Apparatus

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sensors Mode-S transponder

6831E4

ICAO 24-bit transponder address · allocated to Kazakhstan

Currently assigned to UP-B5703 · BOEING 757-200

Hex
6831E4
Octal
32030744
Decimal
6,828,516
Country
KZ
Tail
UP-B5703
Type
B752
Broadcasting now · callsign VSV5213 · 35,000 ft
Flights observed
129
Distinct callsigns
20
Country
KZ
Last broadcast
Jul 26, 12:10 UTC

Current position

6831E4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 6831E4 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
VSV5212 Scat Air 31 2026-07-23
VSV5210 - 17 2026-07-23
VSV5291 - 15 2026-07-18
VSV5211 - 10 2026-07-20
VSV5292 - 8 2026-07-16
VSV5213 - 5 2026-06-28
VSV3413 - 5 2026-07-07
VSV3412 - 5 2026-07-07
VSV5351 Scat Air 3 2026-05-24
VSV5278 - 3 2026-07-13
VSV5217 - 3 2026-07-08
VSV5335 - 2 2026-04-24
VSV5287 - 2 2026-07-24
VSV5283 - 2 2026-07-25
VSV5273 - 2 2026-07-25
VSV5271 - 2 2026-05-25
VSV3410 - 2 2026-05-18
VSV5343 - 1 2026-05-15
VSV5342 - 1 2026-05-21
VSV5334 Scat Air 1 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VSV5277 AYT → CIT Jul 26, 10:25 UTCJul 26, 12:10 UTC1h 45m
2026-07-25 VSV5273 - Jul 25, 19:50 UTCJul 26, 07:35 UTC11h 46m
2026-07-25 VSV5283 - Jul 25, 07:55 UTCJul 25, 16:05 UTC8h 10m
2026-07-25 VSV5288 - Jul 25, 05:50 UTCJul 25, 06:15 UTC25m
2026-07-24 VSV5287 - Jul 24, 21:35 UTCJul 25, 05:05 UTC7h 30m
2026-07-23 VSV5212 ALA → GOI Jul 23, 11:05 UTCJul 24, 07:50 UTC20h 45m
2026-07-23 VSV5212 ALA → GOI Jul 23, 10:15 UTCJul 24, 07:50 UTC21h 35m
2026-07-23 VSV5210 - Jul 23, 05:35 UTCJul 23, 08:05 UTC2h 30m
2026-07-20 VSV5211 - Jul 20, 06:20 UTCJul 20, 23:35 UTC17h 15m
2026-07-19 VSV5210 - Jul 19, 11:25 UTCJul 20, 04:35 UTC17h 10m
2026-07-19 VSV5212 ALA → GOI Jul 19, 07:05 UTCJul 19, 09:35 UTC2h 30m
2026-07-18 VSV5212 ALA → GOI Jul 18, 13:20 UTCJul 19, 09:35 UTC20h 15m
2026-07-18 VSV5212 ALA → GOI Jul 18, 11:55 UTCJul 19, 09:35 UTC21h 40m
2026-07-18 VSV5291 - Jul 18, 06:40 UTCJul 18, 09:35 UTC2h 55m
2026-07-17 VSV5291 - Jul 17, 11:04 UTCJul 18, 09:35 UTC22h 31m
2026-07-17 VSV5291 - Jul 17, 10:05 UTCJul 18, 09:00 UTC22h 56m
2026-07-17 VSV5212 - Jul 17, 05:35 UTCJul 17, 08:00 UTC2h 25m
2026-07-16 VSV5212 - Jul 16, 09:05 UTCJul 17, 08:00 UTC22h 55m
2026-07-16 VSV5292 - Jul 16, 08:30 UTCJul 17, 06:50 UTC22h 20m
2026-07-16 VSV5291 - Jul 16, 03:00 UTCJul 16, 10:55 UTC7h 55m
2026-07-15 VSV5291 - Jul 15, 13:30 UTCJul 16, 10:55 UTC21h 25m
