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sensors Mode-S transponder

C81D7E

ICAO 24-bit transponder address · allocated to New Zealand

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

Hex
C81D7E
Octal
62016576
Decimal
13,114,750
Country
NZ
Tail
ZK-OKM
Type
B77W
No current signal · last broadcast Jul 26, 11:40 UTC
Flights observed
170
Distinct callsigns
20
Country
NZ
Last broadcast
Jul 26, 11:40 UTC

Last known position

Most recent position reported by Mode-S C81D7E.

Country allocation

The ICAO 24-bit address C81D7E 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
ANZ284 Air New Zealand 20 2026-07-23
ANZ283 Air New Zealand 20 2026-07-23
ANZ281 Air New Zealand 13 2026-05-23
ANZ6 Air New Zealand 12 2026-07-26
ANZ282 Air New Zealand 12 2026-05-22
ANZ5 Air New Zealand 10 2026-07-25
ANZ24 - 8 2026-07-12
ANZ23 - 8 2026-07-13
ANZ122 Air New Zealand 7 2026-07-26
ANZ121 Air New Zealand 6 2026-07-25
ANZ953 Air New Zealand 5 2026-07-23
ANZ90 Air New Zealand 5 2026-05-17
ANZ99 Air New Zealand 4 2026-05-16
ANZ945 Air New Zealand 4 2026-07-18
ANZ903 Air New Zealand 4 2026-05-01
ANZ104 - 4 2026-06-27
ANZ103 - 4 2026-06-26
ANZ291 Air New Zealand 3 2026-05-17
ANZ146 - 3 2026-07-05
ANZ145 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ANZ6 AKL → LAX Jul 26, 11:15 UTCJul 26, 11:40 UTC25m
2026-07-26 ANZ122 MEL → AKL Jul 26, 05:25 UTCJul 26, 05:50 UTC25m
2026-07-26 ANZ122 MEL → AKL Jul 26, 02:50 UTCJul 26, 03:20 UTC30m
2026-07-25 ANZ121 AKL → MEL Jul 25, 21:15 UTCJul 26, 00:55 UTC3h 40m
2026-07-25 ANZ5 LAX → AKL Jul 25, 06:00 UTCJul 25, 18:10 UTC12h 10m
2026-07-24 ANZ6 AKL → LAX Jul 24, 08:35 UTCJul 24, 20:15 UTC11h 40m
2026-07-23 ANZ953 NAN → AKL Jul 23, 23:15 UTCJul 24, 06:00 UTC6h 45m
2026-07-23 ANZ283 SIN → AKL Jul 23, 18:25 UTCJul 23, 21:05 UTC2h 40m
2026-07-23 ANZ283 SIN → AKL Jul 23, 12:40 UTCJul 23, 12:50 UTC10m
2026-07-23 ANZ284 AKL → SIN Jul 23, 09:55 UTCJul 23, 10:05 UTC10m
2026-07-22 ANZ284 AKL → SIN Jul 22, 23:40 UTCJul 23, 03:20 UTC3h 40m
2026-07-22 ANZ283 SIN → AKL Jul 22, 17:20 UTCJul 22, 20:05 UTC2h 45m
2026-07-22 ANZ284 AKL → SIN Jul 22, 11:20 UTCJul 22, 11:35 UTC15m
2026-07-21 ANZ284 AKL → SIN Jul 21, 22:40 UTCJul 22, 02:30 UTC3h 50m
2026-07-21 ANZ5 LAX → AKL Jul 21, 05:30 UTCJul 21, 17:25 UTC11h 55m
2026-07-20 ANZ6 AKL → LAX Jul 20, 08:45 UTCJul 20, 20:15 UTC11h 30m
2026-07-19 ANZ5 LAX → AKL Jul 19, 05:40 UTCJul 19, 17:40 UTC12h 0m
2026-07-18 ANZ6 - Jul 18, 08:55 UTCJul 18, 20:20 UTC11h 25m
