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sensors Mode-S transponder

C81E05

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-OKP · BOEING 777-300ER

Hex
C81E05
Octal
62017005
Decimal
13,114,885
Country
NZ
Tail
ZK-OKP
Type
B77W
No current signal · last broadcast Jul 26, 10:05 UTC
Flights observed
225
Distinct callsigns
20
Country
NZ
Last broadcast
Jul 26, 10:05 UTC

Last known position

Most recent position reported by Mode-S C81E05.

Country allocation

The ICAO 24-bit address C81E05 falls within the block assigned to New Zealand (NZ) by ICAO Annex 10, Volume III. Every aircraft registered in New Zealand 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
ANZ281 Air New Zealand 36 2026-07-26
ANZ282 Air New Zealand 30 2026-07-25
ANZ284 Air New Zealand 24 2026-07-18
ANZ283 Air New Zealand 20 2026-07-19
ANZ6 - 13 2026-07-06
ANZ5 Air New Zealand 13 2026-07-07
ANZ122 - 10 2026-07-15
ANZ121 - 8 2026-07-14
ANZ104 - 7 2026-07-13
ANZ953 - 6 2026-07-19
ANZ24 - 6 2026-07-11
ANZ23 - 6 2026-07-12
ANZ103 - 6 2026-07-12
ANZ146 - 5 2026-06-25
ANZ145 - 5 2026-06-24
ANZ99 Air New Zealand 4 2026-05-22
ANZ90 Air New Zealand 4 2026-05-23
ANZ292 Air New Zealand 4 2026-07-20
ANZ29 - 4 2026-07-16
ANZ28 - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ANZ281 SIN → AKL Jul 26, 07:20 UTCJul 26, 10:05 UTC2h 45m
2026-07-25 ANZ282 AKL → SIN Jul 25, 22:25 UTCJul 25, 22:35 UTC10m
2026-07-25 ANZ282 AKL → SIN Jul 25, 12:10 UTCJul 25, 12:35 UTC25m
2026-07-25 ANZ281 SIN → AKL Jul 25, 07:05 UTCJul 25, 09:40 UTC2h 35m
2026-07-25 ANZ281 SIN → AKL Jul 25, 01:00 UTCJul 25, 01:10 UTC10m
2026-07-24 - - Jul 24, 22:35 UTCJul 24, 22:45 UTC10m
2026-07-24 ANZ282 AKL → SIN Jul 24, 12:15 UTCJul 24, 16:30 UTC4h 15m
2026-07-24 ANZ281 SIN → AKL Jul 24, 07:05 UTCJul 24, 09:45 UTC2h 40m
2026-07-24 ANZ281 SIN → AKL Jul 24, 01:00 UTCJul 24, 01:10 UTC10m
2026-07-23 ANZ282 AKL → SIN Jul 23, 22:30 UTCJul 23, 22:40 UTC10m
2026-07-23 ANZ282 AKL → SIN Jul 23, 12:05 UTCJul 23, 15:55 UTC3h 50m
2026-07-23 ANZ281 SIN → AKL Jul 23, 06:50 UTCJul 23, 09:15 UTC2h 25m
2026-07-23 ANZ281 SIN → AKL Jul 23, 00:55 UTCJul 23, 01:05 UTC10m
2026-07-22 ANZ282 - Jul 22, 22:00 UTCJul 22, 22:10 UTC10m
2026-07-22 ANZ282 - Jul 22, 12:05 UTCJul 22, 15:40 UTC3h 35m
2026-07-21 ANZ282 - Jul 21, 12:20 UTCJul 21, 16:05 UTC3h 45m
2026-07-20 ANZ293 DPS → AKL Jul 20, 10:20 UTCJul 21, 06:30 UTC20h 10m
2026-07-20 ANZ292 AKL → APW Jul 20, 08:20 UTCJul 21, 06:30 UTC22h 10m
2026-07-19 ANZ953 - Jul 19, 23:15 UTCJul 20, 06:10 UTC6h 55m
