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sensors Mode-S transponder

3C664F

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AIRO · AIRBUS A-321

Hex
3C664F
Octal
17063117
Decimal
3,958,351
Country
DE
Tail
D-AIRO
Type
A321
Broadcasting now · callsign DLH1299 · 8,550 ft
Flights observed
414
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Current position

3C664F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C664F 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
DLH8WE - 5 2026-07-01
DLH6KA - 5 2026-07-09
DLH3UX - 5 2026-07-09
DLH08F - 5 2026-06-28
DLH01E - 5 2026-06-28
DLH010 - 5 2026-07-01
DLH81H - 4 2026-07-12
DLH67K - 4 2026-07-11
DLH4YF Lufthansa 4 2026-05-20
DLH44K - 4 2026-06-30
DLH247 Lufthansa 4 2026-05-20
DLH195 - 4 2026-07-05
DLH194 - 4 2026-07-05
DLH14C - 4 2026-06-30
DLH1455 Lufthansa 4 2026-06-13
DLH9KX - 3 2026-07-04
DLH979 Lufthansa 3 2026-06-07
DLH978 Lufthansa 3 2026-06-07
DLH84H - 3 2026-07-13
DLH821 Lufthansa 3 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DLH1298 - Jul 14, 07:10 UTCJul 14, 09:40 UTC2h 30m
2026-07-14 DLH5LX - Jul 14, 04:25 UTCJul 14, 05:45 UTC1h 20m
2026-07-13 DLH9ML - Jul 13, 20:10 UTCJul 13, 21:25 UTC1h 15m
2026-07-13 DLH8VY - Jul 13, 17:10 UTCJul 13, 18:35 UTC1h 25m
2026-07-13 DLH1LA FRA → GOT Jul 13, 14:50 UTCJul 13, 16:05 UTC1h 15m
2026-07-13 DLH84H VLC → FRA Jul 13, 11:05 UTCJul 13, 13:10 UTC2h 5m
2026-07-13 DLH21A FRA → VLC Jul 13, 08:01 UTCJul 13, 10:00 UTC2h 0m
2026-07-12 DLH35U FAO → FRA Jul 12, 14:45 UTCJul 12, 17:10 UTC2h 25m
2026-07-12 DLH02T FRA → FAO Jul 12, 10:40 UTCJul 12, 13:35 UTC2h 55m
2026-07-12 DLH81H - Jul 12, 06:35 UTCJul 12, 08:30 UTC1h 55m
2026-07-11 DLH67K FRA → MAD Jul 11, 19:30 UTCJul 11, 21:35 UTC2h 5m
2026-07-11 DLH875 BGO → FRA Jul 11, 15:40 UTCJul 11, 17:20 UTC1h 40m
2026-07-11 DLH8WY FRA → BGO Jul 11, 12:50 UTCJul 11, 14:35 UTC1h 45m
2026-07-11 DLH323 - Jul 11, 09:25 UTCJul 11, 11:20 UTC1h 55m
2026-07-11 DLH322 - Jul 11, 06:15 UTCJul 11, 07:55 UTC1h 40m
2026-07-11 DLH049 HAJ → FRA Jul 11, 04:10 UTCJul 11, 04:50 UTC40m
2026-07-10 DLH048 FRA → HAJ Jul 10, 20:50 UTCJul 10, 21:20 UTC30m
2026-07-10 DLH3MA ATH → FRA Jul 10, 16:10 UTCJul 10, 18:50 UTC2h 40m
2026-07-10 DLH4LM FRA → ATH Jul 10, 12:35 UTCJul 10, 14:55 UTC2h 20m
2026-07-10 DLH1RF MUC → FRA Jul 10, 10:15 UTCJul 10, 11:00 UTC45m
2026-07-10 DLH4LC FRA → MUC Jul 10, 08:30 UTCJul 10, 09:05 UTC35m
