Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7BB0BF

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2697 · BOEING 737-800

Hex
7BB0BF
Octal
36730277
Decimal
8,106,175
Country
CN
Tail
B-2697
Type
B738
No current signal · last broadcast 1d ago
Flights observed
35
Distinct callsigns
15
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7BB0BF.

Country allocation

The ICAO 24-bit address 7BB0BF falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 15 distinct

Callsign Airline Flights Last seen
CSN6336 China Southern Airlines 6 2026-06-01
CSN6478 China Southern Airlines 5 2026-06-02
CSN6335 China Southern Airlines 5 2026-06-01
CSN6390 China Southern Airlines 3 2026-05-20
CSN8569 China Southern Airlines 2 2026-05-06
CSN6477 China Southern Airlines 2 2026-05-04
CSN6389 China Southern Airlines 2 2026-06-01
CSN3976 China Southern Airlines 2 2026-05-13
CSN3975 China Southern Airlines 2 2026-05-13
CSN8685 China Southern Airlines 1 2026-05-01
CSN6490 China Southern Airlines 1 2026-05-06
CSN6489 China Southern Airlines 1 2026-05-06
CSN3981 China Southern Airlines 1 2026-04-18
CSN3973 China Southern Airlines 1 2026-05-30
CSN3800 China Southern Airlines 1 2026-04-20

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-06-02 CSN6478 SZX → CGO Jun 2, 06:05 UTCJun 2, 06:15 UTC10m
2026-06-01 CSN6389 SZX → CGO Jun 1, 10:20 UTCJun 1, 10:35 UTC15m
2026-06-01 CSN6336 SZX → CGO Jun 1, 03:15 UTCJun 1, 03:25 UTC10m
2026-06-01 CSN6335 CGO → SZX Jun 1, 01:05 UTCJun 1, 01:25 UTC20m
2026-05-30 CSN3973 CGO → SZX May 30, 12:25 UTCMay 30, 12:45 UTC20m
2026-05-20 CSN6478 SZX → CGO May 20, 06:15 UTCMay 20, 06:25 UTC10m
2026-05-20 CSN6390 CGO → SZX May 20, 04:00 UTCMay 20, 04:15 UTC15m
2026-05-17 CSN6336 SZX → CGO May 17, 03:20 UTCMay 17, 03:30 UTC10m
2026-05-17 CSN6335 CGO → SZX May 17, 01:05 UTCMay 17, 01:25 UTC20m
2026-05-13 CSN3976 SZX → CGO May 13, 04:50 UTCMay 13, 05:00 UTC10m
2026-05-13 CSN3975 CGO → SZX May 13, 03:00 UTCMay 13, 03:20 UTC20m
2026-05-10 CSN6478 SZX → CGO May 10, 06:00 UTCMay 10, 06:10 UTC10m
2026-05-10 CSN6390 CGO → SZX May 10, 03:50 UTCMay 10, 04:09 UTC20m
2026-05-08 CSN6336 SZX → CGO May 8, 03:19 UTCMay 8, 03:35 UTC15m
2026-05-06 CSN8569 CGO → SHE May 6, 08:35 UTCMay 6, 08:45 UTC10m
2026-05-06 CSN6490 ZUH → CGO May 6, 04:00 UTCMay 6, 04:10 UTC10m
2026-05-06 CSN6489 CGO → ZUH May 6, 02:10 UTCMay 6, 02:25 UTC15m
2026-05-05 CSN6478 SZX → CGO May 5, 06:05 UTCMay 5, 06:20 UTC15m
2026-05-05 CSN6390 CGO → SZX May 5, 03:55 UTCMay 5, 04:05 UTC10m
2026-05-04 CSN6477 CGO → SZX May 4, 08:25 UTCMay 4, 08:50 UTC25m
2026-05-01 CSN8685 CGO → CAN May 1, 02:50 UTCMay 1, 03:00 UTC10m
2026-04-29 CSN6478 SZX → CGO Apr 29, 08:30 UTCApr 29, 08:45 UTC15m
2026-04-28 CSN6389 SZX → CGO Apr 28, 10:20 UTCApr 28, 10:35 UTC15m
2026-04-28 CSN6477 CGO → SZX Apr 28, 08:30 UTCApr 28, 09:00 UTC30m
2026-04-28 CSN6336 SZX → CGO Apr 28, 03:20 UTCApr 28, 03:35 UTC15m
2026-04-28 CSN6335 CGO → SZX Apr 28, 01:00 UTCApr 28, 01:20 UTC20m
2026-04-26 CSN8569 CGO → SHE Apr 26, 08:40 UTCApr 26, 08:50 UTC10m
2026-04-26 CSN6336 SZX → CGO Apr 26, 03:05 UTCApr 26, 03:15 UTC10m
2026-04-26 CSN6335 CGO → SZX Apr 26, 00:55 UTCApr 26, 01:25 UTC30m
2026-04-24 CSN6336 SZX → CGO Apr 24, 03:35 UTCApr 24, 03:45 UTC10m
2026-04-24 CSN6335 CGO → SZX Apr 24, 01:30 UTCApr 24, 01:55 UTC25m
2026-04-20 CSN3800 TAO → CAN Apr 20, 13:00 UTCApr 20, 13:15 UTC15m
2026-04-18 CSN3981 CGO → SYX Apr 18, 02:35 UTCApr 18, 02:55 UTC20m
2026-04-15 CSN3976 SZX → CGO Apr 15, 05:25 UTCApr 15, 05:40 UTC15m
2026-04-15 CSN3975 CGO → SZX Apr 15, 03:20 UTCApr 15, 03:35 UTC15m

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 B-2697 page for operator, model, and routing details .

Mode-S 7BB0BF frequently asked

What is Mode-S code 7BB0BF?
7BB0BF is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2697.
Where is Mode-S 7BB0BF registered?
Mode-S code 7BB0BF is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7BB0BF broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7BB0BF, octal 36730277, decimal 8,106,175.
What flights does 7BB0BF operate?
Mode-S 7BB0BF has broadcast 15 distinct callsigns, including CSN6336, CSN6478, CSN6335, CSN6390, CSN8569.