 UTC | 9h 55m |
| 2026-05-19 | VSV5263 | - | May 19, 19:10 UTC | May 20, 05:45 UTC | 10h 36m |
| 2026-05-19 | VSV5263 | - | May 19, 08:50 UTC | May 20, 05:45 UTC | 20h 56m |
| 2026-05-19 | VSV5263 | - | May 19, 06:50 UTC | May 20, 05:45 UTC | 22h 56m |
| 2026-05-19 | VSV5263 | - | May 19, 06:15 UTC | May 20, 04:45 UTC | 22h 31m |
| 2026-05-18 | VSV5263 | - | May 18, 23:30 UTC | May 19, 22:35 UTC | 23h 5m |
| 2026-05-18 | VSV5240 | - | May 18, 18:50 UTC | May 19, 08:55 UTC | 14h 5m |
| 2026-05-18 | VSV5240 | - | May 18, 12:55 UTC | May 19, 08:55 UTC | 19h 59m |
| 2026-05-18 | VSV5240 | - | May 18, 11:55 UTC | May 19, 08:55 UTC | 20h 59m |
| 2026-05-18 | VSV5240 | - | May 18, 08:50 UTC | May 19, 08:45 UTC | 23h 54m |
| 2026-05-18 | VSV5291 | ALA → ALA | May 18, 06:55 UTC | May 19, 06:45 UTC | 23h 49m |
| 2026-05-18 | VSV5291 | ALA → ALA | May 18, 06:05 UTC | May 19, 00:45 UTC | 18h 39m |
| 2026-05-17 | VSV5291 | ALA → ALA | May 17, 16:50 UTC | May 18, 13:50 UTC | 21h 0m |
| 2026-05-17 | VSV5291 | ALA → ALA | May 17, 14:50 UTC | May 18, 13:50 UTC | 23h 0m |
| 2026-05-17 | VSV5291 | ALA → ALA | May 17, 14:25 UTC | May 18, 12:20 UTC | 21h 55m |
| 2026-05-17 | VSV5266 | - | May 17, 02:00 UTC | May 17, 05:25 UTC | 3h 25m |
| 2026-05-16 | VSV5265 | - | May 16, 17:50 UTC | May 16, 21:25 UTC | 3h 35m |
| 2026-05-16 | VSV5266 | - | May 16, 01:45 UTC | May 16, 05:25 UTC | 3h 40m |
| 2026-05-15 | VSV5265 | - | May 15, 17:30 UTC | May 15, 21:05 UTC | 3h 35m |
| 2026-05-14 | VSV5240 | - | May 14, 12:50 UTC | May 15, 09:05 UTC | 20h 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 UP-B3726 page for operator, model, and routing details .