Apparatus

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sensors Mode-S transponder

7817B6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30AK · AIRBUS A-320neo

Hex
7817B6
Octal
36013666
Decimal
7,870,390
Country
CN
Tail
B-30AK
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
119
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7817B6.

Country allocation

The ICAO 24-bit address 7817B6 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
CSN6966 - 18 2026-07-03
CSN6300 - 13 2026-07-07
CSN6299 - 13 2026-07-07
CSN696 - 7 2026-07-05
CSN695 - 7 2026-07-05
CSN676 - 7 2026-07-07
CSN675 - 7 2026-07-07
CSN6327 - 7 2026-07-10
CSN6326 - 7 2026-07-13
CSN6325 - 7 2026-07-13
CSN6328 - 4 2026-07-10
CSN6435 - 3 2026-07-08
CSN6965 China Southern Airlines 2 2026-06-26
CSN630 - 2 2026-04-17
CSN629 - 2 2026-04-17
CSN5721 - 2 2026-06-24
CSN8622 - 1 2026-06-26
CSN8578 China Southern Airlines 1 2026-06-05
CSN8577 China Southern Airlines 1 2026-06-04
CSN696A - 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CSN2715 - Jul 13, 11:25 UTCJul 13, 14:30 UTC3h 5m
2026-07-13 CSN6326 - Jul 13, 06:05 UTCJul 13, 06:15 UTC10m
2026-07-13 CSN6325 - Jul 13, 03:55 UTCJul 13, 04:25 UTC30m
2026-07-10 CSN6328 - Jul 10, 12:20 UTCJul 10, 12:35 UTC15m
2026-07-10 CSN6327 - Jul 10, 10:05 UTCJul 10, 10:30 UTC25m
2026-07-08 CSN6436 - Jul 8, 13:45 UTCJul 9, 07:25 UTC17h 40m
2026-07-08 CSN6435 - Jul 8, 07:50 UTCJul 9, 07:25 UTC23h 35m
2026-07-07 CSN676 - Jul 7, 15:55 UTCJul 7, 16:20 UTC25m
2026-07-07 CSN675 - Jul 7, 13:50 UTCJul 7, 14:15 UTC25m
2026-07-07 CSN6300 - Jul 7, 08:55 UTCJul 7, 09:05 UTC10m
2026-07-07 CSN6299 - Jul 7, 03:15 UTCJul 7, 03:35 UTC20m
2026-07-05 CSN676 - Jul 5, 14:05 UTCJul 5, 14:30 UTC25m
2026-07-05 CSN675 - Jul 5, 11:50 UTCJul 5, 12:10 UTC20m
2026-07-05 CSN696 - Jul 5, 08:35 UTCJul 5, 09:00 UTC25m
2026-07-05 CSN695 - Jul 5, 06:35 UTCJul 5, 07:05 UTC30m
2026-07-04 CSN6435 - Jul 4, 07:45 UTCJul 4, 13:40 UTC5h 55m
2026-07-03 CSN6966 - Jul 3, 14:15 UTCJul 4, 07:50 UTC17h 35m
2026-07-03 CSN6966 - Jul 3, 06:00 UTCJul 3, 14:45 UTC8h 45m
2026-07-02 CSN6433 - Jul 2, 01:10 UTCJul 2, 01:20 UTC10m
2026-07-01 CSN6300 - Jul 1, 04:10 UTCJul 1, 04:20 UTC10m
2026-07-01 CSN6299 - Jul 1, 02:20 UTCJul 1, 02:40 UTC20m
2026-06-30 CSN6966 - Jun 30, 06:00 UTCJun 30, 15:35 UTC9h 35m
2026-06-29 CSN696 - Jun 29, 08:29 UTCJun 29, 08:44 UTC15m
2026-06-29 CSN695 - Jun 29, 06:34 UTCJun 29, 07:05 UTC30m
2026-06-28 CSN6966 - Jun 28, 05:55 UTCJun 28, 14:54 UTC9h 0m
2026-06-27 CSN6966 - Jun 27, 14:25 UTCJun 28, 05:55 UTC15h 30m
2026-06-27 CSN6966 - Jun 27, 05:55 UTCJun 27, 14:54 UTC9h 0m
2026-06-26 CSN6965 XIY → URC Jun 26, 11:55 UTCJun 27, 06:05 UTC18h 10m
2026-06-26 CSN8622 - Jun 26, 03:00 UTCJun 26, 12:00 UTC9h 0m
2026-06-25 CSN6966 URC → XIY Jun 25, 14:24 UTCJun 26, 12:00 UTC21h 35m
2026-06-25 CSN6966 URC → XIY Jun 25, 06:00 UTCJun 26, 03:00 UTC21h 0m
2026-06-24 CSN5721 - Jun 24, 09:15 UTCJun 25, 06:09 UTC20h 55m
2026-06-23 CSN6966 URC → XIY Jun 23, 14:29 UTCJun 24, 09:24 UTC18h 55m
2026-06-23 CSN6966 URC → XIY Jun 23, 06:09 UTCJun 23, 14:55 UTC8h 45m
2026-06-21 CSN6300 - Jun 21, 04:20 UTCJun 21, 04:30 UTC10m
2026-06-21 CSN6299 - Jun 21, 02:24 UTCJun 21, 02:35 UTC10m
2026-06-20 CSN6966 URC → XIY Jun 20, 05:59 UTCJun 20, 14:19 UTC8h 20m
2026-06-17 CSN6327 - Jun 17, 10:35 UTCJun 17, 10:50 UTC15m
2026-06-15 CSN6300 - Jun 15, 06:20 UTCJun 15, 06:30 UTC10m
2026-06-15 CSN6299 - Jun 15, 02:10 UTCJun 15, 02:35 UTC25m
2026-06-14 CSN696 ICN → DLC Jun 14, 08:30 UTCJun 14, 08:50 UTC20m
2026-06-14 CSN695 - Jun 14, 06:45 UTCJun 14, 07:10 UTC25m
2026-06-13 CSN6435 - Jun 13, 07:30 UTCJun 13, 07:50 UTC20m
2026-06-10 CSN676 - Jun 10, 13:55 UTCJun 10, 14:15 UTC20m
2026-06-10 CSN675 - Jun 10, 12:00 UTCJun 10, 12:20 UTC20m
2026-06-10 CSN696 ICN → DLC Jun 10, 08:40 UTCJun 10, 09:05 UTC25m
2026-06-10 CSN695 DLC → ICN Jun 10, 07:00 UTCJun 10, 07:20 UTC20m
2026-06-08 CSN6965 XIY → URC Jun 8, 05:55 UTCJun 8, 14:55 UTC9h 0m
2026-06-05 CSN6300 SZX → DLC Jun 5, 04:50 UTCJun 5, 05:00 UTC10m
2026-06-05 CSN8578 WUH → SZX Jun 5, 01:25 UTCJun 5, 01:45 UTC20m

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-30AK page for operator, model, and routing details .

Mode-S 7817B6 frequently asked

What is Mode-S code 7817B6?
7817B6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AK.
Where is Mode-S 7817B6 registered?
Mode-S code 7817B6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817B6 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 7817B6, octal 36013666, decimal 7,870,390.
What flights does 7817B6 operate?
Mode-S 7817B6 has broadcast 20 distinct callsigns, including CSN6966, CSN6300, CSN6299, CSN696, CSN695.