2026-07-18 ANZ945 RAR → AKL Jul 18, 05:35 UTCJul 18, 06:10 UTC35m
2026-07-17 ANZ946 AKL → RAR Jul 17, 21:10 UTCJul 17, 21:44 UTC35m
2026-07-17 ANZ5 LAX → AKL Jul 17, 05:45 UTCJul 17, 17:50 UTC12h 5m
2026-07-16 ANZ6 - Jul 16, 09:25 UTCJul 16, 20:39 UTC11h 15m
2026-07-15 ANZ945 - Jul 15, 21:05 UTCJul 16, 06:15 UTC9h 10m
2026-07-15 ANZ5 - Jul 15, 05:40 UTCJul 15, 17:55 UTC12h 15m
2026-07-14 ANZ6 - Jul 14, 08:30 UTCJul 14, 19:55 UTC11h 25m
2026-07-14 ANZ122 MEL → AKL Jul 14, 02:45 UTCJul 14, 05:40 UTC2h 55m
2026-07-13 ANZ121 - Jul 13, 21:15 UTCJul 14, 00:55 UTC3h 40m
2026-07-13 ANZ23 YVR → AKL Jul 13, 04:15 UTCJul 13, 17:20 UTC13h 5m
2026-07-12 ANZ24 - Jul 12, 09:15 UTCJul 12, 21:30 UTC12h 15m
2026-07-12 ANZ293 - Jul 12, 06:20 UTCJul 12, 06:40 UTC20m
2026-07-11 ANZ292 - Jul 11, 10:15 UTCJul 12, 04:45 UTC18h 30m
2026-07-11 ANZ292 - Jul 11, 08:10 UTCJul 12, 04:45 UTC20h 35m
2026-07-10 ANZ945 - Jul 10, 20:55 UTCJul 11, 05:45 UTC8h 50m
2026-07-10 ANZ23 YVR → AKL Jul 10, 04:15 UTCJul 10, 17:20 UTC13h 5m
2026-07-09 ANZ24 - Jul 9, 08:45 UTCJul 9, 21:10 UTC12h 25m
2026-07-09 ANZ122 MEL → AKL Jul 9, 02:35 UTCJul 9, 05:45 UTC3h 10m
2026-07-08 ANZ121 - Jul 8, 21:25 UTCJul 9, 00:40 UTC3h 15m
2026-07-08 ANZ23 - Jul 8, 04:15 UTCJul 8, 17:05 UTC12h 50m
2026-07-07 ANZ24 - Jul 7, 08:40 UTCJul 7, 21:20 UTC12h 40m
2026-07-06 ANZ953 - Jul 6, 22:10 UTCJul 7, 06:05 UTC7h 55m
2026-07-06 ANZ23 - Jul 6, 04:20 UTCJul 6, 17:05 UTC12h 45m
2026-07-05 ANZ24 - Jul 5, 09:10 UTCJul 5, 21:45 UTC12h 35m
2026-07-05 ANZ146 BNE → AKL Jul 5, 03:25 UTCJul 5, 05:55 UTC2h 30m
2026-07-04 ANZ145 - Jul 4, 22:20 UTCJul 5, 01:35 UTC3h 15m
2026-07-04 ANZ23 YVR → AKL Jul 4, 04:15 UTCJul 4, 17:30 UTC13h 15m
2026-07-03 ANZ24 - Jul 3, 08:35 UTCJul 3, 20:55 UTC12h 20m
2026-07-02 ANZ953 - Jul 2, 22:40 UTCJul 3, 05:40 UTC7h 0m
2026-07-02 ANZ283 SIN → AKL Jul 2, 11:25 UTCJul 2, 20:05 UTC8h 40m
2026-07-02 ANZ284 - Jul 2, 08:40 UTCJul 2, 08:50 UTC10m
2026-07-01 ANZ284 - Jul 1, 22:35 UTCJul 2, 02:35 UTC4h 0m

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

Mode-S C81D7E frequently asked

What is Mode-S code C81D7E?
C81D7E is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-OKM.
Where is Mode-S C81D7E registered?
Mode-S code C81D7E 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 C81D7E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81D7E, octal 62016576, decimal 13,114,750.
What flights does C81D7E operate?
Mode-S C81D7E has broadcast 20 distinct callsigns, including ANZ284, ANZ283, ANZ281, ANZ6, ANZ282.