Apparatus

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sensors Mode-S transponder

3C4B33

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYS · BOEING 747-8

Hex
3C4B33
Octal
17045463
Decimal
3,951,411
Country
DE
Tail
D-ABYS
Type
B748
No current signal · last broadcast 59m ago
Flights observed
79
Distinct callsigns
20
Country
DE
Last broadcast
59m ago

Last known position

Most recent position reported by Mode-S 3C4B33.

Country allocation

The ICAO 24-bit address 3C4B33 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
DLH510 - 14 2026-07-12
DLH511 - 11 2026-07-13
DLH499 Lufthansa 6 2026-07-06
DLH498 Lufthansa 6 2026-07-05
DLH573 Lufthansa 5 2026-07-07
DLH572 - 4 2026-07-06
DLH507 - 4 2026-07-11
DLH506 - 4 2026-07-10
DLH717 - 3 2026-07-10
DLH716 - 3 2026-07-09
DLH9922 Lufthansa 2 2026-04-16
DLH463 - 2 2026-07-08
DLH462 - 2 2026-07-08
DLH431 - 2 2026-06-23
DLH402 Lufthansa 2 2026-06-10
DLH1591 Lufthansa 2 2026-05-30
DLH9911 Lufthansa 1 2026-05-30
DLH457 Lufthansa 1 2026-06-11
DLH456 Lufthansa 1 2026-06-11
DLH455 Lufthansa 1 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DLH511 - Jul 13, 19:45 UTCJul 14, 08:05 UTC12h 20m
2026-07-12 DLH510 FRA → EZE Jul 12, 20:05 UTCJul 13, 09:20 UTC13h 15m
2026-07-11 DLH507 - Jul 11, 21:45 UTCJul 12, 08:10 UTC10h 25m
2026-07-10 DLH506 - Jul 10, 20:30 UTCJul 11, 07:40 UTC11h 10m
2026-07-10 DLH717 HND → FRA Jul 10, 03:40 UTCJul 10, 17:25 UTC13h 45m
2026-07-09 DLH716 FRA → HND Jul 9, 13:00 UTCJul 10, 00:45 UTC11h 45m
2026-07-08 DLH463 - Jul 8, 21:30 UTCJul 9, 06:05 UTC8h 35m
2026-07-08 DLH462 - Jul 8, 09:35 UTCJul 8, 19:00 UTC9h 25m
2026-07-07 DLH573 JNB → FRA Jul 7, 17:15 UTCJul 8, 03:15 UTC10h 0m
2026-07-06 DLH572 - Jul 6, 20:35 UTCJul 7, 06:25 UTC9h 50m
2026-07-06 DLH499 MEX → FRA Jul 6, 02:35 UTCJul 6, 12:40 UTC10h 5m
2026-07-05 DLH498 FRA → MEX Jul 5, 12:10 UTCJul 5, 23:40 UTC11h 30m
2026-07-04 DLH573 JNB → FRA Jul 4, 17:50 UTCJul 5, 03:40 UTC9h 50m
2026-07-03 DLH572 - Jul 3, 21:00 UTCJul 4, 06:50 UTC9h 50m
2026-07-03 DLH717 HND → FRA Jul 3, 04:05 UTCJul 3, 17:30 UTC13h 25m
2026-07-02 DLH716 FRA → HND Jul 2, 13:45 UTCJul 3, 01:45 UTC12h 0m
2026-07-01 DLH511 EZE → FRA Jul 1, 22:10 UTCJul 2, 08:55 UTC10h 45m
2026-07-01 DLH511 EZE → FRA Jul 1, 19:55 UTCJul 1, 20:15 UTC20m
2026-07-01 DLH510 - Jul 1, 12:30 UTCJul 1, 13:20 UTC50m
2026-06-30 DLH510 - Jun 30, 20:35 UTCJul 1, 09:55 UTC13h 20m
2026-06-30 DLH499 MEX → FRA Jun 30, 04:20 UTCJun 30, 14:30 UTC10h 10m
2026-06-29 DLH498 FRA → MEX Jun 29, 12:49 UTCJun 30, 00:04 UTC11h 15m
