Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3C4B2B

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYK · BOEING 747-8

Hex
3C4B2B
Octal
17045453
Decimal
3,951,403
Country
DE
Tail
D-ABYK
Type
B748
No current signal · last broadcast 17h ago
Flights observed
105
Distinct callsigns
20
Country
DE
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 3C4B2B.

Country allocation

The ICAO 24-bit address 3C4B2B 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
DLH499 - 11 2026-07-10
DLH573 - 9 2026-07-11
DLH572 - 9 2026-07-10
DLH430 Lufthansa 9 2026-06-20
DLH498 - 8 2026-07-09
DLH463 - 8 2026-07-03
DLH431 - 8 2026-06-20
DLH462 Lufthansa 7 2026-07-03
DLH457 - 6 2026-07-04
DLH456 Lufthansa 6 2026-07-04
DLH507 - 4 2026-06-28
DLH506 Lufthansa 4 2026-06-27
DLH455 - 4 2026-07-14
DLH454 - 4 2026-07-13
DLH781 Lufthansa 1 2026-05-16
DLH780 Lufthansa 1 2026-05-15
DLH471 - 1 2026-06-14
DLH470 Lufthansa 1 2026-06-13
DLH419 - 1 2026-06-15
DLH403 - 1 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DLH455 SFO → FRA Jul 14, 02:00 UTCJul 14, 11:35 UTC9h 35m
2026-07-13 DLH454 - Jul 13, 12:05 UTCJul 13, 23:10 UTC11h 5m
2026-07-11 DLH573 - Jul 11, 17:25 UTCJul 12, 03:20 UTC9h 55m
2026-07-10 DLH572 - Jul 10, 20:45 UTCJul 11, 06:20 UTC9h 35m
2026-07-10 DLH499 MEX → FRA Jul 10, 02:25 UTCJul 10, 12:30 UTC10h 5m
2026-07-09 DLH498 - Jul 9, 12:05 UTCJul 9, 23:25 UTC11h 20m
2026-07-04 DLH457 - Jul 4, 22:40 UTCJul 5, 08:40 UTC10h 0m
2026-07-04 DLH456 FRA → LAX Jul 4, 09:15 UTCJul 4, 20:15 UTC11h 0m
2026-07-03 DLH463 - Jul 3, 21:15 UTCJul 4, 05:30 UTC8h 15m
2026-07-03 DLH462 FRA → MIA Jul 3, 09:35 UTCJul 3, 18:40 UTC9h 5m
2026-07-01 DLH463 - Jul 1, 23:25 UTCJul 2, 07:45 UTC8h 20m
2026-07-01 DLH462 FRA → MIA Jul 1, 09:20 UTCJul 1, 18:40 UTC9h 20m
2026-06-30 DLH573 JNB → FRA Jun 30, 17:40 UTCJul 1, 03:35 UTC9h 55m
2026-06-29 DLH572 - Jun 29, 20:30 UTCJun 30, 06:20 UTC9h 50m
2026-06-28 DLH507 - Jun 28, 21:50 UTCJun 29, 08:24 UTC10h 35m
2026-06-27 DLH506 FRA → GRU Jun 27, 20:59 UTCJun 28, 08:09 UTC11h 10m
2026-06-23 DLH573 JNB → FRA Jun 23, 17:25 UTCJun 24, 03:19 UTC9h 55m
2026-06-22 DLH572 FRA → JNB Jun 22, 20:44 UTCJun 23, 06:49 UTC10h 5m
2026-06-22 DLH499 MEX → FRA Jun 22, 02:45 UTCJun 22, 12:34 UTC9h 50m
2026-06-21 DLH498 FRA → MEX Jun 21, 12:49 UTCJun 21, 23:59 UTC11h 10m
2026-06-20 DLH431 PWK → FRA Jun 20, 21:40 UTCJun 21, 05:15 UTC7h 35m
2026-06-20 DLH430 FRA → ORD Jun 20, 09:34 UTCJun 20, 17:54 UTC8h 20m
