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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 Jul 26, 17:45 UTC
Flights observed
96
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 17:45 UTC

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 Lufthansa 16 2026-07-21
DLH511 Lufthansa 13 2026-07-22
DLH499 Lufthansa 7 2026-07-25
DLH498 Lufthansa 7 2026-07-24
DLH573 Lufthansa 6 2026-07-26
DLH572 Lufthansa 5 2026-07-25
DLH507 - 4 2026-07-11
DLH506 - 4 2026-07-10
DLH402 - 4 2026-07-15
DLH717 - 3 2026-07-10
DLH716 - 3 2026-07-09
DLH463 - 3 2026-07-16
DLH462 - 3 2026-07-16
DLH454 - 3 2026-07-18
DLH403 - 3 2026-07-15
DLH9922 Lufthansa 2 2026-04-16
DLH455 Lufthansa 2 2026-07-19
DLH431 - 2 2026-06-23
DLH1591 Lufthansa 2 2026-05-30
DLH9911 Lufthansa 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH573 JNB → FRA Jul 26, 17:20 UTCJul 26, 17:45 UTC25m
2026-07-25 DLH572 FRA → JNB Jul 25, 20:30 UTCJul 26, 06:25 UTC9h 55m
2026-07-25 DLH499 MEX → FRA Jul 25, 02:30 UTCJul 25, 12:30 UTC10h 0m
2026-07-24 DLH498 FRA → MEX Jul 24, 12:00 UTCJul 24, 22:35 UTC10h 35m
2026-07-22 DLH511 EZE → FRA Jul 22, 19:50 UTCJul 23, 08:20 UTC12h 30m
2026-07-21 DLH510 FRA → EZE Jul 21, 20:00 UTCJul 22, 01:15 UTC5h 15m
2026-07-21 DLH511 - Jul 21, 01:40 UTCJul 21, 14:05 UTC12h 25m
2026-07-19 DLH510 FRA → EZE Jul 19, 20:35 UTCJul 20, 10:05 UTC13h 30m
2026-07-19 DLH455 SFO → FRA Jul 19, 02:30 UTCJul 19, 12:10 UTC9h 40m
2026-07-18 DLH454 - Jul 18, 18:40 UTCJul 19, 00:00 UTC5h 20m
2026-07-18 DLH454 FRA → YUL Jul 18, 09:10 UTCJul 18, 16:45 UTC7h 35m
2026-07-16 DLH463 - Jul 16, 21:50 UTCJul 17, 06:15 UTC8h 25m
2026-07-16 DLH462 FRA → MIA Jul 16, 09:30 UTCJul 16, 18:44 UTC9h 15m
2026-07-15 DLH403 EWR → FRA Jul 15, 23:15 UTCJul 16, 06:00 UTC6h 45m
2026-07-15 DLH402 FRA → EWR Jul 15, 12:05 UTCJul 15, 19:35 UTC7h 30m
2026-07-14 DLH403 EWR → FRA Jul 14, 22:30 UTCJul 15, 05:35 UTC7h 4m
2026-07-14 DLH402 FRA → EWR Jul 14, 12:10 UTCJul 14, 19:40 UTC7h 30m
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

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 Jul 26, 17:45 UTC.
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.