Apparatus

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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
Broadcasting now · callsign ANZ284 · 32,000 ft
Flights observed
102
Distinct callsigns
20
Country
NZ
Last broadcast
2h ago

Current position

C81E05 is currently broadcasting. Map zoomed to live position.

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 21 2026-04-30
ANZ282 Air New Zealand 16 2026-04-29
ANZ284 Air New Zealand 9 2026-05-29
ANZ6 Air New Zealand 6 2026-05-28
ANZ5 Air New Zealand 6 2026-05-29
ANZ283 Air New Zealand 6 2026-05-25
ANZ99 Air New Zealand 4 2026-05-22
ANZ90 Air New Zealand 4 2026-05-23
ANZ104 Air New Zealand 4 2026-05-10
ANZ103 Air New Zealand 4 2026-05-09
ANZ24 Air New Zealand 3 2026-05-26
ANZ23 Air New Zealand 3 2026-05-27
ANZ122 Air New Zealand 3 2026-05-28
ANZ121 Air New Zealand 3 2026-05-27
ANZ945 Air New Zealand 2 2026-05-05
ANZ953 Air New Zealand 1 2026-05-25
ANZ946 Air New Zealand 1 2026-05-15
ANZ291 Air New Zealand 1 2026-05-23
ANZ290 Air New Zealand 1 2026-05-21
ANZ29 Air New Zealand 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ANZ284 AKL → SIN May 29, 22:25 UTCMay 29, 22:45 UTC20m
2026-05-29 ANZ5 LAX → AKL May 29, 05:50 UTCMay 29, 18:15 UTC12h 25m
2026-05-28 ANZ6 AKL → LAX May 28, 08:55 UTCMay 28, 20:10 UTC11h 15m
2026-05-28 ANZ122 MEL → AKL May 28, 02:30 UTCMay 28, 05:40 UTC3h 10m
2026-05-27 ANZ121 AKL → MEL May 27, 21:15 UTCMay 28, 00:40 UTC3h 25m
2026-05-27 ANZ23 YVR → AKL May 27, 04:14 UTCMay 27, 17:15 UTC13h 1m
2026-05-26 ANZ24 AKL → YVR May 26, 08:24 UTCMay 26, 21:04 UTC12h 40m
2026-05-25 ANZ953 NAN → AKL May 25, 22:25 UTCMay 26, 05:20 UTC6h 55m
2026-05-25 ANZ283 SIN → AKL May 25, 17:15 UTCMay 25, 19:59 UTC2h 44m
2026-05-23 ANZ291 DPS → AKL May 23, 23:25 UTCMay 24, 17:05 UTC17h 40m
2026-05-23 ANZ90 NRT → AKL May 23, 11:20 UTCMay 23, 21:15 UTC9h 55m
2026-05-22 ANZ99 AKL → NRT May 22, 22:40 UTCMay 23, 09:05 UTC10h 24m
2026-05-21 ANZ290 AKL → DPS May 21, 23:30 UTCMay 22, 17:35 UTC18h 5m
2026-05-21 ANZ90 NRT → AKL May 21, 11:45 UTCMay 21, 21:25 UTC9h 40m
2026-05-20 ANZ99 AKL → NRT May 20, 23:05 UTCMay 21, 09:35 UTC10h 30m
2026-05-20 ANZ283 SIN → AKL May 20, 18:00 UTCMay 20, 20:45 UTC2h 45m
2026-05-20 ANZ284 AKL → SIN May 20, 09:50 UTCMay 20, 10:00 UTC10m
2026-05-19 ANZ284 AKL → SIN May 19, 23:35 UTCMay 20, 02:45 UTC3h 10m
