Apparatus

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sensors Mode-S transponder

4B1A25

ICAO 24-bit transponder address · allocated to Switzerland

Currently assigned to HB-JXL · AIRBUS A-320

Hex
4B1A25
Octal
22615045
Decimal
4,921,893
Country
CH
Tail
HB-JXL
Type
A320
Broadcasting now · callsign EZS1287 · 39,000 ft
Flights observed
639
Distinct callsigns
20
Country
CH
Last broadcast
Jul 26, 20:55 UTC

Current position

4B1A25 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B1A25 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
EZS58KB - 8 2026-06-21
EZS78KD - 7 2026-07-23
EZS75JQ - 7 2026-07-23
EZS53VN Easyjet Switzerland 7 2026-06-24
EZS51BG - 7 2026-06-24
EZS84LU Easyjet Switzerland 6 2026-07-20
EZS79EL Easyjet Switzerland 6 2026-06-21
EZS75XR Easyjet Switzerland 6 2026-06-21
EZS46NT Easyjet Switzerland 6 2026-07-20
EJU85HR - 6 2026-07-08
EJU85DP - 6 2026-07-08
EZS83TQ - 5 2026-07-24
EZS67AR - 5 2026-06-16
EZS58ZV - 5 2026-07-24
EJU85QE - 5 2026-07-23
EJU79CA - 5 2026-07-23
EZS91JX - 4 2026-07-14
EZS89GX - 4 2026-07-14
EZS87PJ Easyjet Switzerland 4 2026-04-19
EZS81ZH Easyjet Switzerland 4 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EZS64DZ KRK → BSL Jul 26, 19:25 UTCJul 26, 20:50 UTC1h 25m
2026-07-26 EZS52NT BSL → KRK Jul 26, 17:15 UTCJul 26, 18:35 UTC1h 20m
2026-07-26 EZS58YX - Jul 26, 15:00 UTCJul 26, 16:15 UTC1h 15m
2026-07-26 EZS31JB BSL → FCO Jul 26, 12:45 UTCJul 26, 13:50 UTC1h 5m
2026-07-26 EZS47BN LGW → BSL Jul 26, 10:40 UTCJul 26, 11:40 UTC1h 0m
2026-07-26 EZS8478 BSL → LGW Jul 26, 08:15 UTCJul 26, 09:30 UTC1h 15m
2026-07-26 EZS124Y AJA → BSL Jul 26, 06:15 UTCJul 26, 07:15 UTC1h 1m
2026-07-26 EZS548Q BSL → AJA Jul 26, 04:15 UTCJul 26, 05:25 UTC1h 10m
2026-07-25 EZS61TZ LCA → BSL Jul 25, 17:50 UTCJul 25, 21:30 UTC3h 40m
2026-07-25 EZS82NW BSL → LCA Jul 25, 13:05 UTCJul 25, 16:25 UTC3h 20m
2026-07-25 EZS87KU BSL → ACE Jul 25, 11:05 UTCJul 25, 12:15 UTC1h 10m
2026-07-25 EZS61NC BSL → ZAD Jul 25, 09:00 UTCJul 25, 09:55 UTC55m
2026-07-25 EZS158A NCE → BSL Jul 25, 07:15 UTCJul 25, 08:10 UTC55m
2026-07-25 EZS71RV GVA → NCE Jul 25, 04:45 UTCJul 25, 05:25 UTC40m
2026-07-24 EZS59MQ LGW → GVA Jul 24, 20:15 UTCJul 24, 21:25 UTC1h 10m
2026-07-24 EZS23YH - Jul 24, 17:55 UTCJul 24, 19:00 UTC1h 5m
2026-07-24 EZS81ZH TLS → GVA Jul 24, 15:55 UTCJul 24, 16:45 UTC50m
2026-07-24 EZS69UH GVA → TLS Jul 24, 14:10 UTCJul 24, 15:00 UTC50m
2026-07-24 EZS83TQ - Jul 24, 11:50 UTCJul 24, 13:00 UTC1h 10m
2026-07-24 EZS58ZV - Jul 24, 09:30 UTCJul 24, 10:35 UTC1h 5m
