Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7818F2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30E1 · AIRBUS A-321neo

Hex
7818F2
Octal
36014362
Decimal
7,870,706
Country
CN
Tail
B-30E1
Type
A21N
No current signal · last broadcast Jul 26, 10:05 UTC
Flights observed
129
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 10:05 UTC

Last known position

Most recent position reported by Mode-S 7818F2.

Country allocation

The ICAO 24-bit address 7818F2 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
CSN6148 China Southern Airlines 17 2026-07-25
CSN6758 - 8 2026-07-11
CSN6624 - 8 2026-06-30
CSN3978 China Southern Airlines 7 2026-07-25
CSN6147 - 6 2026-07-14
CSN6782 China Southern Airlines 5 2026-06-15
CSN6762 China Southern Airlines 5 2026-05-06
CSN6740 - 5 2026-06-28
CSN6795 China Southern Airlines 4 2026-06-25
CSN6712 - 4 2026-07-18
CSN6294 China Southern Airlines 4 2026-07-23
CSN3977 China Southern Airlines 4 2026-07-25
CSN8919 China Southern Airlines 3 2026-06-13
CSN6757 China Southern Airlines 3 2026-05-02
CSN6732 - 3 2026-06-22
CSN6228 China Southern Airlines 3 2026-06-20
CSN8920 - 2 2026-06-29
CSN8276 China Southern Airlines 2 2026-06-22
CSN6780 China Southern Airlines 2 2026-04-20
CSN6754 - 2 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CSN6148 HRB → SYX Jul 25, 16:45 UTCJul 26, 10:05 UTC17h 21m
2026-07-25 CSN6148 HRB → SYX Jul 25, 11:15 UTCJul 26, 10:05 UTC22h 51m
2026-07-25 CSN3835 SYX → PVG Jul 25, 05:10 UTCJul 26, 03:00 UTC21h 50m
2026-07-25 CSN3978 SZX → SYX Jul 25, 01:45 UTCJul 25, 16:50 UTC15h 5m
2026-07-25 CSN3977 SYX → SZX Jul 25, 00:05 UTCJul 25, 00:20 UTC15m
2026-07-24 CSN6158 PKX → HAK Jul 24, 16:00 UTCJul 24, 16:10 UTC10m
2026-07-23 CSN6294 KMG → SYX Jul 23, 09:40 UTCJul 23, 15:45 UTC6h 5m
2026-07-22 - - Jul 22, 11:20 UTCJul 23, 09:45 UTC22h 25m
2026-07-21 CSN6294 KMG → SYX Jul 21, 16:20 UTCJul 22, 11:20 UTC19h 0m
2026-07-21 CSN6294 KMG → SYX Jul 21, 12:45 UTCJul 22, 11:20 UTC22h 35m
2026-07-21 CSN6294 KMG → SYX Jul 21, 09:55 UTCJul 21, 16:35 UTC6h 40m
2026-07-18 CSN6712 - Jul 18, 08:10 UTCJul 18, 08:20 UTC10m
2026-07-15 CSN6148 - Jul 15, 05:35 UTCJul 15, 12:25 UTC6h 50m
2026-07-14 CSN6148 - Jul 14, 14:45 UTCJul 15, 12:25 UTC21h 39m
2026-07-14 CSN6147 - Jul 14, 08:40 UTCJul 15, 05:55 UTC21h 14m
2026-07-14 CSN5941 - Jul 14, 00:15 UTCJul 14, 14:50 UTC14h 35m
2026-07-11 CSN6758 - Jul 11, 15:40 UTCJul 11, 15:50 UTC10m
2026-07-08 CSN5941 - Jul 8, 08:30 UTCJul 8, 08:45 UTC15m
2026-07-07 CSN6630 - Jul 7, 12:00 UTCJul 8, 06:05 UTC18h 5m
