Apparatus

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sensors Mode-S transponder

3C4B32

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYR · BOEING 747-8

Hex
3C4B32
Octal
17045462
Decimal
3,951,410
Country
DE
Tail
D-ABYR
Type
B748
No current signal · last broadcast 1h ago
Flights observed
78
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3C4B32.

Country allocation

The ICAO 24-bit address 3C4B32 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
DLH717 - 8 2026-07-14
DLH716 - 8 2026-07-13
DLH511 - 6 2026-07-12
DLH510 - 5 2026-07-11
DLH507 - 4 2026-07-15
DLH573 Lufthansa 3 2026-06-17
DLH572 - 3 2026-06-16
DLH506 - 3 2026-07-14
DLH499 Lufthansa 3 2026-06-29
DLH457 - 3 2026-07-05
DLH456 Lufthansa 3 2026-07-05
DLH431 - 3 2026-07-20
DLH430 - 3 2026-07-19
DLH511D - 2 2026-06-22
DLH498 Lufthansa 2 2026-06-28
DLH463 - 2 2026-06-18
DLH462 Lufthansa 2 2026-06-18
DLH455 - 2 2026-07-17
DLH454 - 2 2026-07-17
DLH403 Lufthansa 2 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 DLH431 - Jul 20, 01:00 UTCJul 20, 08:30 UTC7h 30m
2026-07-19 DLH430 - Jul 19, 09:40 UTCJul 19, 18:05 UTC8h 25m
2026-07-18 DLH403 EWR → FRA Jul 18, 23:10 UTCJul 19, 06:00 UTC6h 50m
2026-07-18 DLH402 FRA → EWR Jul 18, 12:10 UTCJul 18, 19:50 UTC7h 40m
2026-07-17 DLH455 - Jul 17, 22:29 UTCJul 18, 08:15 UTC9h 46m
2026-07-17 DLH454 - Jul 17, 08:59 UTCJul 17, 19:55 UTC10h 55m
2026-07-16 DLH423 BOS → FRA Jul 16, 22:59 UTCJul 17, 05:39 UTC6h 40m
2026-07-16 DLH7K FRA → BOS Jul 16, 12:34 UTCJul 16, 19:40 UTC7h 5m
2026-07-15 DLH507 - Jul 15, 21:40 UTCJul 16, 08:20 UTC10h 40m
2026-07-14 DLH506 FRA → GRU Jul 14, 20:45 UTCJul 15, 08:10 UTC11h 24m
2026-07-14 DLH717 HND → FRA Jul 14, 03:10 UTCJul 14, 16:35 UTC13h 25m
2026-07-13 DLH716 FRA → HND Jul 13, 12:30 UTCJul 14, 00:30 UTC12h 0m
2026-07-12 DLH511 - Jul 12, 19:55 UTCJul 13, 08:05 UTC12h 10m
2026-07-11 DLH510 FRA → EZE Jul 11, 20:25 UTCJul 12, 09:55 UTC13h 30m
2026-07-09 DLH403 EWR → FRA Jul 9, 23:00 UTCJul 10, 05:40 UTC6h 40m
2026-07-09 DLH402 FRA → EWR Jul 9, 12:05 UTCJul 9, 19:45 UTC7h 40m
2026-07-08 DLH511 EZE → FRA Jul 8, 19:50 UTCJul 9, 08:25 UTC12h 35m
2026-07-07 DLH510 FRA → EZE Jul 7, 20:10 UTCJul 8, 09:10 UTC13h 0m
2026-07-07 DLH717 HND → FRA Jul 7, 03:25 UTCJul 7, 16:50 UTC13h 25m
2026-07-06 DLH716 FRA → HND Jul 6, 12:25 UTCJul 7, 00:20 UTC11h 55m
2026-07-05 DLH457 - Jul 5, 22:35 UTCJul 6, 08:30 UTC9h 55m
2026-07-05 DLH456 FRA → LAX Jul 5, 09:10 UTCJul 5, 20:05 UTC10h 55m
