Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C4A0F

ICAO 24-bit transponder address · allocated to Germany

Hex
3C4A0F
Octal
17045017
Decimal
3,951,119
Country
DE
Broadcasting now · callsign DLH451 · 37,900 ft
Flights observed
141
Distinct callsigns
20
Country
DE
Last broadcast
7h ago

Current position

3C4A0F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C4A0F 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
DLH797 - 21 2026-07-12
DLH796 - 19 2026-07-12
DLH761 - 15 2026-06-27
DLH760 Lufthansa 15 2026-06-27
DLH500 - 9 2026-07-03
DLH729 - 8 2026-07-11
DLH542 - 8 2026-07-05
DLH753 - 7 2026-07-09
DLH543 Lufthansa 7 2026-07-06
DLH501 - 7 2026-07-04
DLH728 - 3 2026-07-10
DLH7JF - 2 2026-06-17
DLH752 - 2 2026-07-09
DLH6EE - 2 2026-06-17
DLH577 Lufthansa 2 2026-07-07
DLH4MW Lufthansa 2 2026-06-17
DLH471 Lufthansa 2 2026-05-08
DLH470 Lufthansa 2 2026-05-08
DLH107 - 2 2026-06-17
DLH576 Lufthansa 1 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DLH451 - Jul 14, 01:55 UTCJul 14, 04:30 UTC2h 35m
2026-07-13 DLH450 FRA → LAX Jul 13, 12:15 UTCJul 13, 23:15 UTC11h 0m
2026-07-12 DLH797 - Jul 12, 18:10 UTCJul 13, 04:05 UTC9h 55m
2026-07-12 DLH797 - Jul 12, 16:01 UTCJul 12, 16:20 UTC20m
2026-07-12 DLH796 - Jul 12, 06:25 UTCJul 12, 07:05 UTC40m
2026-07-11 DLH796 - Jul 11, 20:10 UTCJul 11, 23:35 UTC3h 25m
2026-07-11 DLH729 - Jul 11, 04:55 UTCJul 11, 16:25 UTC11h 30m
2026-07-10 DLH729 - Jul 10, 15:50 UTCJul 11, 15:45 UTC23h 55m
2026-07-10 DLH728 - Jul 10, 14:15 UTCJul 11, 05:10 UTC14h 55m
2026-07-09 DLH753 - Jul 9, 11:50 UTCJul 10, 06:50 UTC19h 0m
2026-07-09 DLH752 FRA → FRA Jul 9, 11:30 UTCJul 10, 06:50 UTC19h 20m
2026-07-07 DLH577 CPT → FRA Jul 7, 19:15 UTCJul 8, 03:10 UTC7h 55m
2026-07-07 DLH577 CPT → FRA Jul 7, 16:20 UTCJul 7, 16:40 UTC20m
2026-07-06 DLH576 FRA → CPT Jul 6, 20:50 UTCJul 7, 07:30 UTC10h 40m
2026-07-06 DLH543 BOG → FRA Jul 6, 04:55 UTCJul 6, 15:15 UTC10h 20m
2026-07-05 DLH542 - Jul 5, 23:55 UTCJul 6, 00:10 UTC15m
2026-07-05 DLH542 - Jul 5, 13:40 UTCJul 5, 15:35 UTC1h 55m
2026-07-04 DLH501 - Jul 4, 19:20 UTCJul 5, 06:10 UTC10h 50m
2026-07-03 DLH500 FRA → GIG Jul 3, 20:55 UTCJul 4, 07:55 UTC11h 0m
2026-07-02 DLH543 BOG → FRA Jul 2, 22:35 UTCJul 3, 15:05 UTC16h 30m
2026-07-02 DLH542 - Jul 2, 13:30 UTCJul 3, 07:05 UTC17h 35m
2026-07-01 DLH469 AUS → FRA Jul 1, 21:45 UTCJul 2, 06:45 UTC9h 0m
