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sensors Mode-S transponder

C817BD

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-DMW · CESSNA 172 Skyhawk

Hex
C817BD
Octal
62013675
Decimal
13,113,277
Country
NZ
Tail
ZK-DMW
Type
C172
No current signal · last broadcast Jul 23, 03:55 UTC
Flights observed
137
Distinct callsigns
1
Country
NZ
Last broadcast
Jul 23, 03:55 UTC

Last known position

Most recent position reported by Mode-S C817BD.

Country allocation

The ICAO 24-bit address C817BD 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 1 distinct

Callsign Airline Flights Last seen
ZKDMW - 137 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 ZKDMW - Jul 23, 03:45 UTCJul 23, 03:55 UTC10m
2026-07-23 ZKDMW - Jul 23, 02:25 UTCJul 23, 03:05 UTC40m
2026-07-22 ZKDMW - Jul 22, 02:35 UTCJul 22, 02:45 UTC10m
2026-07-21 ZKDMW - Jul 21, 02:00 UTCJul 21, 03:00 UTC1h 0m
2026-07-21 ZKDMW - Jul 21, 00:00 UTCJul 21, 00:25 UTC25m
2026-06-29 ZKDMW - Jun 29, 00:54 UTCJun 29, 01:29 UTC35m
2026-06-28 ZKDMW - Jun 28, 22:10 UTCJun 28, 22:24 UTC15m
2026-06-28 ZKDMW - Jun 28, 03:35 UTCJun 28, 03:59 UTC25m
2026-06-28 ZKDMW - Jun 28, 00:20 UTCJun 28, 00:50 UTC30m
2026-06-27 ZKDMW - Jun 27, 22:29 UTCJun 27, 23:29 UTC1h 0m
2026-06-27 ZKDMW - Jun 27, 03:34 UTCJun 27, 04:09 UTC35m
2026-06-27 ZKDMW - Jun 27, 01:44 UTCJun 27, 02:35 UTC50m
2026-06-26 ZKDMW - Jun 26, 23:15 UTCJun 26, 23:34 UTC20m
2026-06-26 ZKDMW - Jun 26, 00:45 UTCJun 26, 01:05 UTC20m
2026-06-25 ZKDMW - Jun 25, 23:44 UTCJun 25, 23:55 UTC10m
2026-06-25 ZKDMW - Jun 25, 01:19 UTCJun 25, 01:54 UTC35m
2026-06-23 ZKDMW - Jun 23, 02:09 UTCJun 23, 02:45 UTC35m
2026-06-22 ZKDMW - Jun 22, 22:19 UTCJun 22, 22:49 UTC30m
2026-06-22 ZKDMW - Jun 22, 02:19 UTCJun 22, 03:14 UTC55m
2026-06-20 ZKDMW - Jun 20, 02:40 UTCJun 20, 03:19 UTC40m
2026-06-20 ZKDMW - Jun 20, 01:14 UTCJun 20, 01:50 UTC35m
2026-06-19 ZKDMW - Jun 19, 23:04 UTCJun 19, 23:39 UTC35m
2026-06-19 ZKDMW - Jun 19, 20:55 UTCJun 19, 21:54 UTC1h 0m
2026-06-19 ZKDMW - Jun 19, 06:20 UTCJun 19, 07:14 UTC55m
2026-06-19 ZKDMW - Jun 19, 01:39 UTCJun 19, 02:35 UTC55m
2026-06-18 ZKDMW - Jun 18, 04:10 UTCJun 18, 05:00 UTC50m
2026-06-14 ZKDMW - Jun 14, 02:25 UTCJun 14, 02:55 UTC30m
2026-06-14 ZKDMW - Jun 14, 00:55 UTCJun 14, 01:20 UTC25m
2026-06-13 ZKDMW - Jun 13, 04:25 UTCJun 13, 04:55 UTC30m
2026-06-13 ZKDMW - Jun 13, 02:25 UTCJun 13, 02:55 UTC30m
2026-06-13 ZKDMW - Jun 13, 01:30 UTCJun 13, 01:45 UTC15m
2026-06-12 ZKDMW - Jun 12, 23:35 UTCJun 13, 00:05 UTC30m
2026-06-12 ZKDMW - Jun 12, 02:10 UTCJun 12, 03:20 UTC1h 10m
2026-06-11 ZKDMW - Jun 11, 22:50 UTCJun 11, 23:40 UTC50m
2026-06-11 ZKDMW - Jun 11, 21:10 UTCJun 11, 21:25 UTC15m
2026-06-11 ZKDMW - Jun 11, 02:30 UTCJun 11, 03:10 UTC40m
2026-06-10 ZKDMW - Jun 10, 23:25 UTCJun 11, 01:50 UTC2h 25m
2026-06-10 ZKDMW - Jun 10, 20:50 UTCJun 10, 21:45 UTC55m
2026-06-10 ZKDMW - Jun 10, 00:35 UTCJun 10, 01:20 UTC45m
2026-06-09 ZKDMW - Jun 9, 22:55 UTCJun 9, 23:55 UTC1h 0m
2026-06-09 ZKDMW - Jun 9, 04:30 UTCJun 9, 04:45 UTC15m
2026-06-09 ZKDMW - Jun 9, 03:30 UTCJun 9, 03:40 UTC10m
2026-06-09 ZKDMW - Jun 9, 01:35 UTCJun 9, 02:25 UTC50m
2026-06-08 ZKDMW - Jun 8, 02:00 UTCJun 8, 02:25 UTC25m
2026-06-08 ZKDMW - Jun 8, 00:30 UTCJun 8, 00:55 UTC25m
2026-06-07 ZKDMW - Jun 7, 22:40 UTCJun 7, 23:30 UTC50m
2026-06-07 ZKDMW - Jun 7, 21:00 UTCJun 7, 21:40 UTC40m
2026-06-06 ZKDMW - Jun 6, 03:15 UTCJun 6, 03:35 UTC20m
2026-06-05 ZKDMW - Jun 5, 00:10 UTCJun 5, 00:25 UTC15m
2026-05-28 ZKDMW - May 28, 21:20 UTCMay 28, 21:45 UTC25m

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

Mode-S C817BD frequently asked

What is Mode-S code C817BD?
C817BD is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-DMW.
Where is Mode-S C817BD registered?
Mode-S code C817BD 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 C817BD broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 03:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C817BD, octal 62013675, decimal 13,113,277.
What flights does C817BD operate?
Mode-S C817BD has broadcast 1 distinct callsign, including ZKDMW.