2026-07-15 VSV5291 - Jul 15, 12:30 UTCJul 16, 10:55 UTC22h 25m
2026-07-14 VSV5275 - Jul 14, 19:45 UTCJul 15, 08:15 UTC12h 29m
2026-07-13 VSV5298 - Jul 13, 22:35 UTCJul 14, 04:30 UTC5h 55m
2026-07-13 VSV5297 - Jul 13, 15:55 UTCJul 13, 20:40 UTC4h 45m
2026-07-13 VSV5278 - Jul 13, 05:50 UTCJul 13, 08:10 UTC2h 20m
2026-07-12 VSV5278 - Jul 12, 11:30 UTCJul 13, 08:10 UTC20h 40m
2026-07-12 VSV5278 - Jul 12, 10:20 UTCJul 13, 08:10 UTC21h 50m
2026-07-11 VSV5273 - Jul 11, 20:15 UTCJul 12, 08:10 UTC11h 55m
2026-07-11 VSV5283 - Jul 11, 07:45 UTCJul 11, 16:00 UTC8h 15m
2026-07-10 VSV5287 - Jul 10, 20:55 UTCJul 11, 04:01 UTC7h 5m
2026-07-10 VSV5212 - Jul 10, 05:35 UTCJul 10, 08:15 UTC2h 40m
2026-07-09 VSV5212 - Jul 9, 11:05 UTCJul 10, 08:15 UTC21h 10m
2026-07-09 VSV5212 - Jul 9, 09:05 UTCJul 10, 08:15 UTC23h 10m
2026-07-09 VSV5292 - Jul 9, 08:50 UTCJul 10, 06:55 UTC22h 5m
2026-07-08 VSV5291 - Jul 8, 17:50 UTCJul 9, 06:10 UTC12h 20m
2026-07-08 VSV5217 - Jul 8, 13:35 UTCJul 8, 16:00 UTC2h 25m
2026-07-07 VSV3413 - Jul 7, 15:05 UTCJul 8, 14:15 UTC23h 10m
2026-07-07 VSV3413 - Jul 7, 13:30 UTCJul 7, 15:50 UTC2h 20m
2026-07-07 VSV3412 - Jul 7, 07:45 UTCJul 7, 10:20 UTC2h 35m
2026-07-06 VSV5211 - Jul 6, 06:10 UTCJul 6, 08:00 UTC1h 50m
2026-07-05 VSV5210 - Jul 5, 11:25 UTCJul 6, 04:20 UTC16h 55m
2026-07-05 VSV5212 - Jul 5, 06:25 UTCJul 5, 08:50 UTC2h 25m
2026-07-04 VSV5212 - Jul 4, 11:05 UTCJul 5, 08:50 UTC21h 45m
2026-07-04 VSV5292 - Jul 4, 10:05 UTCJul 5, 08:50 UTC22h 45m
2026-07-04 VSV5291 - Jul 4, 04:10 UTCJul 4, 07:05 UTC2h 55m
2026-07-03 VSV5291 - Jul 3, 06:25 UTCJul 4, 04:50 UTC22h 25m
2026-07-03 VSV5295 - Jul 3, 00:55 UTCJul 3, 06:35 UTC5h 40m
2026-07-02 VSV5292 - Jul 2, 09:05 UTCJul 3, 06:35 UTC21h 30m
2026-07-02 VSV5292 - Jul 2, 08:45 UTCJul 3, 06:35 UTC21h 50m

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-B5703 page for operator, model, and routing details .

Mode-S 6831E4 frequently asked

What is Mode-S code 6831E4?
6831E4 is an ICAO 24-bit transponder address. Allocated to Kazakhstan. Assigned to UP-B5703.
Where is Mode-S 6831E4 registered?
Mode-S code 6831E4 is allocated to Kazakhstan (KZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 6831E4 broadcasting right now?
Yes. Mode-S 6831E4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 6831E4, octal 32030744, decimal 6,828,516.
What flights does 6831E4 operate?
Mode-S 6831E4 has broadcast 20 distinct callsigns, including VSV5212, VSV5210, VSV5291, VSV5211, VSV5292.