Apparatus

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sensors Mode-S transponder

48B641

ICAO 24-bit transponder address · allocated to Poland

Currently assigned to SP-NTB · DIAMOND DA-20

Hex
48B641
Octal
22133101
Decimal
4,765,249
Country
PL
Tail
SP-NTB
Type
DV20
No current signal · last broadcast 19h ago
Flights observed
113
Distinct callsigns
1
Country
PL
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 48B641.

Country allocation

The ICAO 24-bit address 48B641 falls within the block assigned to Poland (PL) by ICAO Annex 10, Volume III. Every aircraft registered in Poland 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 1 distinct

Callsign Airline Flights Last seen
SPNTB - 113 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 SPNTB - Jul 17, 07:30 UTCJul 17, 07:40 UTC10m
2026-07-17 SPNTB - Jul 17, 05:25 UTCJul 17, 05:45 UTC20m
2026-07-16 SPNTB - Jul 16, 17:35 UTCJul 16, 17:54 UTC20m
2026-07-16 SPNTB - Jul 16, 13:54 UTCJul 16, 14:15 UTC20m
2026-07-15 SPNTB - Jul 15, 12:30 UTCJul 15, 12:55 UTC25m
2026-07-14 SPNTB - Jul 14, 15:50 UTCJul 14, 16:05 UTC15m
2026-07-14 SPNTB - Jul 14, 12:10 UTCJul 14, 12:30 UTC20m
2026-07-09 SPNTB - Jul 9, 20:10 UTCJul 9, 20:35 UTC25m
2026-07-06 SPNTB - Jul 6, 12:05 UTCJul 6, 12:30 UTC25m
2026-07-06 SPNTB - Jul 6, 10:00 UTCJul 6, 10:10 UTC10m
2026-07-03 SPNTB - Jul 3, 10:05 UTCJul 3, 10:20 UTC15m
2026-07-03 SPNTB - Jul 3, 05:55 UTCJul 3, 06:05 UTC10m
2026-06-25 SPNTB - Jun 25, 14:34 UTCJun 25, 15:04 UTC30m
2026-06-25 SPNTB - Jun 25, 12:04 UTCJun 25, 12:15 UTC10m
2026-06-25 SPNTB - Jun 25, 10:39 UTCJun 25, 11:10 UTC30m
2026-06-25 SPNTB - Jun 25, 09:10 UTCJun 25, 09:50 UTC40m
2026-06-25 SPNTB - Jun 25, 05:29 UTCJun 25, 05:50 UTC20m
2026-06-24 SPNTB - Jun 24, 19:34 UTCJun 24, 21:54 UTC2h 20m
2026-06-17 SPNTB - Jun 17, 16:05 UTCJun 17, 16:15 UTC10m
2026-06-17 SPNTB - Jun 17, 13:45 UTCJun 17, 14:00 UTC15m
2026-06-17 SPNTB - Jun 17, 11:20 UTCJun 17, 11:45 UTC25m
2026-06-17 SPNTB - Jun 17, 08:00 UTCJun 17, 09:05 UTC1h 5m
2026-06-17 SPNTB - Jun 17, 05:35 UTCJun 17, 06:40 UTC1h 5m
2026-06-10 SPNTB - Jun 10, 19:25 UTCJun 10, 20:10 UTC45m
2026-06-10 SPNTB - Jun 10, 15:55 UTCJun 10, 16:35 UTC40m
2026-06-10 SPNTB - Jun 10, 08:20 UTCJun 10, 08:50 UTC30m
2026-06-10 SPNTB - Jun 10, 05:30 UTCJun 10, 07:15 UTC1h 45m
2026-06-09 SPNTB - Jun 9, 13:50 UTCJun 9, 14:15 UTC25m
2026-06-09 SPNTB - Jun 9, 11:45 UTCJun 9, 12:10 UTC25m
2026-06-09 SPNTB - Jun 9, 10:35 UTCJun 9, 11:05 UTC30m
2026-06-09 SPNTB - Jun 9, 09:30 UTCJun 9, 09:40 UTC10m
2026-06-09 SPNTB - Jun 9, 07:20 UTCJun 9, 07:35 UTC15m
2026-06-09 SPNTB - Jun 9, 04:35 UTCJun 9, 04:50 UTC15m
2026-06-08 SPNTB - Jun 8, 14:40 UTCJun 8, 14:55 UTC15m
2026-06-08 SPNTB - Jun 8, 12:20 UTCJun 8, 12:40 UTC20m
2026-06-08 SPNTB - Jun 8, 10:35 UTCJun 8, 11:00 UTC25m
2026-06-08 SPNTB - Jun 8, 09:10 UTCJun 8, 09:30 UTC20m
2026-06-08 SPNTB - Jun 8, 07:50 UTCJun 8, 08:00 UTC10m
2026-06-08 SPNTB - Jun 8, 05:30 UTCJun 8, 05:50 UTC20m
2026-06-03 SPNTB - Jun 3, 12:20 UTCJun 3, 12:40 UTC20m
2026-06-03 SPNTB - Jun 3, 08:50 UTCJun 3, 09:10 UTC20m
2026-06-01 SPNTB - Jun 1, 13:25 UTCJun 1, 14:10 UTC45m
2026-06-01 SPNTB - Jun 1, 09:35 UTCJun 1, 10:00 UTC25m
2026-05-29 SPNTB - May 29, 10:25 UTCMay 29, 11:00 UTC35m
2026-05-29 SPNTB - May 29, 08:55 UTCMay 29, 09:20 UTC25m
2026-05-27 SPNTB - May 27, 12:15 UTCMay 27, 12:25 UTC10m
2026-05-27 SPNTB - May 27, 10:25 UTCMay 27, 10:50 UTC25m
2026-05-27 SPNTB - May 27, 07:00 UTCMay 27, 07:15 UTC15m
2026-05-27 SPNTB - May 27, 04:45 UTCMay 27, 05:04 UTC20m
2026-05-26 SPNTB - May 26, 20:40 UTCMay 26, 21:14 UTC35m

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 SP-NTB page for operator, model, and routing details .

Mode-S 48B641 frequently asked

What is Mode-S code 48B641?
48B641 is an ICAO 24-bit transponder address. Allocated to Poland. Assigned to SP-NTB.
Where is Mode-S 48B641 registered?
Mode-S code 48B641 is allocated to Poland (PL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 48B641 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 48B641, octal 22133101, decimal 4,765,249.
What flights does 48B641 operate?
Mode-S 48B641 has broadcast 1 distinct callsign, including SPNTB.