Apparatus

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sensors Mode-S transponder

899125

ICAO 24-bit transponder address · allocated to Taiwan

Currently assigned to B-18908 · AIRBUS A-350-900

Hex
899125
Octal
42310445
Decimal
9,015,589
Country
TW
Tail
B-18908
Type
A359
No current signal · last broadcast 4d ago
Flights observed
176
Distinct callsigns
20
Country
TW
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 899125.

Country allocation

The ICAO 24-bit address 899125 falls within the block assigned to Taiwan (TW) by ICAO Annex 10, Volume III. Every aircraft registered in Taiwan 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
CAL761 - 15 2026-07-13
CAL054 - 12 2026-07-14
CAL053 - 12 2026-07-14
CAL762 - 8 2026-07-13
CAL101 China Airlines 7 2026-07-25
CAL100 China Airlines 7 2026-07-25
CAL082 China Airlines 6 2026-07-18
CAL081 - 6 2026-07-18
CAL062 - 6 2026-07-09
CAL061 - 6 2026-07-08
CAL753 - 5 2026-06-16
CAL074 - 5 2026-07-03
CAL073 China Airlines 5 2026-07-02
CAL052 China Airlines 5 2026-07-24
CAL051 China Airlines 5 2026-07-23
CAL754 - 4 2026-06-16
CAL022 China Airlines 4 2026-07-25
CAL021 China Airlines 4 2026-07-26
CAL784 - 3 2026-06-27
CAL504 China Airlines 3 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CAL021 SEA → TPE Jul 26, 09:00 UTCJul 26, 21:15 UTC12h 15m
2026-07-25 CAL022 TPE → SEA Jul 25, 16:10 UTCJul 26, 02:55 UTC10h 45m
2026-07-25 CAL101 NRT → TPE Jul 25, 08:30 UTCJul 25, 08:50 UTC20m
2026-07-25 CAL101 NRT → TPE Jul 25, 06:00 UTCJul 25, 07:15 UTC1h 15m
2026-07-25 CAL100 TPE → NRT Jul 25, 02:50 UTCJul 25, 04:10 UTC1h 20m
2026-07-25 CAL100 TPE → NRT Jul 25, 01:20 UTCJul 25, 01:35 UTC15m
2026-07-24 CAL052 SYD → TPE Jul 24, 12:20 UTCJul 24, 21:30 UTC9h 10m
2026-07-23 CAL051 TPE → SYD Jul 23, 16:15 UTCJul 24, 00:35 UTC8h 20m
2026-07-23 CAL503 TPE → PVG Jul 23, 09:20 UTCJul 23, 14:05 UTC4h 45m
2026-07-23 CAL157 KIX → TPE Jul 23, 06:35 UTCJul 23, 06:50 UTC15m
2026-07-23 CAL157 KIX → TPE Jul 23, 04:30 UTCJul 23, 06:00 UTC1h 30m
2026-07-23 CAL156 TPE → KIX Jul 23, 01:20 UTCJul 23, 02:50 UTC1h 30m
2026-07-23 CAL156 TPE → KIX Jul 23, 00:35 UTCJul 23, 00:50 UTC15m
2026-07-22 CAL076 FCO → TPE Jul 22, 10:20 UTCJul 22, 21:35 UTC11h 15m
2026-07-21 CAL075 TPE → FCO Jul 21, 16:30 UTCJul 22, 05:25 UTC12h 55m
2026-07-21 CAL105 NRT → TPE Jul 21, 12:10 UTCJul 21, 12:20 UTC10m
2026-07-21 CAL105 NRT → TPE Jul 21, 09:35 UTCJul 21, 10:50 UTC1h 15m
2026-07-21 CAL104 TPE → NRT Jul 21, 06:10 UTCJul 21, 07:35 UTC1h 25m
2026-07-21 CAL104 TPE → NRT Jul 21, 04:40 UTCJul 21, 04:55 UTC15m
