Apparatus

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sensors Mode-S transponder

3C667A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AISZ · AIRBUS A-321

Hex
3C667A
Octal
17063172
Decimal
3,958,394
Country
DE
Tail
D-AISZ
Type
A321
No current signal · last broadcast 5h ago
Flights observed
418
Distinct callsigns
20
Country
DE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 3C667A.

Country allocation

The ICAO 24-bit address 3C667A falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
DLH74U - 8 2026-07-14
DLH81H - 5 2026-07-05
DLH5LX - 5 2026-07-07
DLH4WE - 5 2026-06-26
DLH4UP - 5 2026-07-13
DLH3RK - 5 2026-06-26
DLH9ML - 4 2026-07-06
DLH9MH - 4 2026-07-05
DLH99M Lufthansa 4 2026-06-01
DLH93V Lufthansa 4 2026-06-01
DLH8PP - 4 2026-07-13
DLH895 - 4 2026-07-17
DLH894 Lufthansa 4 2026-07-17
DLH6MM - 4 2026-06-30
DLH2NE - 4 2026-06-30
DLH2HH - 4 2026-07-05
DLH195 - 4 2026-06-27
DLH194 - 4 2026-06-27
DLH9EJ - 3 2026-06-25
DLH99Y - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DLH202 FRA → BER Jul 17, 18:40 UTCJul 17, 19:25 UTC45m
2026-07-17 DLH2XC - Jul 17, 16:19 UTCJul 17, 17:09 UTC50m
2026-07-17 DLH192 FRA → BER Jul 17, 14:20 UTCJul 17, 15:15 UTC55m
2026-07-17 DLH895 VNO → FRA Jul 17, 10:55 UTCJul 17, 12:40 UTC1h 45m
2026-07-17 DLH894 FRA → SVG Jul 17, 08:04 UTCJul 17, 09:50 UTC1h 45m
2026-07-17 DLH6EJ - Jul 17, 04:10 UTCJul 17, 05:10 UTC1h 0m
2026-07-16 DLH4KW ATH → MUC Jul 16, 20:39 UTCJul 16, 21:40 UTC1h 0m
2026-07-16 DLH8CT - Jul 16, 17:54 UTCJul 16, 19:05 UTC1h 10m
2026-07-16 DLH5EF FRA → BHX Jul 16, 15:14 UTCJul 16, 16:35 UTC1h 20m
2026-07-16 DLH8EM - Jul 16, 12:20 UTCJul 16, 14:05 UTC1h 45m
2026-07-16 DLH6RK - Jul 16, 09:00 UTCJul 16, 10:35 UTC1h 35m
2026-07-16 DLH8RM - Jul 16, 06:30 UTCJul 16, 07:15 UTC45m
2026-07-16 DLH6VV FRA → HAJ Jul 16, 05:10 UTCJul 16, 05:45 UTC35m
2026-07-15 DLH5RM DUB → FRA Jul 15, 17:30 UTCJul 15, 19:05 UTC1h 35m
2026-07-15 DLH980 FRA → DUB Jul 15, 14:10 UTCJul 15, 16:00 UTC1h 50m
2026-07-15 DLH6YX - Jul 15, 11:20 UTCJul 15, 12:55 UTC1h 35m
2026-07-15 DLH3MU - Jul 15, 08:45 UTCJul 15, 10:05 UTC1h 20m
2026-07-15 DLH78H - Jul 15, 04:10 UTCJul 15, 05:55 UTC1h 45m
2026-07-14 DLH74U FRA → MAD Jul 14, 16:00 UTCJul 14, 18:10 UTC2h 10m
2026-07-14 DLH6YX - Jul 14, 11:00 UTCJul 14, 12:30 UTC1h 30m
2026-07-14 DLH3MU - Jul 14, 08:35 UTCJul 14, 09:45 UTC1h 10m
2026-07-14 DLH9PL DUB → FRA Jul 14, 05:15 UTCJul 14, 06:45 UTC1h 30m
