Apparatus

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sensors Mode-S transponder

7812E8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1377 · BOEING 737-800

Hex
7812E8
Octal
36011350
Decimal
7,869,160
Country
CN
Tail
B-1377
Type
B738
No current signal · last broadcast 7h ago
Flights observed
206
Distinct callsigns
20
Country
CN
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 7812E8.

Country allocation

The ICAO 24-bit address 7812E8 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
CSZ9451 - 13 2026-06-25
CSZ9323 - 6 2026-06-23
CSZ8662 - 6 2026-07-05
CSZ8966 - 5 2026-07-07
CSZ8965 - 4 2026-07-07
CSZ8861 Shenzhen Airlines 4 2026-06-21
CSZ8698 - 4 2026-06-26
CSZ8105 - 4 2026-06-13
CSZ9526 - 3 2026-07-07
CSZ9522 Shenzhen Airlines 3 2026-06-06
CSZ9452 - 3 2026-06-25
CSZ9325 - 3 2026-07-08
CSZ9130 - 3 2026-07-04
CSZ8697 Shenzhen Airlines 3 2026-06-07
CSZ8665 - 3 2026-07-04
CSZ8661 Shenzhen Airlines 3 2026-06-07
CSZ8538 - 3 2026-07-11
CSZ9952 - 2 2026-06-30
CSZ9938 - 2 2026-06-18
CSZ9894 - 2 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSZ9159 - Jul 14, 07:20 UTCJul 14, 07:35 UTC15m
2026-07-14 CSZ9151 - Jul 14, 01:25 UTCJul 14, 01:45 UTC20m
2026-07-11 CSZ8538 - Jul 11, 03:45 UTCJul 11, 04:01 UTC15m
2026-07-10 CSZ9803 - Jul 10, 03:00 UTCJul 10, 03:40 UTC40m
2026-07-09 CSZ9850 - Jul 9, 14:45 UTCJul 9, 15:40 UTC55m
2026-07-09 CSZ9849 - Jul 9, 10:30 UTCJul 9, 10:40 UTC10m
2026-07-09 CSZ8664 - Jul 9, 08:50 UTCJul 9, 09:10 UTC20m
2026-07-09 CSZ8663 - Jul 9, 03:40 UTCJul 9, 03:55 UTC15m
2026-07-08 CSZ9325 - Jul 8, 12:00 UTCJul 8, 12:10 UTC10m
2026-07-08 CSZ9302 - Jul 8, 10:20 UTCJul 8, 10:35 UTC15m
2026-07-08 CSZ9301 - Jul 8, 00:15 UTCJul 8, 00:25 UTC10m
2026-07-07 CSZ9526 - Jul 7, 19:35 UTCJul 7, 20:30 UTC55m
2026-07-07 CSZ9525 - Jul 7, 15:05 UTCJul 7, 15:15 UTC10m
2026-07-07 CSZ8966 - Jul 7, 08:10 UTCJul 7, 08:25 UTC15m
2026-07-07 CSZ8965 - Jul 7, 01:20 UTCJul 7, 01:30 UTC10m
2026-07-06 CSZ9132 - Jul 6, 09:15 UTCJul 6, 09:40 UTC25m
2026-07-06 CSZ9131 - Jul 6, 01:05 UTCJul 6, 01:15 UTC10m
2026-07-05 CSZ8662 - Jul 5, 15:45 UTCJul 5, 16:00 UTC15m
2026-07-04 CSZ8665 - Jul 4, 14:20 UTCJul 4, 14:30 UTC10m
2026-07-04 CSZ9130 - Jul 4, 12:35 UTCJul 4, 12:50 UTC15m
2026-07-04 CSZ9129 - Jul 4, 03:40 UTCJul 4, 03:50 UTC10m
2026-07-04 CSZ9814 - Jul 4, 01:10 UTCJul 4, 01:25 UTC15m
2026-07-01 CSZ9807 - Jul 1, 04:25 UTCJul 1, 04:35 UTC10m
2026-07-01 CSZ9816 - Jul 1, 02:40 UTCJul 1, 03:00 UTC20m
2026-06-30 CSZ9104 - Jun 30, 06:45 UTCJun 30, 07:05 UTC20m
2026-06-30 CSZ9103 - Jun 30, 02:10 UTCJun 30, 02:25 UTC15m
2026-06-30 CSZ9952 - Jun 30, 00:09 UTCJun 30, 00:35 UTC25m
2026-06-29 CSZ9894 - Jun 29, 13:54 UTCJun 29, 14:14 UTC20m
2026-06-29 CSZ9893 - Jun 29, 08:54 UTCJun 29, 09:05 UTC10m
2026-06-29 CSZ9514 - Jun 29, 06:14 UTCJun 29, 06:34 UTC20m
2026-06-29 CSZ9513 - Jun 29, 00:34 UTCJun 29, 00:44 UTC10m
2026-06-28 CSZ9892 - Jun 28, 16:00 UTCJun 28, 16:09 UTC10m
2026-06-28 CSZ9891 - Jun 28, 09:05 UTCJun 28, 09:15 UTC10m
2026-06-28 CSZ9329 - Jun 28, 01:25 UTCJun 28, 01:34 UTC10m
2026-06-27 CSZ8662 - Jun 27, 15:49 UTCJun 27, 16:30 UTC40m
2026-06-26 CSZ8698 - Jun 26, 08:30 UTCJun 26, 08:40 UTC10m
2026-06-25 CSZ9894 - Jun 25, 18:50 UTCJun 25, 19:05 UTC15m
2026-06-25 CSZ9452 - Jun 25, 08:09 UTCJun 25, 08:20 UTC10m
2026-06-25 CSZ9451 - Jun 25, 03:29 UTCJun 25, 07:09 UTC3h 40m
2026-06-24 CSZ9208 - Jun 24, 16:40 UTCJun 24, 16:50 UTC10m
2026-06-24 CSZ9207 - Jun 24, 10:35 UTCJun 24, 10:45 UTC10m
2026-06-24 CSZ9804 - Jun 24, 08:09 UTCJun 24, 08:35 UTC25m
2026-06-23 CSZ9815 - Jun 23, 13:19 UTCJun 23, 13:29 UTC10m
2026-06-23 CSZ9323 - Jun 23, 07:40 UTCJun 23, 08:00 UTC20m
2026-06-23 CSZ9330 - Jun 23, 05:24 UTCJun 23, 05:45 UTC20m
2026-06-23 CSZ9329 - Jun 23, 01:04 UTCJun 23, 01:20 UTC15m
2026-06-21 CSZ8861 SZX → KHN Jun 21, 14:19 UTCJun 21, 14:30 UTC10m
2026-06-21 CSZ9323 - Jun 21, 06:50 UTCJun 21, 07:04 UTC15m
2026-06-21 CSZ9957 - Jun 21, 00:55 UTCJun 21, 01:05 UTC10m
2026-06-20 CSZ9888 - Jun 20, 11:25 UTCJun 20, 11:34 UTC10m

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-1377 page for operator, model, and routing details .

Mode-S 7812E8 frequently asked

What is Mode-S code 7812E8?
7812E8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1377.
Where is Mode-S 7812E8 registered?
Mode-S code 7812E8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812E8 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812E8, octal 36011350, decimal 7,869,160.
What flights does 7812E8 operate?
Mode-S 7812E8 has broadcast 20 distinct callsigns, including CSZ9451, CSZ9323, CSZ8662, CSZ8966, CSZ8965.