2026-07-24 EZS62GR OLB → GVA Jul 24, 06:55 UTCJul 24, 08:05 UTC1h 10m
2026-07-24 EZS91YN - Jul 24, 04:40 UTCJul 24, 05:35 UTC55m
2026-07-23 EZS75JQ - Jul 23, 20:00 UTCJul 23, 21:55 UTC1h 55m
2026-07-23 EZS78KD - Jul 23, 17:05 UTCJul 23, 18:35 UTC1h 30m
2026-07-23 EJU79CA IBZ → GVA Jul 23, 14:30 UTCJul 23, 16:05 UTC1h 35m
2026-07-23 EJU85QE GVA → IBZ Jul 23, 12:05 UTCJul 23, 13:30 UTC1h 25m
2026-07-23 EZS9496 - Jul 23, 09:00 UTCJul 23, 11:00 UTC2h 0m
2026-07-22 EZS19WQ - Jul 22, 18:30 UTCJul 22, 20:00 UTC1h 30m
2026-07-20 EZS79FT CHQ → GVA Jul 20, 16:45 UTCJul 20, 19:30 UTC2h 45m
2026-07-20 EZS49PB GVA → CHQ Jul 20, 13:15 UTCJul 20, 15:30 UTC2h 15m
2026-07-20 EZS75NE RNS → GVA Jul 20, 10:15 UTCJul 20, 11:25 UTC1h 10m
2026-07-20 EZS83YJ GVA → RNS Jul 20, 08:10 UTCJul 20, 09:20 UTC1h 10m
2026-07-20 EZS84LU BOD → GVA Jul 20, 06:15 UTCJul 20, 07:10 UTC55m
2026-07-20 EZS46NT GVA → BOD Jul 20, 04:25 UTCJul 20, 05:25 UTC1h 0m
2026-07-19 EZS43JB RHO → GVA Jul 19, 16:55 UTCJul 19, 20:00 UTC3h 5m
2026-07-19 EZS62AV - Jul 19, 12:45 UTCJul 19, 15:30 UTC2h 45m
2026-07-19 EZS83TQ - Jul 19, 10:25 UTCJul 19, 11:35 UTC1h 10m
2026-07-19 EZS58ZV - Jul 19, 07:50 UTCJul 19, 08:55 UTC1h 5m
2026-07-19 EZS59XA NCE → GVA Jul 19, 06:05 UTCJul 19, 06:45 UTC40m
2026-07-19 EZS71RV GVA → NCE Jul 19, 04:15 UTCJul 19, 04:55 UTC40m
2026-07-18 EZS52CP - Jul 18, 18:50 UTCJul 18, 21:30 UTC2h 40m
2026-07-18 EZS86XB GVA → HER Jul 18, 14:40 UTCJul 18, 17:00 UTC2h 20m
2026-07-18 EZS27QG - Jul 18, 12:20 UTCJul 18, 13:15 UTC55m
2026-07-18 EZS29UW - Jul 18, 10:20 UTCJul 18, 11:15 UTC55m
2026-07-18 EZS81DV NBE → GVA Jul 18, 07:20 UTCJul 18, 09:10 UTC1h 50m
2026-07-18 EZS12DC - Jul 18, 04:20 UTCJul 18, 05:40 UTC1h 20m
2026-07-17 EZS59MQ - Jul 17, 20:50 UTCJul 17, 22:00 UTC1h 10m
2026-07-17 EZS23YH - Jul 17, 18:29 UTCJul 17, 19:40 UTC1h 10m
2026-07-17 EZS81ZH TLS → GVA Jul 17, 16:34 UTCJul 17, 17:25 UTC50m
2026-07-17 EZS69UH - Jul 17, 14:44 UTCJul 17, 15:40 UTC55m

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

Mode-S 4B1A25 frequently asked

What is Mode-S code 4B1A25?
4B1A25 is an ICAO 24-bit transponder address. Allocated to Switzerland. Assigned to HB-JXL.
Where is Mode-S 4B1A25 registered?
Mode-S code 4B1A25 is allocated to Switzerland (CH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B1A25 broadcasting right now?
Yes. Mode-S 4B1A25 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B1A25, octal 22615045, decimal 4,921,893.
What flights does 4B1A25 operate?
Mode-S 4B1A25 has broadcast 20 distinct callsigns, including EZS58KB, EZS78KD, EZS75JQ, EZS53VN, EZS51BG.