2026-05-19 ANZ90 NRT → AKL May 19, 11:20 UTCMay 19, 21:30 UTC10h 10m
2026-05-18 ANZ99 AKL → NRT May 18, 22:35 UTCMay 19, 08:40 UTC10h 5m
2026-05-18 ANZ283 SIN → AKL May 18, 17:20 UTCMay 18, 20:20 UTC2h 59m
2026-05-17 ANZ284 AKL → SIN May 17, 22:35 UTCMay 18, 01:35 UTC3h 0m
2026-05-17 ANZ29 IAH → AKL May 17, 03:15 UTCMay 17, 17:25 UTC14h 10m
2026-05-16 ANZ28 AKL → IAH May 16, 08:31 UTCMay 16, 21:15 UTC12h 45m
2026-05-15 ANZ946 AKL → RAR May 15, 21:05 UTCMay 16, 06:01 UTC8h 56m
2026-05-15 ANZ23 YVR → AKL May 15, 04:40 UTCMay 15, 18:20 UTC13h 39m
2026-05-14 ANZ24 AKL → YVR May 14, 08:20 UTCMay 14, 20:20 UTC12h 0m
2026-05-14 ANZ122 MEL → AKL May 14, 02:25 UTCMay 14, 05:45 UTC3h 20m
2026-05-13 ANZ121 AKL → MEL May 13, 21:10 UTCMay 14, 00:25 UTC3h 15m
2026-05-13 ANZ23 YVR → AKL May 13, 04:10 UTCMay 13, 17:25 UTC13h 15m
2026-05-12 ANZ24 AKL → YVR May 12, 08:50 UTCMay 12, 21:25 UTC12h 35m
2026-05-12 ANZ122 MEL → AKL May 12, 05:20 UTCMay 12, 05:40 UTC20m
2026-05-11 ANZ121 AKL → MEL May 11, 21:10 UTCMay 12, 02:55 UTC5h 45m
2026-05-11 ANZ5 LAX → AKL May 11, 05:20 UTCMay 11, 17:35 UTC12h 16m
2026-05-10 ANZ6 AKL → LAX May 10, 08:45 UTCMay 10, 20:14 UTC11h 30m
2026-05-10 ANZ104 SYD → AKL May 10, 02:14 UTCMay 10, 05:00 UTC2h 45m
2026-05-09 ANZ103 AKL → SYD May 9, 21:40 UTCMay 10, 00:30 UTC2h 50m
2026-05-09 ANZ5 LAX → AKL May 9, 05:30 UTCMay 9, 17:40 UTC12h 10m
2026-05-08 ANZ6 AKL → LAX May 8, 09:04 UTCMay 8, 21:15 UTC12h 10m
2026-05-05 ANZ945 RAR → AKL May 5, 21:05 UTCMay 6, 06:05 UTC8h 59m
2026-05-05 ANZ5 LAX → AKL May 5, 05:25 UTCMay 5, 17:35 UTC12h 10m
2026-05-04 ANZ6 AKL → LAX May 4, 08:45 UTCMay 4, 20:10 UTC11h 26m
2026-05-03 ANZ90 NRT → AKL May 3, 11:25 UTCMay 3, 21:29 UTC10h 5m
2026-05-02 ANZ99 AKL → NRT May 2, 22:30 UTCMay 3, 08:50 UTC10h 19m
2026-05-02 ANZ5 LAX → AKL May 2, 05:40 UTCMay 2, 18:05 UTC12h 25m
2026-05-01 ANZ6 AKL → LAX May 1, 08:45 UTCMay 1, 19:50 UTC11h 5m
2026-05-01 ANZ104 SYD → AKL May 1, 02:50 UTCMay 1, 05:40 UTC2h 50m
2026-04-30 ANZ103 AKL → SYD Apr 30, 21:35 UTCMay 1, 00:25 UTC2h 50m
2026-04-30 ANZ281 SIN → AKL Apr 30, 01:10 UTCApr 30, 10:25 UTC9h 15m
2026-04-29 ANZ282 AKL → SIN Apr 29, 22:40 UTCApr 29, 22:50 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 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?
Yes. Mode-S C81E05 is currently airborne.
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, ANZ6, ANZ5.