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
- Flights observed
- 85
- Distinct callsigns
- 20
- Country
- NZ
- Last broadcast
- 2d ago
Last known position
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 |
|---|---|---|---|
| ANZ281 | Air New Zealand | 13 | 2026-05-23 |
| ANZ283 | Air New Zealand | 12 | 2026-05-14 |
| ANZ282 | Air New Zealand | 12 | 2026-05-22 |
| ANZ284 | Air New Zealand | 7 | 2026-05-13 |
| ANZ90 | Air New Zealand | 5 | 2026-05-17 |
| ANZ99 | Air New Zealand | 4 | 2026-05-16 |
| ANZ903 | Air New Zealand | 4 | 2026-05-01 |
| ANZ291 | Air New Zealand | 3 | 2026-05-17 |
| ANZ104 | Air New Zealand | 3 | 2026-05-27 |
| ANZ103 | Air New Zealand | 3 | 2026-05-26 |
| ANZ902 | Air New Zealand | 2 | 2026-05-01 |
| ANZ6 | Air New Zealand | 2 | 2026-04-25 |
| ANZ5 | Air New Zealand | 2 | 2026-04-26 |
| ANZ3 | Air New Zealand | 2 | 2026-04-20 |
| ANZ146 | Air New Zealand | 2 | 2026-05-24 |
| ANZ145 | Air New Zealand | 2 | 2026-05-23 |
| ANZ953 | Air New Zealand | 1 | 2026-05-25 |
| ANZ946 | Air New Zealand | 1 | 2026-04-21 |
| ANZ945 | Air New Zealand | 1 | 2026-05-01 |
| ANZ4 | Air New Zealand | 1 | 2026-04-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | ANZ104 | SYD → AKL | May 27, 02:29 UTC | May 27, 04:49 UTC | 2h 20m |
| 2026-05-26 | ANZ103 | AKL → SYD | May 26, 21:20 UTC | May 27, 00:49 UTC | 3h 30m |
| 2026-05-25 | ANZ953 | NAN → AKL | May 25, 04:25 UTC | May 25, 05:00 UTC | 35m |
| 2026-05-24 | ANZ146 | BNE → AKL | May 24, 03:50 UTC | May 24, 06:35 UTC | 2h 45m |
| 2026-05-23 | ANZ145 | AKL → BNE | May 23, 22:25 UTC | May 24, 01:10 UTC | 2h 45m |
| 2026-05-23 | ANZ281 | SIN → AKL | May 23, 09:50 UTC | May 23, 10:15 UTC | 25m |
| 2026-05-23 | ANZ281 | SIN → AKL | May 23, 07:15 UTC | May 23, 08:05 UTC | 50m |
| 2026-05-22 | ANZ282 | AKL → SIN | May 22, 22:30 UTC | May 22, 22:40 UTC | 10m |
| 2026-05-22 | ANZ282 | AKL → SIN | May 22, 12:30 UTC | May 22, 15:25 UTC | 2h 55m |
| 2026-05-22 | ANZ281 | SIN → AKL | May 22, 07:15 UTC | May 22, 10:10 UTC | 2h 54m |
| 2026-05-21 | ANZ282 | AKL → SIN | May 21, 12:25 UTC | May 21, 15:30 UTC | 3h 5m |
| 2026-05-21 | ANZ281 | SIN → AKL | May 21, 07:00 UTC | May 21, 09:50 UTC | 2h 50m |
| 2026-05-21 | ANZ281 | SIN → AKL | May 21, 00:50 UTC | May 21, 01:00 UTC | 10m |
| 2026-05-20 | ANZ282 | AKL → SIN | May 20, 12:15 UTC | May 20, 15:30 UTC | 3h 15m |
| 2026-05-20 | ANZ281 | SIN → AKL | May 20, 07:00 UTC | May 20, 09:45 UTC | 2h 45m |
| 2026-05-19 | ANZ282 | AKL → SIN | May 19, 12:15 UTC | May 19, 22:40 UTC | 10h 25m |
| 2026-05-19 | ANZ122 | MEL → AKL | May 19, 03:00 UTC | May 19, 06:10 UTC | 3h 10m |
| 2026-05-18 | ANZ121 | AKL → MEL | May 18, 21:45 UTC | May 19, 01:15 UTC | 3h 30m |
