Apparatus

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sensors Mode-S transponder

4B23E0

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-NPG · PIPSTREL Virus

Hex
4B23E0
Octal
22621740
Decimal
4,924,384
Country
CH
Tail
HB-NPG
Type
PIVI
Broadcasting now · callsign HBNPG · 6,675 ft
Flights observed
96
Distinct callsigns
1
Country
CH
Last broadcast
1d ago

Current position

4B23E0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B23E0 falls within the block assigned to Switzerland (CH) by ICAO Annex 10, Volume III. Every aircraft registered in Switzerland 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
HBNPG - 96 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 HBNPG - Jul 17, 09:30 UTCJul 17, 11:55 UTC2h 25m
2026-07-16 HBNPG - Jul 16, 12:00 UTCJul 16, 12:30 UTC30m
2026-07-16 HBNPG - Jul 16, 08:20 UTCJul 16, 10:15 UTC1h 55m
2026-07-15 HBNPG - Jul 15, 16:40 UTCJul 15, 18:05 UTC1h 25m
2026-07-15 HBNPG - Jul 15, 08:55 UTCJul 15, 09:35 UTC40m
2026-07-14 HBNPG - Jul 14, 17:25 UTCJul 14, 18:00 UTC35m
2026-07-14 HBNPG - Jul 14, 10:50 UTCJul 14, 11:00 UTC10m
2026-07-14 HBNPG - Jul 14, 09:00 UTCJul 14, 09:30 UTC30m
2026-07-14 HBNPG - Jul 14, 07:40 UTCJul 14, 08:00 UTC20m
2026-07-13 HBNPG - Jul 13, 13:25 UTCJul 13, 14:15 UTC50m
2026-07-13 HBNPG - Jul 13, 08:45 UTCJul 13, 09:45 UTC1h 0m
2026-07-12 HBNPG - Jul 12, 07:10 UTCJul 12, 07:55 UTC45m
2026-07-11 HBNPG - Jul 11, 14:45 UTCJul 11, 15:25 UTC40m
2026-07-11 HBNPG - Jul 11, 07:50 UTCJul 11, 09:20 UTC1h 30m
2026-07-09 HBNPG - Jul 9, 17:20 UTCJul 9, 17:40 UTC20m
2026-07-09 HBNPG - Jul 9, 14:45 UTCJul 9, 16:25 UTC1h 40m
2026-07-09 HBNPG - Jul 9, 07:25 UTCJul 9, 09:10 UTC1h 45m
2026-07-09 HBNPG - Jul 9, 06:30 UTCJul 9, 06:45 UTC15m
2026-07-07 HBNPG - Jul 7, 16:40 UTCJul 7, 17:00 UTC20m
2026-07-07 HBNPG - Jul 7, 14:40 UTCJul 7, 15:30 UTC50m
2026-07-07 HBNPG - Jul 7, 11:50 UTCJul 7, 12:35 UTC45m
2026-07-06 HBNPG - Jul 6, 13:50 UTCJul 6, 14:15 UTC25m
2026-07-06 HBNPG - Jul 6, 09:55 UTCJul 6, 10:40 UTC45m
2026-07-06 HBNPG - Jul 6, 07:15 UTCJul 6, 08:15 UTC1h 0m
2026-07-05 HBNPG - Jul 5, 09:20 UTCJul 5, 10:00 UTC40m
2026-07-05 HBNPG - Jul 5, 07:00 UTCJul 5, 07:20 UTC20m
2026-07-04 HBNPG - Jul 4, 09:10 UTCJul 4, 10:20 UTC1h 10m
2026-07-04 HBNPG - Jul 4, 07:40 UTCJul 4, 08:00 UTC20m
2026-07-01 HBNPG - Jul 1, 17:15 UTCJul 1, 17:50 UTC35m
2026-06-30 HBNPG - Jun 30, 14:30 UTCJun 30, 15:10 UTC40m
2026-06-29 HBNPG - Jun 29, 10:50 UTCJun 29, 11:10 UTC20m
2026-06-28 HBNPG - Jun 28, 09:20 UTCJun 28, 09:39 UTC20m
2026-06-28 HBNPG - Jun 28, 07:09 UTCJun 28, 08:19 UTC1h 10m
2026-06-26 HBNPG - Jun 26, 18:44 UTCJun 26, 19:20 UTC35m
2026-06-26 HBNPG - Jun 26, 17:00 UTCJun 26, 17:25 UTC25m
2026-06-24 HBNPG - Jun 24, 16:14 UTCJun 24, 16:34 UTC20m
2026-06-24 HBNPG - Jun 24, 08:09 UTCJun 24, 08:39 UTC30m
2026-06-22 HBNPG - Jun 22, 14:49 UTCJun 22, 15:50 UTC1h 0m
2026-06-22 HBNPG - Jun 22, 10:49 UTCJun 22, 11:24 UTC35m
2026-06-22 HBNPG - Jun 22, 09:40 UTCJun 22, 10:00 UTC20m
2026-06-22 HBNPG - Jun 22, 08:35 UTCJun 22, 09:04 UTC30m
2026-06-18 HBNPG - Jun 18, 17:10 UTCJun 18, 17:50 UTC40m
2026-06-14 HBNPG - Jun 14, 08:00 UTCJun 14, 08:35 UTC35m
2026-06-13 HBNPG - Jun 13, 11:55 UTCJun 13, 12:25 UTC30m
2026-06-13 HBNPG - Jun 13, 09:05 UTCJun 13, 09:45 UTC40m
2026-06-13 HBNPG - Jun 13, 07:45 UTCJun 13, 08:00 UTC15m
2026-06-11 HBNPG - Jun 11, 09:55 UTCJun 11, 10:15 UTC20m
2026-06-11 HBNPG - Jun 11, 07:20 UTCJun 11, 07:40 UTC20m
2026-06-09 HBNPG - Jun 9, 17:15 UTCJun 9, 18:00 UTC45m
2026-06-07 HBNPG - Jun 7, 16:30 UTCJun 7, 16:55 UTC25m

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 HB-NPG page for operator, model, and routing details .

Mode-S 4B23E0 frequently asked

What is Mode-S code 4B23E0?
4B23E0 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-NPG.
Where is Mode-S 4B23E0 registered?
Mode-S code 4B23E0 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B23E0 broadcasting right now?
Yes. Mode-S 4B23E0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B23E0, octal 22621740, decimal 4,924,384.
What flights does 4B23E0 operate?
Mode-S 4B23E0 has broadcast 1 distinct callsign, including HBNPG.