2026-07-19 ANZ283 SIN → AKL Jul 19, 11:05 UTCJul 19, 20:20 UTC9h 15m
2026-07-18 ANZ284 AKL → SIN Jul 18, 22:35 UTCJul 19, 01:45 UTC3h 10m
2026-07-18 ANZ283 SIN → AKL Jul 18, 17:25 UTCJul 18, 20:20 UTC2h 55m
2026-07-18 ANZ284 AKL → SIN Jul 18, 08:50 UTCJul 18, 09:00 UTC10m
2026-07-17 ANZ284 AKL → SIN Jul 17, 23:10 UTCJul 18, 05:10 UTC6h 1m
2026-07-17 ANZ283 SIN → AKL Jul 17, 20:04 UTCJul 17, 20:25 UTC20m
2026-07-17 ANZ283 SIN → AKL Jul 17, 17:35 UTCJul 17, 18:29 UTC55m
2026-07-17 ANZ283 SIN → AKL Jul 17, 11:10 UTCJul 17, 11:20 UTC10m
2026-07-17 ANZ284 - Jul 17, 07:44 UTCJul 17, 08:10 UTC25m
2026-07-16 ANZ284 - Jul 16, 22:25 UTCJul 17, 01:15 UTC2h 50m
2026-07-16 ANZ29 - Jul 16, 03:45 UTCJul 16, 17:45 UTC14h 0m
2026-07-15 ANZ28 - Jul 15, 08:30 UTCJul 15, 21:30 UTC13h 0m
2026-07-15 ANZ122 - Jul 15, 05:55 UTCJul 15, 06:15 UTC20m
2026-07-15 ANZ122 - Jul 15, 02:55 UTCJul 15, 03:25 UTC30m
2026-07-14 ANZ121 - Jul 14, 21:35 UTCJul 15, 01:00 UTC3h 24m
2026-07-14 ANZ29 - Jul 14, 04:00 UTCJul 14, 18:00 UTC14h 0m
2026-07-13 ANZ28 - Jul 13, 08:05 UTCJul 13, 21:05 UTC13h 0m
2026-07-13 ANZ104 - Jul 13, 04:30 UTCJul 13, 04:45 UTC15m
2026-07-13 ANZ104 - Jul 13, 02:15 UTCJul 13, 02:50 UTC35m
2026-07-12 ANZ103 AKL → SYD Jul 12, 21:15 UTCJul 13, 00:20 UTC3h 5m
2026-07-12 ANZ23 YVR → AKL Jul 12, 04:15 UTCJul 12, 17:10 UTC12h 55m
2026-07-11 ANZ24 - Jul 11, 08:35 UTCJul 11, 20:50 UTC12h 15m
2026-07-10 ANZ993 - Jul 10, 21:55 UTCJul 11, 06:15 UTC8h 20m
2026-07-07 ANZ953 - Jul 7, 22:10 UTCJul 8, 04:50 UTC6h 40m
2026-07-07 ANZ5 LAX → AKL Jul 7, 05:30 UTCJul 7, 17:30 UTC12h 0m
2026-07-06 ANZ6 - Jul 6, 08:30 UTCJul 6, 19:55 UTC11h 25m
2026-07-05 ANZ953 - Jul 5, 22:35 UTCJul 6, 05:35 UTC7h 0m
2026-07-05 ANZ283 SIN → AKL Jul 5, 17:20 UTCJul 5, 20:00 UTC2h 40m
2026-07-05 ANZ283 SIN → AKL Jul 5, 11:10 UTCJul 5, 11:20 UTC10m
2026-07-05 ANZ284 - Jul 5, 08:40 UTCJul 5, 08:50 UTC10m
2026-07-04 ANZ284 - Jul 4, 22:40 UTCJul 5, 01:50 UTC3h 10m

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 ZK-OKP page for operator, model, and routing details .

Mode-S C81E05 frequently asked

What is Mode-S code C81E05?
C81E05 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-OKP.
Where is Mode-S C81E05 registered?
Mode-S code C81E05 is allocated to New Zealand (NZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C81E05 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 C81E05, octal 62017005, decimal 13,114,885.
What flights does C81E05 operate?
Mode-S C81E05 has broadcast 20 distinct callsigns, including ANZ281, ANZ282, ANZ284, ANZ283, ANZ6.