2026-07-13 DLH982 FRA → DUB Jul 13, 19:30 UTCJul 13, 21:10 UTC1h 40m
2026-07-13 DLH4UP MLA → FRA Jul 13, 15:35 UTCJul 13, 17:55 UTC2h 20m
2026-07-13 DLH8PP - Jul 13, 12:15 UTCJul 13, 14:25 UTC2h 10m
2026-07-13 DLH2AC - Jul 13, 09:25 UTCJul 13, 10:50 UTC1h 25m
2026-07-13 DLH3YY FRA → GOT Jul 13, 07:15 UTCJul 13, 08:25 UTC1h 10m
2026-07-12 OCN3ME - Jul 12, 17:55 UTCJul 12, 20:45 UTC2h 50m
2026-07-12 OCN7YZ - Jul 12, 14:01 UTCJul 12, 16:30 UTC2h 30m
2026-07-12 DLH6EN CPH → FRA Jul 12, 08:20 UTCJul 12, 09:25 UTC1h 5m
2026-07-12 DLH4HK FRA → CPH Jul 12, 06:01 UTCJul 12, 07:01 UTC1h 0m
2026-07-11 DLH05E OPO → FRA Jul 11, 16:00 UTCJul 11, 18:10 UTC2h 10m
2026-07-11 DLH83T FRA → OPO Jul 11, 12:20 UTCJul 11, 14:40 UTC2h 20m
2026-07-11 DLH955 - Jul 11, 09:50 UTCJul 11, 11:00 UTC1h 10m
2026-07-11 DLH8UL FRA → BHX Jul 11, 07:30 UTCJul 11, 08:40 UTC1h 10m
2026-07-11 DLH1JT - Jul 11, 03:30 UTCJul 11, 05:40 UTC2h 10m
2026-07-10 DLH1UT - Jul 10, 18:25 UTCJul 10, 20:05 UTC1h 40m
2026-07-10 DLH37F - Jul 10, 15:05 UTCJul 10, 16:50 UTC1h 45m
2026-07-10 DLH99F - Jul 10, 11:35 UTCJul 10, 13:20 UTC1h 45m
2026-07-10 DLH3EJ DUB → FRA Jul 10, 08:00 UTCJul 10, 09:30 UTC1h 30m
2026-07-10 DLH6LC - Jul 10, 05:20 UTCJul 10, 06:55 UTC1h 35m
2026-07-09 DLH947 - Jul 9, 17:40 UTCJul 9, 18:55 UTC1h 15m
2026-07-09 DLH9YW FRA → MAN Jul 9, 15:00 UTCJul 9, 16:20 UTC1h 20m
2026-07-09 DLH37W MAD → FRA Jul 9, 11:40 UTCJul 9, 13:40 UTC2h 0m
2026-07-09 DLH02F FRA → MAD Jul 9, 08:15 UTCJul 9, 10:20 UTC2h 5m
2026-07-07 DLH1299 - Jul 7, 11:10 UTCJul 7, 13:50 UTC2h 40m
2026-07-07 DLH1298 - Jul 7, 07:20 UTCJul 7, 09:40 UTC2h 20m
2026-07-07 DLH5LX - Jul 7, 04:25 UTCJul 7, 05:45 UTC1h 20m
2026-07-06 DLH9ML FRA → KRK Jul 6, 20:40 UTCJul 6, 21:55 UTC1h 15m
2026-07-06 DLH7JV - Jul 6, 16:55 UTCJul 6, 18:00 UTC1h 5m

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 D-AISZ page for operator, model, and routing details .

Mode-S 3C667A frequently asked

What is Mode-S code 3C667A?
3C667A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AISZ.
Where is Mode-S 3C667A registered?
Mode-S code 3C667A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C667A broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C667A, octal 17063172, decimal 3,958,394.
What flights does 3C667A operate?
Mode-S 3C667A has broadcast 20 distinct callsigns, including DLH74U, DLH81H, DLH5LX, DLH4WE, DLH4UP.