sensors Mode-S transponder

06A30B

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-BFX · BOEING 777-200LR

Hex
06A30B
Octal
01521413
Decimal
434,955
Country
QA
Tail
A7-BFX
Type
B77L
No current signal · last broadcast 12h ago
Flights observed
12
Distinct callsigns
3
Country
QA
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 06A30B.

Country allocation

The ICAO 24-bit address 06A30B falls within the block assigned to Qatar (QA) by ICAO Annex 10, Volume III. Every aircraft registered in Qatar 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 3 distinct

Callsign Airline Flights Last seen
QTR8143 - 7 2026-04-13
QTR8953 Qatar Airways 3 2026-04-13
QTR91Y - 2 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 QTR91Y - Apr 14, 09:50 UTCApr 14, 11:05 UTC1h 15m
2026-04-14 QTR91Y - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 QTR8143 - Apr 13, 16:15 UTCApr 13, 17:30 UTC1h 15m
2026-04-13 QTR8143 - Apr 13, 15:50 UTCApr 13, 17:30 UTC1h 40m
2026-04-13 QTR8143 - Apr 13, 15:40 UTCApr 13, 16:15 UTC35m
2026-04-13 QTR8143 - Apr 13, 12:20 UTCApr 13, 13:05 UTC45m
2026-04-13 QTR8143 - Apr 13, 11:55 UTCApr 13, 13:05 UTC1h 10m
2026-04-13 QTR8143 - Apr 13, 09:25 UTCApr 13, 12:15 UTC2h 50m
2026-04-13 QTR8143 - Apr 13, 06:25 UTCApr 13, 07:05 UTC40m
2026-04-13 QTR8953 HAN → DOH Apr 13, 00:25 UTCApr 13, 01:00 UTC35m
2026-04-12 QTR8953 HAN → DOH Apr 12, 23:55 UTCApr 13, 01:00 UTC1h 5m
2026-04-12 QTR8953 HAN → DOH Apr 12, 18:55 UTCApr 12, 20:15 UTC1h 20m

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 A7-BFX page for operator, model, and routing details .

Mode-S 06A30B frequently asked

What is Mode-S code 06A30B?
06A30B is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BFX.
Where is Mode-S 06A30B registered?
Mode-S code 06A30B is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A30B broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A30B, octal 01521413, decimal 434,955.
What flights does 06A30B operate?
Mode-S 06A30B has broadcast 3 distinct callsigns, including QTR8143, QTR8953, QTR91Y.