Apparatus

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sensors Mode-S transponder

78125F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8997 · AIRBUS A-321

Hex
78125F
Octal
36011137
Decimal
7,869,023
Country
CN
Tail
B-8997
Type
A321
No current signal · last broadcast 12h ago
Flights observed
112
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 78125F.

Country allocation

The ICAO 24-bit address 78125F 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 20 distinct

Callsign Airline Flights Last seen
CSN6346 - 8 2026-07-01
CSN3616 China Southern Airlines 7 2026-05-09
CSN5983 - 5 2026-07-09
CSN5300 - 5 2026-07-09
CSN3906 China Southern Airlines 5 2026-06-07
CSN6274 - 4 2026-07-14
CSN6273 - 4 2026-07-13
CSN6248 China Southern Airlines 4 2026-05-01
CSN5299 - 4 2026-07-09
CSN3744 China Southern Airlines 4 2026-05-31
CSN6256 - 3 2026-06-12
CSN6218 - 3 2026-07-12
CSN6141 - 3 2026-06-23
CSN5101 China Southern Airlines 3 2026-05-29
CSN3743 China Southern Airlines 3 2026-05-23
CSN6220 - 2 2026-07-10
CSN6202 - 2 2026-07-12
CSN5984 - 2 2026-07-11
CSN5919 China Southern Airlines 2 2026-05-29
CSN5102 China Southern Airlines 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN6274 - Jul 14, 09:10 UTCJul 14, 09:25 UTC15m
2026-07-14 CSN6274 - Jul 14, 06:45 UTCJul 14, 07:00 UTC15m
2026-07-13 CSN6273 - Jul 13, 10:50 UTCJul 14, 02:30 UTC15h 40m
2026-07-13 CSN6273 - Jul 13, 06:35 UTCJul 14, 02:30 UTC19h 55m
2026-07-13 CSN6260 - Jul 13, 02:20 UTCJul 13, 10:50 UTC8h 30m
2026-07-12 CSN6202 - Jul 12, 14:50 UTCJul 13, 10:50 UTC20h 0m
2026-07-12 CSN6218 - Jul 12, 08:15 UTCJul 12, 08:30 UTC15m
2026-07-11 CSN5984 - Jul 11, 14:35 UTCJul 11, 14:55 UTC20m
2026-07-10 CSN6220 - Jul 10, 04:25 UTCJul 10, 04:35 UTC10m
2026-07-10 CSN6219 - Jul 10, 02:00 UTCJul 10, 02:10 UTC10m
2026-07-09 CSN5299 - Jul 9, 13:25 UTCJul 9, 13:40 UTC15m
2026-07-09 CSN5300 - Jul 9, 06:10 UTCJul 9, 06:20 UTC10m
2026-07-09 CSN5983 - Jul 9, 01:55 UTCJul 9, 02:10 UTC15m
2026-07-07 CSN5983 - Jul 7, 01:50 UTCJul 7, 06:20 UTC4h 30m
2026-07-06 CSN6274 - Jul 6, 09:30 UTCJul 6, 09:45 UTC15m
2026-07-06 CSN6274 - Jul 6, 07:15 UTCJul 6, 07:25 UTC10m
2026-07-06 CSN6273 - Jul 6, 05:20 UTCJul 6, 05:35 UTC15m
2026-07-06 CSN6273 - Jul 6, 02:40 UTCJul 6, 02:50 UTC10m
2026-07-05 CSN5300 - Jul 5, 06:00 UTCJul 6, 02:50 UTC20h 50m
2026-07-05 CSN5983 - Jul 5, 01:55 UTCJul 5, 06:10 UTC4h 15m
2026-07-01 CSN6346 - Jul 1, 16:50 UTCJul 2, 11:35 UTC18h 45m
2026-07-01 CSN6218 - Jul 1, 08:45 UTCJul 1, 09:00 UTC15m
2026-07-01 CSN6217 - Jul 1, 06:50 UTCJul 1, 07:00 UTC10m
2026-06-29 CSN6346 - Jun 29, 11:39 UTCJun 29, 11:55 UTC15m
2026-06-28 CSN6346 - Jun 28, 11:50 UTCJun 29, 11:45 UTC23h 55m
2026-06-28 CSN6346 - Jun 28, 11:35 UTCJun 28, 11:55 UTC20m
2026-06-26 CSN6346 - Jun 26, 11:14 UTCJun 26, 11:34 UTC20m
2026-06-25 CSN6346 - Jun 25, 14:50 UTCJun 26, 11:34 UTC20h 45m
2026-06-25 CSN6218 - Jun 25, 08:14 UTCJun 25, 08:24 UTC10m
2026-06-25 CSN6204 - Jun 25, 00:55 UTCJun 25, 01:09 UTC15m
2026-06-23 CSN6141 - Jun 23, 01:45 UTCJun 23, 10:59 UTC9h 15m
2026-06-22 CSN6141 - Jun 22, 10:00 UTCJun 23, 01:59 UTC16h 0m
2026-06-22 CSN6141 - Jun 22, 00:24 UTCJun 22, 10:34 UTC10h 10m
2026-06-21 CSN5299 PKX → JHG Jun 21, 12:55 UTCJun 22, 10:34 UTC21h 40m
2026-06-21 CSN5299 PKX → JHG Jun 21, 05:59 UTCJun 22, 01:00 UTC19h 0m
2026-06-21 CSN5299 PKX → JHG Jun 21, 01:49 UTCJun 21, 13:09 UTC11h 20m
2026-06-20 CSN5983 - Jun 20, 01:50 UTCJun 20, 02:04 UTC15m
2026-06-13 CSN5300 JHG → PKX Jun 13, 05:55 UTCJun 13, 06:10 UTC15m
2026-06-13 CSN5983 PKX → HRB Jun 13, 01:45 UTCJun 13, 01:55 UTC10m
2026-06-12 CSN5984 HRB → PKX Jun 12, 14:35 UTCJun 12, 14:50 UTC15m
2026-06-12 CSN6256 - Jun 12, 09:25 UTCJun 12, 09:45 UTC20m
2026-06-11 CSN6256 - Jun 11, 10:40 UTCJun 12, 09:45 UTC23h 6m
2026-06-10 CSN6202 PKX → HRB Jun 10, 14:55 UTCJun 11, 10:50 UTC19h 55m
2026-06-09 CSN6346 CKG → HRB Jun 9, 11:10 UTCJun 9, 11:25 UTC15m
2026-06-07 CSN3906 HRB → CAN Jun 7, 02:00 UTCJun 7, 09:05 UTC7h 5m
2026-06-06 CSN3906 HRB → CAN Jun 6, 04:15 UTCJun 7, 02:25 UTC22h 10m
2026-06-05 CSN6220 PKX → HRB Jun 5, 04:30 UTCJun 5, 04:40 UTC10m
2026-06-04 CSN5300 JHG → PKX Jun 4, 01:55 UTCJun 4, 13:20 UTC11h 25m
2026-06-01 CSN6257 HRB → PVG Jun 1, 00:15 UTCJun 1, 09:25 UTC9h 10m
2026-05-31 CSN3744 SZX → HRB May 31, 09:40 UTCMay 31, 09:55 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-8997 page for operator, model, and routing details .

Mode-S 78125F frequently asked

What is Mode-S code 78125F?
78125F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8997.
Where is Mode-S 78125F registered?
Mode-S code 78125F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78125F 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 78125F, octal 36011137, decimal 7,869,023.
What flights does 78125F operate?
Mode-S 78125F has broadcast 20 distinct callsigns, including CSN6346, CSN3616, CSN5983, CSN5300, CSN3906.