2026-07-01 DLH468 FRA → AUS Jul 1, 08:50 UTCJul 1, 19:10 UTC10h 20m
2026-06-29 DLH753 - Jun 29, 12:00 UTCJun 30, 07:30 UTC19h 31m
2026-06-27 DLH761 - Jun 27, 22:25 UTCJun 28, 06:15 UTC7h 50m
2026-06-27 DLH760 FRA → DEL Jun 27, 13:09 UTCJun 27, 20:09 UTC7h 0m
2026-06-26 DLH797 HKG → FRA Jun 26, 19:04 UTCJun 27, 04:29 UTC9h 25m
2026-06-26 DLH797 HKG → FRA Jun 26, 16:14 UTCJun 26, 16:35 UTC20m
2026-06-25 DLH796 FRA → HKG Jun 25, 20:05 UTCJun 26, 07:00 UTC10h 55m
2026-06-25 - FRA → FRA Jun 25, 14:39 UTCJun 25, 14:44 UTC5m
2026-06-24 DLH797 HKG → FRA Jun 24, 18:50 UTCJun 25, 03:59 UTC9h 10m
2026-06-24 DLH797 HKG → FRA Jun 24, 15:54 UTCJun 24, 16:09 UTC15m
2026-06-23 DLH796 FRA → HKG Jun 23, 20:04 UTCJun 24, 07:10 UTC11h 5m
2026-06-22 DLH543 BOG → FRA Jun 22, 22:19 UTCJun 23, 15:50 UTC17h 30m
2026-06-22 DLH543 BOG → FRA Jun 22, 16:40 UTCJun 23, 15:44 UTC23h 5m
2026-06-22 DLH542 - Jun 22, 13:14 UTCJun 22, 22:34 UTC9h 20m
2026-06-21 DLH752 FRA → HYD Jun 21, 11:49 UTCJun 22, 06:45 UTC18h 55m
2026-06-19 DLH542 - Jun 19, 14:19 UTCJun 20, 13:44 UTC23h 25m
2026-06-18 DLH761 DEL → FRA Jun 18, 21:45 UTCJun 19, 05:34 UTC7h 49m
2026-06-18 DLH760 FRA → DEL Jun 18, 12:00 UTCJun 18, 18:55 UTC6h 55m
2026-06-17 DLH6EE - Jun 17, 18:40 UTCJun 17, 19:15 UTC35m
2026-06-17 DLH4MW BER → FRA Jun 17, 16:20 UTCJun 17, 16:55 UTC35m
2026-06-17 DLH107 - Jun 17, 12:20 UTCJun 17, 12:55 UTC35m
2026-06-17 DLH7JF - Jun 17, 10:35 UTCJun 17, 11:10 UTC35m
2026-06-13 DLH543 BOG → FRA Jun 13, 07:15 UTCJun 13, 16:20 UTC9h 5m
2026-06-12 DLH542 FRA → BOG Jun 12, 13:30 UTCJun 13, 00:35 UTC11h 5m
2026-06-09 DLH797 HKG → FRA Jun 9, 21:10 UTCJun 10, 04:40 UTC7h 30m
2026-06-09 DLH796 FRA → HKG Jun 9, 06:30 UTCJun 9, 07:05 UTC35m
2026-06-08 DLH796 FRA → HKG Jun 8, 20:00 UTCJun 8, 23:40 UTC3h 40m
2026-06-08 DLH543 BOG → FRA Jun 8, 05:55 UTCJun 8, 14:45 UTC8h 50m

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.

Mode-S 3C4A0F frequently asked

What is Mode-S code 3C4A0F?
3C4A0F is an ICAO 24-bit transponder address. Allocated to Germany.
Where is Mode-S 3C4A0F registered?
Mode-S code 3C4A0F is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4A0F broadcasting right now?
Yes. Mode-S 3C4A0F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4A0F, octal 17045017, decimal 3,951,119.
What flights does 3C4A0F operate?
Mode-S 3C4A0F has broadcast 20 distinct callsigns, including DLH797, DLH796, DLH761, DLH760, DLH500.