2026-06-19 DLH431 - Jun 19, 21:59 UTCJun 20, 04:44 UTC6h 45m
2026-06-19 DLH430 FRA → ORD Jun 19, 09:24 UTCJun 19, 17:49 UTC8h 25m
2026-06-17 DLH457 - Jun 17, 23:00 UTCJun 18, 09:15 UTC10h 15m
2026-06-17 DLH456 FRA → LAX Jun 17, 09:40 UTCJun 17, 20:30 UTC10h 50m
2026-06-16 DLH463 - Jun 16, 22:15 UTCJun 17, 06:20 UTC8h 5m
2026-06-16 DLH462 FRA → MIA Jun 16, 10:04 UTCJun 16, 19:30 UTC9h 25m
2026-06-15 DLH419 IAD → FRA Jun 15, 23:50 UTCJun 16, 06:45 UTC6h 55m
2026-06-15 DLH3W - Jun 15, 12:55 UTCJun 15, 21:20 UTC8h 25m
2026-06-14 DLH403 EWR → FRA Jun 14, 22:30 UTCJun 15, 05:04 UTC6h 34m
2026-06-14 DLH402 FRA → EWR Jun 14, 12:10 UTCJun 14, 19:45 UTC7h 35m
2026-06-14 DLH471 YYZ → FRA Jun 14, 01:20 UTCJun 14, 08:10 UTC6h 50m
2026-06-13 DLH470 FRA → YYZ Jun 13, 14:25 UTCJun 13, 22:10 UTC7h 45m
2026-06-12 DLH455 SFO → FRA Jun 12, 22:25 UTCJun 13, 08:30 UTC10h 4m
2026-06-12 DLH454 FRA → SFO Jun 12, 09:20 UTCJun 12, 19:45 UTC10h 25m
2026-06-09 DLH573 JNB → FRA Jun 9, 17:45 UTCJun 10, 03:30 UTC9h 45m
2026-06-08 DLH572 FRA → JNB Jun 8, 20:30 UTCJun 9, 06:15 UTC9h 45m
2026-06-07 DLH499 MEX → FRA Jun 7, 02:35 UTCJun 7, 12:40 UTC10h 5m
2026-06-06 DLH498 FRA → MEX Jun 6, 12:20 UTCJun 6, 23:24 UTC11h 5m
2026-06-05 DLH507 GRU → FRA Jun 5, 21:45 UTCJun 6, 08:35 UTC10h 50m
2026-06-04 DLH506 FRA → GRU Jun 4, 20:55 UTCJun 5, 08:05 UTC11h 10m
2026-06-03 DLH455 SFO → FRA Jun 3, 22:55 UTCJun 4, 08:40 UTC9h 45m
2026-06-03 DLH454 FRA → SFO Jun 3, 09:05 UTCJun 3, 19:35 UTC10h 30m
2026-06-02 DLH431 ORD → FRA Jun 2, 21:55 UTCJun 3, 05:35 UTC7h 40m
2026-06-02 DLH430 FRA → ORD Jun 2, 09:50 UTCJun 2, 17:45 UTC7h 55m
2026-06-01 DLH463 MIA → FRA Jun 1, 21:45 UTCJun 2, 05:30 UTC7h 45m
2026-06-01 DLH462 FRA → MIA Jun 1, 09:30 UTCJun 1, 18:45 UTC9h 15m
2026-05-30 DLH507 GRU → FRA May 30, 22:05 UTCMay 31, 09:30 UTC11h 25m
2026-05-29 DLH506 FRA → GRU May 29, 21:00 UTCMay 30, 08:00 UTC11h 0m

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

Mode-S 3C4B2B frequently asked

What is Mode-S code 3C4B2B?
3C4B2B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYK.
Where is Mode-S 3C4B2B registered?
Mode-S code 3C4B2B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B2B broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B2B, octal 17045453, decimal 3,951,403.
What flights does 3C4B2B operate?
Mode-S 3C4B2B has broadcast 20 distinct callsigns, including DLH499, DLH573, DLH572, DLH430, DLH498.