2026-07-20 CAL101 NRT → TPE Jul 20, 08:50 UTCJul 20, 09:20 UTC30m
2026-07-20 CAL101 NRT → TPE Jul 20, 06:30 UTCJul 20, 07:45 UTC1h 15m
2026-07-20 CAL100 TPE → NRT Jul 20, 03:10 UTCJul 20, 04:30 UTC1h 20m
2026-07-20 CAL100 TPE → NRT Jul 20, 01:40 UTCJul 20, 02:00 UTC20m
2026-07-18 CAL082 LHR → TPE Jul 18, 20:30 UTCJul 19, 10:00 UTC13h 30m
2026-07-18 CAL081 - Jul 18, 01:25 UTCJul 18, 15:10 UTC13h 46m
2026-07-17 CAL064 - Jul 17, 09:30 UTCJul 17, 21:39 UTC12h 10m
2026-07-16 CAL063 TPE → VIE Jul 16, 16:00 UTCJul 17, 04:20 UTC12h 20m
2026-07-15 CAL082 - Jul 15, 20:50 UTCJul 16, 10:15 UTC13h 25m
2026-07-15 CAL081 - Jul 15, 02:45 UTCJul 15, 16:25 UTC13h 40m
2026-07-14 CAL054 BNE → TPE Jul 14, 13:05 UTCJul 14, 21:40 UTC8h 35m
2026-07-14 CAL054 - Jul 14, 07:50 UTCJul 14, 11:00 UTC3h 10m
2026-07-14 CAL053 BNE → AKL Jul 14, 03:35 UTCJul 14, 06:05 UTC2h 30m
2026-07-13 CAL053 TPE → BNE Jul 13, 16:25 UTCJul 14, 00:30 UTC8h 5m
2026-07-13 CAL762 - Jul 13, 09:45 UTCJul 13, 13:10 UTC3h 25m
2026-07-13 CAL761 - Jul 13, 06:10 UTCJul 13, 06:25 UTC15m
2026-07-13 CAL761 - Jul 13, 01:50 UTCJul 13, 04:45 UTC2h 55m
2026-07-12 CAL153 - Jul 12, 07:55 UTCJul 12, 08:30 UTC35m
2026-07-12 CAL153 - Jul 12, 06:10 UTCJul 12, 06:45 UTC35m
2026-07-12 CAL152 TPE → KIX Jul 12, 01:40 UTCJul 12, 04:01 UTC2h 20m
2026-07-11 CAL762D - Jul 11, 18:25 UTCJul 11, 21:50 UTC3h 25m
2026-07-10 CAL761 - Jul 10, 06:05 UTCJul 10, 06:20 UTC15m
2026-07-10 CAL761 - Jul 10, 01:25 UTCJul 10, 04:35 UTC3h 10m
2026-07-09 CAL062 FRA → TPE Jul 9, 09:40 UTCJul 9, 22:00 UTC12h 20m
2026-07-08 CAL061 - Jul 8, 15:05 UTCJul 9, 04:20 UTC13h 15m
2026-07-07 CAL058 MEL → TPE Jul 7, 14:50 UTCJul 8, 00:00 UTC9h 10m
2026-07-06 CAL057 TPE → MEL Jul 6, 18:10 UTCJul 7, 02:35 UTC8h 25m
2026-07-06 CAL101 NRT → TPE Jul 6, 06:05 UTCJul 6, 09:00 UTC2h 55m
2026-07-06 CAL100 - Jul 6, 02:40 UTCJul 6, 03:55 UTC1h 15m
2026-07-06 CAL100 - Jul 6, 01:10 UTCJul 6, 01:25 UTC15m
2026-07-05 CAL076 - Jul 5, 09:30 UTCJul 5, 21:20 UTC11h 50m

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-18908 page for operator, model, and routing details .

Mode-S 899125 frequently asked

What is Mode-S code 899125?
899125 is an ICAO 24-bit transponder address. Allocated to Taiwan. Assigned to B-18908.
Where is Mode-S 899125 registered?
Mode-S code 899125 is allocated to Taiwan (TW). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 899125 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 899125, octal 42310445, decimal 9,015,589.
What flights does 899125 operate?
Mode-S 899125 has broadcast 20 distinct callsigns, including CAL761, CAL054, CAL053, CAL762, CAL101.