2026-07-06 CSN6754 - Jul 6, 02:05 UTCJul 6, 07:10 UTC5h 5m
2026-07-05 CSN6148 - Jul 5, 10:45 UTCJul 6, 07:10 UTC20h 25m
2026-07-05 CSN6148 - Jul 5, 06:20 UTCJul 6, 02:30 UTC20h 10m
2026-07-04 CSN3978 - Jul 4, 04:20 UTCJul 4, 04:35 UTC15m
2026-07-03 CSN5691 - Jul 3, 05:25 UTCJul 3, 19:25 UTC14h 0m
2026-07-02 CSN6147 - Jul 2, 14:40 UTCJul 3, 05:40 UTC15h 0m
2026-07-02 CSN6514 - Jul 2, 01:10 UTCJul 2, 14:50 UTC13h 40m
2026-06-30 - - Jun 30, 15:00 UTCJul 1, 00:35 UTC9h 35m
2026-06-30 CSN6624 - Jun 30, 05:55 UTCJul 1, 00:35 UTC18h 40m
2026-06-29 CSN6624 - Jun 29, 13:49 UTCJun 30, 06:15 UTC16h 26m
2026-06-29 CSN6624 - Jun 29, 09:05 UTCJun 30, 06:15 UTC21h 11m
2026-06-29 CSN8920 - Jun 29, 00:05 UTCJun 29, 13:54 UTC13h 50m
2026-06-28 CSN6740 - Jun 28, 16:00 UTCJun 29, 13:54 UTC21h 55m
2026-06-28 CSN6740 - Jun 28, 13:14 UTCJun 29, 09:14 UTC20h 0m
2026-06-28 CSN6583 - Jun 28, 06:24 UTCJun 28, 11:09 UTC4h 45m
2026-06-28 CSN3978 - Jun 28, 01:59 UTCJun 28, 02:49 UTC50m
2026-06-27 CSN6147 - Jun 27, 02:45 UTCJun 27, 12:50 UTC10h 5m
2026-06-26 CSN6740 CAN → SYX Jun 26, 15:10 UTCJun 27, 12:50 UTC21h 40m
2026-06-26 CSN6740 CAN → SYX Jun 26, 12:34 UTCJun 27, 10:05 UTC21h 30m
2026-06-26 CSN6740 CAN → SYX Jun 26, 12:19 UTCJun 27, 10:05 UTC21h 45m
2026-06-26 CSN6584 KMG → SYX Jun 26, 04:45 UTCJun 26, 09:05 UTC4h 20m
2026-06-26 CSN3978 - Jun 26, 01:34 UTCJun 26, 01:45 UTC10m
2026-06-25 CSN6795 SYX → KWE Jun 25, 00:44 UTCJun 25, 12:15 UTC11h 30m
2026-06-24 CSN6795 SYX → KWE Jun 24, 12:34 UTCJun 25, 12:15 UTC23h 40m
2026-06-24 CSN6795 SYX → KWE Jun 24, 07:34 UTCJun 25, 04:29 UTC20h 55m
2026-06-24 CSN6795 SYX → KWE Jun 24, 04:34 UTCJun 25, 04:29 UTC23h 55m
2026-06-24 CSN6700 KMG → SYX Jun 24, 04:05 UTCJun 25, 01:04 UTC21h 0m
2026-06-24 CSN6700 KMG → SYX Jun 24, 00:05 UTCJun 24, 12:34 UTC12h 30m
2026-06-23 CSN6148 - Jun 23, 05:15 UTCJun 23, 12:45 UTC7h 30m
2026-06-22 CSN6148 - Jun 22, 15:45 UTCJun 23, 12:45 UTC21h 0m
2026-06-22 CSN6147 - Jun 22, 12:34 UTCJun 23, 10:10 UTC21h 35m

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-30E1 page for operator, model, and routing details .

Mode-S 7818F2 frequently asked

What is Mode-S code 7818F2?
7818F2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30E1.
Where is Mode-S 7818F2 registered?
Mode-S code 7818F2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7818F2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7818F2, octal 36014362, decimal 7,870,706.
What flights does 7818F2 operate?
Mode-S 7818F2 has broadcast 20 distinct callsigns, including CSN6148, CSN6758, CSN6624, CSN3978, CSN6147.