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sensors Mode-S transponder

4B1A28

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXO · AIRBUS A-320

Hex
4B1A28
Octal
22615050
Decimal
4,921,896
Country
CH
Tail
HB-JXO
Type
A320
Broadcasting now · callsign EZS48DR · 35,000 ft
Flights observed
617
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 21:10 UTC

Current position

4B1A28 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1A28 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 20 distinct

Callsign Airline Flights Last seen
EZS68ME - 8 2026-07-26
EZS52RH - 8 2026-07-26
EZS64QE Easyjet Switzerland 7 2026-07-22
EZS27BL Easyjet Switzerland 7 2026-07-22
EJU59FZ easyJet Europe 7 2026-05-25
EJU39XA - 7 2026-05-25
EZS89GX - 6 2026-07-12
EZS73TU - 6 2026-07-09
EZS53VN Easyjet Switzerland 6 2026-05-24
EZS51BG Easyjet Switzerland 6 2026-05-24
EZS45MR Easyjet Switzerland 6 2026-07-23
EZS34PY - 6 2026-07-09
EZS14LH - 6 2026-05-26
EZS12XR Easyjet Switzerland 6 2026-05-26
EZS85YX Easyjet Switzerland 5 2026-07-26
EZS74UB - 5 2026-07-22
EZS72ZY - 5 2026-07-11
EZS62HY Easyjet Switzerland 5 2026-05-27
EZS54KG - 5 2026-07-22
EZS51PA - 5 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS28NQ NAP → BSL Jul 26, 19:45 UTCJul 26, 21:05 UTC1h 20m
2026-07-26 EZS83UF BSL → NAP Jul 26, 17:20 UTCJul 26, 18:30 UTC1h 10m
2026-07-26 EZS68ME - Jul 26, 14:30 UTCJul 26, 16:20 UTC1h 50m
2026-07-26 EZS52RH - Jul 26, 11:45 UTCJul 26, 13:15 UTC1h 30m
2026-07-26 EZS23HQ CTA → BSL Jul 26, 08:05 UTCJul 26, 10:00 UTC1h 55m
2026-07-26 EZS85YX BSL → CTA Jul 26, 04:55 UTCJul 26, 06:35 UTC1h 41m
2026-07-25 EZS73NJ MLA → BSL Jul 25, 18:35 UTCJul 25, 20:50 UTC2h 15m
2026-07-25 EZS1281 BSL → MLA Jul 25, 15:40 UTCJul 25, 17:30 UTC1h 50m
2026-07-25 EZS68ME - Jul 25, 13:05 UTCJul 25, 14:50 UTC1h 45m
2026-07-25 EZS52RH - Jul 25, 10:25 UTCJul 25, 11:50 UTC1h 25m
2026-07-25 EZS1080 MAH → BSL Jul 25, 08:05 UTCJul 25, 09:25 UTC1h 20m
2026-07-25 EZS93EV BSL → MAH Jul 25, 04:55 UTCJul 25, 06:25 UTC1h 30m
2026-07-24 EZS19HP OLB → BSL Jul 24, 20:25 UTCJul 24, 21:35 UTC1h 10m
2026-07-24 EZS21NY ZRH → OLB Jul 24, 17:05 UTCJul 24, 18:25 UTC1h 20m
2026-07-24 EZS65PD OLB → ZRH Jul 24, 15:00 UTCJul 24, 16:10 UTC1h 10m
2026-07-24 EZS48DR - Jul 24, 12:20 UTCJul 24, 13:45 UTC1h 25m
2026-07-24 EZS52LF DJE → BSL Jul 24, 09:05 UTCJul 24, 11:15 UTC2h 10m
2026-07-24 EZS48HL DJE → GVA Jul 24, 05:25 UTCJul 24, 07:25 UTC2h 0m
2026-07-23 EZS65KL EDI → BSL Jul 23, 18:45 UTCJul 23, 20:20 UTC1h 35m
2026-07-23 EZS1231 BSL → EDI Jul 23, 15:50 UTCJul 23, 17:40 UTC1h 50m
