Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 ANZ29 · 30,000 ft
Flights observed
190
Distinct callsigns
20
Country
NZ
Last broadcast
7h 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 - 29 2026-06-20
ANZ282 Air New Zealand 22 2026-06-19
ANZ284 - 19 2026-07-05
ANZ283 Air New Zealand 15 2026-07-05
ANZ6 - 13 2026-07-06
ANZ5 Air New Zealand 13 2026-07-07
ANZ122 - 8 2026-06-29
ANZ121 - 7 2026-06-28
ANZ104 - 7 2026-07-13
ANZ24 - 6 2026-07-11
ANZ23 - 6 2026-07-12
ANZ103 - 6 2026-07-12
ANZ953 - 5 2026-07-07
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
ANZ945 Air New Zealand 3 2026-06-02
ANZ292 - 3 2026-06-25
ANZ28 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-04 ANZ283 SIN → AKL Jul 4, 17:40 UTCJul 4, 20:25 UTC2h 45m
2026-07-03 ANZ284 - Jul 3, 22:45 UTCJul 4, 02:05 UTC3h 20m
2026-07-03 ANZ283 SIN → AKL Jul 3, 17:10 UTCJul 3, 19:45 UTC2h 35m
2026-07-03 ANZ284 - Jul 3, 08:55 UTCJul 3, 09:05 UTC10m
2026-07-02 ANZ284 - Jul 2, 22:20 UTCJul 3, 02:00 UTC3h 40m
2026-07-02 ANZ5 LAX → AKL Jul 2, 05:30 UTCJul 2, 17:30 UTC12h 0m
2026-07-01 ANZ6 - Jul 1, 09:15 UTCJul 1, 20:40 UTC11h 25m
2026-06-30 ANZ971 - Jun 30, 23:10 UTCJul 1, 06:15 UTC7h 5m
2026-06-30 ANZ5 LAX → AKL Jun 30, 05:40 UTCJun 30, 18:00 UTC12h 20m
2026-06-29 ANZ6 - Jun 29, 08:50 UTCJun 29, 20:24 UTC11h 35m
2026-06-29 ANZ122 - Jun 29, 05:30 UTCJun 29, 05:54 UTC25m
2026-06-29 ANZ122 - Jun 29, 02:50 UTCJun 29, 03:14 UTC25m
2026-06-28 ANZ121 - Jun 28, 21:45 UTCJun 29, 01:00 UTC3h 15m
2026-06-28 ANZ122 - Jun 28, 02:20 UTCJun 28, 05:34 UTC3h 15m
2026-06-27 ANZ121 - Jun 27, 21:15 UTCJun 28, 00:30 UTC3h 15m
2026-06-27 ANZ5 LAX → AKL Jun 27, 05:29 UTCJun 27, 17:34 UTC12h 5m
2026-06-26 ANZ6 - Jun 26, 10:25 UTCJun 26, 21:55 UTC11h 30m
2026-06-25 ANZ292 - Jun 25, 11:19 UTCJun 26, 06:19 UTC19h 0m
2026-06-25 ANZ292 - Jun 25, 11:04 UTCJun 26, 06:19 UTC19h 15m
2026-06-25 ANZ292 - Jun 25, 08:24 UTCJun 26, 06:19 UTC21h 55m
2026-06-25 ANZ146 BNE → AKL Jun 25, 03:34 UTCJun 25, 06:05 UTC2h 30m
2026-06-24 ANZ145 - Jun 24, 21:34 UTCJun 25, 00:49 UTC3h 15m
2026-06-24 ANZ23 YVR → AKL Jun 24, 04:10 UTCJun 24, 17:20 UTC13h 10m
2026-06-23 ANZ24 - Jun 23, 08:54 UTCJun 23, 21:05 UTC12h 10m
2026-06-22 ANZ953 - Jun 22, 22:15 UTCJun 23, 05:04 UTC6h 50m
2026-06-22 ANZ283 SIN → AKL Jun 22, 17:15 UTCJun 22, 19:54 UTC2h 40m
2026-06-22 ANZ283 SIN → AKL Jun 22, 11:09 UTCJun 22, 11:19 UTC10m
2026-06-22 ANZ284 - Jun 22, 00:55 UTCJun 22, 05:10 UTC4h 15m
2026-06-21 ANZ284 - Jun 21, 22:40 UTCJun 21, 22:54 UTC15m
2026-06-21 ANZ284 - Jun 21, 01:35 UTCJun 21, 20:14 UTC18h 40m
2026-06-20 ANZ284 - Jun 20, 22:35 UTCJun 21, 20:14 UTC21h 40m
2026-06-20 ANZ281 - Jun 20, 09:44 UTCJun 20, 10:09 UTC25m
2026-06-20 ANZ281 - Jun 20, 07:34 UTCJun 20, 08:25 UTC50m
2026-06-19 ANZ282 AKL → SIN Jun 19, 12:49 UTCJun 19, 16:49 UTC4h 0m
2026-06-19 ANZ122 MEL → AKL Jun 19, 02:39 UTCJun 19, 05:30 UTC2h 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 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, ANZ283, ANZ6.