2026-07-10 DLH5LX KRK → FRA Jul 10, 04:25 UTCJul 10, 05:45 UTC1h 20m
2026-07-09 DLH9ML FRA → KRK Jul 9, 20:45 UTCJul 9, 21:55 UTC1h 10m
2026-07-09 DLH6KA BUD → FRA Jul 9, 12:40 UTCJul 9, 14:00 UTC1h 20m
2026-07-09 DLH3UX FRA → BUD Jul 9, 10:20 UTCJul 9, 11:30 UTC1h 10m
2026-07-09 DLH007 - Jul 9, 08:15 UTCJul 9, 09:00 UTC45m
2026-07-09 DLH4EF - Jul 9, 06:10 UTCJul 9, 07:00 UTC50m
2026-07-08 DLH3EK - Jul 8, 15:20 UTCJul 8, 16:45 UTC1h 25m
2026-07-08 DLH3NX FRA → OSL Jul 8, 12:20 UTCJul 8, 14:05 UTC1h 45m
2026-07-08 DLH81H MAD → FRA Jul 8, 06:35 UTCJul 8, 08:45 UTC2h 10m
2026-07-07 DLH67K FRA → MAD Jul 7, 19:15 UTCJul 7, 21:10 UTC1h 55m
2026-07-07 DLH6KA BUD → FRA Jul 7, 12:35 UTCJul 7, 14:05 UTC1h 30m
2026-07-07 DLH3UX FRA → BUD Jul 7, 10:20 UTCJul 7, 11:35 UTC1h 15m
2026-07-07 DLH81H MAD → FRA Jul 7, 06:35 UTCJul 7, 08:50 UTC2h 15m
2026-07-06 DLH67K FRA → MAD Jul 6, 19:30 UTCJul 6, 21:45 UTC2h 15m
2026-07-06 DLH2YA - Jul 6, 12:25 UTCJul 6, 13:50 UTC1h 25m
2026-07-06 DLH4YE FRA → WAW Jul 6, 10:10 UTCJul 6, 11:25 UTC1h 15m
2026-07-05 DLH195 - Jul 5, 17:05 UTCJul 5, 17:45 UTC40m
2026-07-05 DLH194 FRA → BER Jul 5, 15:10 UTCJul 5, 15:55 UTC45m
2026-07-05 DLH8JT ARN → FRA Jul 5, 11:50 UTCJul 5, 13:30 UTC1h 40m
2026-07-05 DLH4RJ FRA → ARN Jul 5, 08:45 UTCJul 5, 10:35 UTC1h 50m
2026-07-05 DLH3C ZRH → FRA Jul 5, 06:35 UTCJul 5, 07:20 UTC45m
2026-07-05 DLH8YY FRA → ZRH Jul 5, 05:05 UTCJul 5, 05:40 UTC35m
2026-07-05 DLH1319 - Jul 5, 00:50 UTCJul 5, 03:10 UTC2h 20m
2026-07-04 DLH1318 - Jul 4, 20:05 UTCJul 4, 22:05 UTC2h 0m
2026-07-04 DLH51H FRA → FRA Jul 4, 18:20 UTCJul 4, 18:25 UTC5m
2026-07-04 DLH51H - Jul 4, 16:25 UTCJul 4, 18:10 UTC1h 45m
2026-07-04 DLH04T - Jul 4, 13:25 UTCJul 4, 15:15 UTC1h 50m
2026-07-04 DLH1LL HAM → FRA Jul 4, 07:10 UTCJul 4, 07:55 UTC45m
2026-07-04 DLH9KX FRA → HAM Jul 4, 05:15 UTCJul 4, 06:05 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 D-AIRO page for operator, model, and routing details .

Mode-S 3C664F frequently asked

What is Mode-S code 3C664F?
3C664F is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AIRO.
Where is Mode-S 3C664F registered?
Mode-S code 3C664F is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C664F broadcasting right now?
Yes. Mode-S 3C664F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C664F, octal 17063117, decimal 3,958,351.
What flights does 3C664F operate?
Mode-S 3C664F has broadcast 20 distinct callsigns, including DLH8WE, DLH6KA, DLH3UX, DLH08F, DLH01E.