2026-06-28 DLH511 EZE → FRA Jun 28, 19:44 UTCJun 29, 08:35 UTC12h 50m
2026-06-27 DLH510 FRA → EZE Jun 27, 20:14 UTCJun 28, 09:30 UTC13h 15m
2026-06-27 DLH499 MEX → FRA Jun 27, 02:55 UTCJun 27, 13:00 UTC10h 5m
2026-06-26 DLH498 FRA → MEX Jun 26, 12:19 UTCJun 26, 23:44 UTC11h 25m
2026-06-25 DLH507 - Jun 25, 21:50 UTCJun 26, 08:24 UTC10h 35m
2026-06-24 DLH506 FRA → GRU Jun 24, 20:40 UTCJun 25, 07:34 UTC10h 55m
2026-06-23 DLH431 - Jun 23, 00:00 UTCJun 23, 05:24 UTC5h 25m
2026-06-22 DLH431 - Jun 22, 22:05 UTCJun 22, 23:55 UTC1h 50m
2026-06-22 DLH430 FRA → ORD Jun 22, 09:49 UTCJun 22, 18:19 UTC8h 30m
2026-06-21 DLH463 - Jun 21, 22:15 UTCJun 22, 06:10 UTC7h 55m
2026-06-21 DLH462 FRA → MIA Jun 21, 09:40 UTCJun 21, 19:09 UTC9h 30m
2026-06-20 DLH499 MEX → FRA Jun 20, 04:20 UTCJun 20, 14:19 UTC10h 0m
2026-06-19 DLH498 FRA → MEX Jun 19, 13:09 UTCJun 20, 00:54 UTC11h 45m
2026-06-18 DLH511 EZE → FRA Jun 18, 19:50 UTCJun 19, 08:34 UTC12h 44m
2026-06-17 DLH510 FRA → EZE Jun 17, 20:55 UTCJun 18, 10:15 UTC13h 20m
2026-06-16 DLH511 EZE → FRA Jun 16, 19:45 UTCJun 17, 08:05 UTC12h 21m
2026-06-15 DLH510 FRA → EZE Jun 15, 20:25 UTCJun 16, 09:45 UTC13h 20m
2026-06-15 DLH499 MEX → FRA Jun 15, 02:35 UTCJun 15, 12:35 UTC10h 0m
2026-06-14 DLH498 FRA → MEX Jun 14, 12:20 UTCJun 14, 23:44 UTC11h 24m
2026-06-13 DLH511 EZE → FRA Jun 13, 19:55 UTCJun 14, 08:30 UTC12h 36m
2026-06-12 DLH510 FRA → EZE Jun 12, 20:20 UTCJun 13, 09:25 UTC13h 4m
2026-06-11 DLH457 LAX → FRA Jun 11, 22:35 UTCJun 12, 08:30 UTC9h 56m
2026-06-11 DLH456 FRA → LAX Jun 11, 09:20 UTCJun 11, 20:10 UTC10h 50m
2026-06-10 DLH403 EWR → FRA Jun 10, 22:45 UTCJun 11, 05:10 UTC6h 25m
2026-06-10 DLH402 FRA → EWR Jun 10, 18:30 UTCJun 10, 19:45 UTC1h 15m
2026-06-10 DLH402 FRA → EWR Jun 10, 12:00 UTCJun 10, 18:25 UTC6h 25m
2026-06-09 DLH455 SFO → FRA Jun 9, 22:35 UTCJun 10, 08:15 UTC9h 40m
2026-06-09 DLH454 FRA → SFO Jun 9, 09:05 UTCJun 9, 19:35 UTC10h 30m

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

Mode-S 3C4B33 frequently asked

What is Mode-S code 3C4B33?
3C4B33 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYS.
Where is Mode-S 3C4B33 registered?
Mode-S code 3C4B33 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B33 broadcasting right now?
No active broadcast right now. Last signal was 59m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B33, octal 17045463, decimal 3,951,411.
What flights does 3C4B33 operate?
Mode-S 3C4B33 has broadcast 20 distinct callsigns, including DLH510, DLH511, DLH499, DLH498, DLH573.