Apparatus

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sensors Mode-S transponder

C820D4

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-NZG · BOEING 787-9 Dreamliner

Hex
C820D4
Octal
62020324
Decimal
13,115,604
Country
NZ
Tail
ZK-NZG
Type
B789
No current signal · last broadcast 3h ago
Flights observed
190
Distinct callsigns
20
Country
NZ
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S C820D4.

Country allocation

The ICAO 24-bit address C820D4 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
ANZ7 - 19 2026-07-04
ANZ8 - 18 2026-07-03
ANZ80 - 16 2026-06-24
ANZ81 - 13 2026-06-24
ANZ945 - 9 2026-07-13
ANZ288 - 8 2026-07-01
ANZ176 - 8 2026-07-13
ANZ24 Air New Zealand 7 2026-05-13
ANZ175 - 7 2026-07-13
ANZ23 Air New Zealand 6 2026-05-14
ANZ99 - 5 2026-07-08
ANZ290 - 5 2026-07-08
ANZ289 - 5 2026-06-30
ANZ145 - 5 2026-07-02
ANZ993 - 4 2026-07-09
ANZ953 - 4 2026-07-04
ANZ78 - 4 2026-06-23
ANZ77 - 4 2026-06-23
ANZ146 - 4 2026-07-03
ANZ90 - 3 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ANZ945 - Jul 13, 21:00 UTCJul 14, 05:55 UTC8h 55m
2026-07-13 ANZ176 - Jul 13, 17:20 UTCJul 13, 17:35 UTC15m
2026-07-13 ANZ176 - Jul 13, 12:00 UTCJul 13, 15:30 UTC3h 30m
2026-07-13 ANZ175 - Jul 13, 00:50 UTCJul 13, 08:01 UTC7h 10m
2026-07-12 ANZ178 - Jul 12, 21:45 UTCJul 12, 22:00 UTC15m
2026-07-12 ANZ178 - Jul 12, 16:30 UTCJul 12, 19:35 UTC3h 5m
2026-07-12 ANZ173 - Jul 12, 07:20 UTCJul 12, 14:15 UTC6h 55m
2026-07-12 ANZ9 - Jul 12, 04:20 UTCJul 12, 05:01 UTC40m
2026-07-11 ANZ9 - Jul 11, 20:40 UTCJul 11, 20:55 UTC15m
2026-07-11 ANZ10 - Jul 11, 18:15 UTCJul 11, 18:35 UTC20m
2026-07-11 ANZ10 - Jul 11, 10:20 UTCJul 11, 10:45 UTC25m
2026-07-11 ANZ122 MEL → AKL Jul 11, 02:45 UTCJul 11, 05:50 UTC3h 5m
2026-07-11 ANZ121 - Jul 11, 00:00 UTCJul 11, 00:40 UTC40m
2026-07-10 ANZ121 - Jul 10, 21:20 UTCJul 10, 21:35 UTC15m
2026-07-09 ANZ993 - Jul 9, 21:10 UTCJul 10, 06:10 UTC9h 0m
2026-07-08 ANZ290 - Jul 8, 23:30 UTCJul 9, 17:15 UTC17h 45m
2026-07-08 ANZ90 - Jul 8, 11:25 UTCJul 8, 21:15 UTC9h 50m
2026-07-08 ANZ99 - Jul 8, 08:35 UTCJul 8, 09:05 UTC30m
2026-07-07 ANZ99 - Jul 7, 22:50 UTCJul 7, 23:10 UTC20m
2026-07-07 ANZ1 JFK → AKL Jul 7, 02:45 UTCJul 7, 18:55 UTC16h 10m
2026-07-06 ANZ2 - Jul 6, 07:50 UTCJul 6, 23:10 UTC15h 20m
2026-07-04 ANZ953 - Jul 4, 22:25 UTCJul 5, 13:15 UTC14h 50m
2026-07-04 ANZ7 SFO → AKL Jul 4, 05:25 UTCJul 4, 17:45 UTC12h 20m
2026-07-03 ANZ8 - Jul 3, 08:00 UTCJul 3, 19:20 UTC11h 20m
2026-07-03 ANZ146 BNE → AKL Jul 3, 02:55 UTCJul 3, 05:25 UTC2h 30m
2026-07-02 ANZ145 - Jul 2, 21:40 UTCJul 3, 01:05 UTC3h 25m
2026-07-01 ANZ288 - Jul 1, 15:10 UTCJul 1, 17:40 UTC2h 30m
2026-06-30 ANZ288 - Jun 30, 22:40 UTCJul 1, 17:40 UTC19h 0m
2026-06-30 ANZ289 - Jun 30, 12:25 UTCJun 30, 12:40 UTC15m
2026-06-29 ANZ945 - Jun 29, 21:44 UTCJun 30, 06:10 UTC8h 26m
2026-06-29 ANZ7 - Jun 29, 17:10 UTCJun 29, 17:49 UTC40m
2026-06-29 ANZ7 - Jun 29, 05:40 UTCJun 29, 06:05 UTC25m
2026-06-28 ANZ8 - Jun 28, 08:29 UTCJun 28, 20:04 UTC11h 35m
2026-06-27 ANZ945 - Jun 27, 20:59 UTCJun 28, 05:49 UTC8h 50m
2026-06-27 ANZ288 - Jun 27, 08:14 UTCJun 27, 17:55 UTC9h 40m
2026-06-26 ANZ289 - Jun 26, 11:20 UTCJun 27, 08:20 UTC21h 0m
2026-06-25 ANZ945 - Jun 25, 21:35 UTCJun 26, 06:25 UTC8h 50m
2026-06-25 ANZ176 PER → AKL Jun 25, 12:10 UTCJun 25, 18:00 UTC5h 50m
2026-06-25 ANZ175 - Jun 25, 01:09 UTCJun 25, 07:34 UTC6h 25m
2026-06-24 ANZ80 - Jun 24, 12:44 UTCJun 24, 21:34 UTC8h 50m
2026-06-24 ANZ80 - Jun 24, 11:39 UTCJun 24, 11:59 UTC20m
2026-06-24 ANZ81 - Jun 24, 09:29 UTCJun 24, 09:49 UTC20m
2026-06-23 ANZ81 - Jun 23, 23:05 UTCJun 24, 08:39 UTC9h 35m
2026-06-23 ANZ78 TPE → AKL Jun 23, 10:39 UTCJun 23, 20:54 UTC10h 15m
2026-06-23 ANZ77 - Jun 23, 08:00 UTCJun 23, 08:45 UTC45m
2026-06-22 ANZ77 - Jun 22, 21:54 UTCJun 22, 22:10 UTC15m
2026-06-22 ANZ291 DPS → AKL Jun 22, 01:49 UTCJun 22, 17:10 UTC15h 20m
2026-06-21 ANZ290 - Jun 21, 23:24 UTCJun 21, 23:40 UTC15m
2026-06-21 ANZ90 - Jun 21, 11:15 UTCJun 21, 21:10 UTC9h 55m
2026-06-21 ANZ99 - Jun 21, 07:45 UTCJun 21, 08:35 UTC50m

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

Mode-S C820D4 frequently asked

What is Mode-S code C820D4?
C820D4 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-NZG.
Where is Mode-S C820D4 registered?
Mode-S code C820D4 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 C820D4 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C820D4, octal 62020324, decimal 13,115,604.
What flights does C820D4 operate?
Mode-S C820D4 has broadcast 20 distinct callsigns, including ANZ7, ANZ8, ANZ80, ANZ81, ANZ945.