2026-07-23 EZS68ME - Jul 23, 13:10 UTCJul 23, 14:50 UTC1h 40m
2026-07-23 EZS52RH - Jul 23, 10:35 UTCJul 23, 12:00 UTC1h 25m
2026-07-23 EZS45MR PRN → BSL Jul 23, 07:35 UTCJul 23, 09:40 UTC2h 5m
2026-07-23 EZS23QB BSL → PRN Jul 23, 04:35 UTCJul 23, 06:05 UTC1h 30m
2026-07-22 EZS54KG BUD → BSL Jul 22, 19:20 UTCJul 22, 20:45 UTC1h 25m
2026-07-22 EZS74UB BSL → BUD Jul 22, 17:00 UTCJul 22, 18:20 UTC1h 20m
2026-07-22 EZS64QE PMO → BSL Jul 22, 14:20 UTCJul 22, 16:10 UTC1h 50m
2026-07-22 EZS27BL BSL → PMO Jul 22, 11:45 UTCJul 22, 13:25 UTC1h 40m
2026-07-22 EZS9071 GVA → LPA Jul 22, 04:30 UTCJul 22, 04:55 UTC25m
2026-07-21 EZS9054 - Jul 21, 15:50 UTCJul 21, 17:20 UTC1h 30m
2026-07-21 EJU94EL HER → NAP Jul 21, 07:25 UTCJul 21, 08:55 UTC1h 30m
2026-07-21 EJU75BA NAP → HER Jul 21, 04:45 UTCJul 21, 06:05 UTC1h 20m
2026-07-20 EJU37AG - Jul 20, 20:20 UTCJul 20, 21:55 UTC1h 35m
2026-07-20 EJU4163 - Jul 20, 17:15 UTCJul 20, 18:50 UTC1h 35m
2026-07-20 EJU37PQ - Jul 20, 13:50 UTCJul 20, 15:20 UTC1h 30m
2026-07-20 EJU41LU - Jul 20, 11:05 UTCJul 20, 12:45 UTC1h 40m
2026-07-19 EJU34KB - Jul 19, 16:10 UTCJul 19, 17:05 UTC55m
2026-07-19 EJU16YE - Jul 19, 14:10 UTCJul 19, 15:10 UTC1h 0m
2026-07-19 EJU9045 - Jul 19, 10:10 UTCJul 19, 11:30 UTC1h 20m
2026-07-19 EZS9071 GVA → LPA Jul 19, 06:25 UTCJul 19, 07:00 UTC35m
2026-07-18 EZS61TZ LCA → BSL Jul 18, 21:05 UTCJul 19, 00:50 UTC3h 45m
2026-07-18 EZS82NW BSL → LCA Jul 18, 15:05 UTCJul 18, 18:20 UTC3h 15m
2026-07-18 EZS87KU - Jul 18, 11:20 UTCJul 18, 12:20 UTC1h 0m
2026-07-18 EZS61NC - Jul 18, 09:25 UTCJul 18, 10:15 UTC50m
2026-07-18 EZS158A NCE → BSL Jul 18, 07:35 UTCJul 18, 08:30 UTC55m
2026-07-18 EZS354V BSL → NCE Jul 18, 04:35 UTCJul 18, 05:30 UTC55m
2026-07-17 EZS39AR CPH → BSL Jul 17, 19:49 UTCJul 17, 21:15 UTC1h 25m
2026-07-17 EZS25UF - Jul 17, 16:49 UTCJul 17, 18:10 UTC1h 20m
2026-07-17 EZS95WH - Jul 17, 14:39 UTCJul 17, 15:49 UTC1h 10m
2026-07-17 EZS1065 - Jul 17, 11:50 UTCJul 17, 13:15 UTC1h 25m

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

Mode-S 4B1A28 frequently asked

What is Mode-S code 4B1A28?
4B1A28 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXO.
Where is Mode-S 4B1A28 registered?
Mode-S code 4B1A28 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A28 broadcasting right now?
Yes. Mode-S 4B1A28 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A28, octal 22615050, decimal 4,921,896.
What flights does 4B1A28 operate?
Mode-S 4B1A28 has broadcast 20 distinct callsigns, including EZS68ME, EZS52RH, EZS64QE, EZS27BL, EJU59FZ.