| 2026-05-17 | ANZ291 | DPS → AKL | May 17, 23:45 UTC | May 18, 17:25 UTC | 17h 40m |
| 2026-05-17 | ANZ90 | NRT → AKL | May 17, 11:25 UTC | May 17, 21:35 UTC | 10h 10m |
| 2026-05-16 | ANZ99 | AKL → NRT | May 16, 22:35 UTC | May 17, 08:50 UTC | 10h 15m |
| 2026-05-16 | ANZ291 | DPS → AKL | May 16, 00:30 UTC | May 16, 19:25 UTC | 18h 56m |
| 2026-05-15 | ANZ90 | NRT → AKL | May 15, 12:00 UTC | May 15, 22:15 UTC | 10h 14m |
| 2026-05-14 | ANZ99 | AKL → NRT | May 14, 23:15 UTC | May 15, 09:50 UTC | 10h 35m |
| 2026-05-14 | ANZ283 | SIN → AKL | May 14, 17:50 UTC | May 14, 20:45 UTC | 2h 55m |
| 2026-05-13 | ANZ284 | AKL → SIN | May 13, 23:20 UTC | May 14, 02:15 UTC | 2h 55m |
| 2026-05-13 | ANZ284 | AKL → SIN | May 13, 01:40 UTC | May 13, 21:00 UTC | 19h 20m |
| 2026-05-12 | ANZ284 | AKL → SIN | May 12, 23:45 UTC | May 13, 21:00 UTC | 21h 15m |
| 2026-05-12 | ANZ283 | SIN → AKL | May 12, 17:20 UTC | May 12, 20:30 UTC | 3h 10m |
| 2026-05-11 | ANZ283 | SIN → AKL | May 11, 01:34 UTC | May 11, 20:35 UTC | 19h 1m |
| 2026-05-11 | ANZ283 | SIN → AKL | May 11, 00:40 UTC | May 11, 20:35 UTC | 19h 56m |
| 2026-05-10 | ANZ283 | SIN → AKL | May 10, 22:35 UTC | May 11, 20:35 UTC | 22h 1m |
| 2026-05-10 | ANZ283 | SIN → AKL | May 10, 01:34 UTC | May 10, 19:54 UTC | 18h 20m |
| 2026-05-10 | ANZ283 | SIN → AKL | May 10, 00:55 UTC | May 10, 19:54 UTC | 19h 0m |
| 2026-05-09 | ANZ283 | SIN → AKL | May 9, 22:49 UTC | May 10, 19:54 UTC | 21h 5m |
| 2026-05-08 | ANZ290 | AKL → DPS | May 8, 23:50 UTC | May 9, 17:05 UTC | 17h 15m |
| 2026-05-08 | ANZ90 | NRT → AKL | May 8, 11:19 UTC | May 8, 21:10 UTC | 9h 50m |
| 2026-05-07 | ANZ99 | AKL → NRT | May 7, 22:30 UTC | May 8, 08:59 UTC | 10h 30m |
| 2026-05-06 | ANZ281 | SIN → AKL | May 6, 15:35 UTC | May 7, 10:20 UTC | 18h 45m |
| 2026-05-06 | ANZ282 | AKL → SIN | May 6, 14:55 UTC | May 7, 10:20 UTC | 19h 25m |
| 2026-05-06 | ANZ282 | AKL → SIN | May 6, 12:35 UTC | May 7, 10:20 UTC | 21h 45m |
| 2026-05-06 | ANZ281 | SIN → AKL | May 6, 07:05 UTC | May 6, 09:55 UTC | 2h 50m |
| 2026-05-05 | ANZ281 | SIN → AKL | May 5, 14:20 UTC | May 6, 09:55 UTC | 19h 35m |
| 2026-05-05 | ANZ282 | AKL → SIN | May 5, 12:05 UTC | May 6, 09:55 UTC | 21h 50m |
| 2026-05-04 | ANZ281 | SIN → AKL | May 4, 15:35 UTC | May 5, 09:45 UTC | 18h 11m |
| 2026-05-04 | ANZ281 | SIN → AKL | May 4, 15:05 UTC | May 5, 09:45 UTC | 18h 41m |
| 2026-05-04 | ANZ282 | AKL → SIN | May 4, 12:15 UTC | May 5, 09:45 UTC | 21h 31m |
| 2026-05-04 | ANZ281 | SIN → AKL | May 4, 01:05 UTC | May 4, 10:00 UTC | 8h 55m |
| 2026-05-03 | ANZ282 | AKL → SIN | May 3, 22:15 UTC | May 3, 22:30 UTC | 15m |
| 2026-05-03 | ANZ282 | AKL → SIN | May 3, 12:15 UTC | May 3, 14:55 UTC | 2h 40m |
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 .