2026-07-03 DLH507 - Jul 3, 21:40 UTCJul 4, 08:25 UTC10h 45m
2026-07-02 DLH506 FRA → GRU Jul 2, 20:50 UTCJul 3, 07:45 UTC10h 55m
2026-07-02 DLH717 HND → FRA Jul 2, 04:00 UTCJul 2, 17:25 UTC13h 25m
2026-07-01 DLH716 FRA → HND Jul 1, 12:40 UTCJul 2, 00:50 UTC12h 10m
2026-06-30 DLH511 EZE → FRA Jun 30, 21:15 UTCJul 1, 08:40 UTC11h 25m
2026-06-30 DLH511 EZE → FRA Jun 30, 19:55 UTCJun 30, 20:20 UTC25m
2026-06-29 DLH510 FRA → EZE Jun 29, 20:09 UTCJun 30, 09:20 UTC13h 10m
2026-06-29 DLH499 MEX → FRA Jun 29, 02:50 UTCJun 29, 12:39 UTC9h 50m
2026-06-28 DLH498 FRA → MEX Jun 28, 12:05 UTCJun 28, 22:59 UTC10h 55m
2026-06-27 DLH511 EZE → FRA Jun 27, 19:45 UTCJun 28, 08:19 UTC12h 35m
2026-06-26 DLH510 FRA → EZE Jun 26, 20:55 UTCJun 27, 09:55 UTC13h 0m
2026-06-25 DLH455 SFO → FRA Jun 25, 22:34 UTCJun 26, 08:45 UTC10h 10m
2026-06-25 DLH454 FRA → SFO Jun 25, 09:05 UTCJun 25, 19:34 UTC10h 30m
2026-06-23 DLH457 - Jun 23, 22:40 UTCJun 24, 08:49 UTC10h 10m
2026-06-23 DLH456 FRA → LAX Jun 23, 09:29 UTCJun 23, 20:19 UTC10h 50m
2026-06-22 DLH511D - Jun 22, 14:14 UTCJun 22, 17:04 UTC2h 50m
2026-06-22 DLH511D - Jun 22, 04:15 UTCJun 22, 09:00 UTC4h 45m
2026-06-21 DLH510D FRA → EZE Jun 21, 12:35 UTCJun 22, 01:35 UTC13h 0m
2026-06-20 DLH717 HND → FRA Jun 20, 03:44 UTCJun 20, 17:29 UTC13h 45m
2026-06-19 DLH716 FRA → HND Jun 19, 12:44 UTCJun 20, 01:19 UTC12h 35m
2026-06-18 DLH463 - Jun 18, 21:20 UTCJun 19, 05:40 UTC8h 19m
2026-06-18 DLH462 FRA → MIA Jun 18, 09:15 UTCJun 18, 18:45 UTC9h 30m
2026-06-17 DLH573 JNB → FRA Jun 17, 17:25 UTCJun 18, 03:25 UTC10h 0m
2026-06-16 DLH572 - Jun 16, 20:35 UTCJun 17, 06:10 UTC9h 35m
2026-06-16 DLH717 HND → FRA Jun 16, 03:15 UTCJun 16, 16:25 UTC13h 10m
2026-06-15 DLH716 FRA → HND Jun 15, 12:39 UTCJun 16, 00:55 UTC12h 15m
2026-06-14 DLH511 EZE → FRA Jun 14, 19:45 UTCJun 15, 08:20 UTC12h 34m
2026-06-13 DLH510 FRA → EZE Jun 13, 20:10 UTCJun 14, 09:35 UTC13h 25m

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

Mode-S 3C4B32 frequently asked

What is Mode-S code 3C4B32?
3C4B32 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYR.
Where is Mode-S 3C4B32 registered?
Mode-S code 3C4B32 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B32 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B32, octal 17045462, decimal 3,951,410.
What flights does 3C4B32 operate?
Mode-S 3C4B32 has broadcast 20 distinct callsigns, including DLH717, DLH716, DLH511, DLH510, DLH507.