Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

400CEB

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-EUXI · AIRBUS A-321

Hex
400CEB
Octal
20006353
Decimal
4,197,611
Country
GB
Tail
G-EUXI
Type
A321
Broadcasting now · callsign EFW9UQ · 35,000 ft
Flights observed
392
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:05 UTC

Current position

400CEB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 400CEB falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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
EFW811N BA Euroflyer 13 2026-07-21
EFW74V BA Euroflyer 13 2026-07-21
EFW81W BA Euroflyer 12 2026-07-21
EFW568X BA Euroflyer 12 2026-07-21
EFW64C - 9 2026-07-17
EFW2BZ - 9 2026-07-17
EFW1FG BA Euroflyer 9 2026-07-24
EFW93XW BA Euroflyer 8 2026-06-17
EFW8RA BA Euroflyer 8 2026-06-07
EFW657G BA Euroflyer 8 2026-06-07
EFW48VJ BA Euroflyer 8 2026-06-17
EFW16PH BA Euroflyer 8 2026-07-24
EFW4LY - 7 2026-07-16
EFW8CQ - 6 2026-07-17
EFW5SL BA Euroflyer 6 2026-05-08
EFW461M BA Euroflyer 6 2026-05-08
EFW2FC - 6 2026-07-16
EFW26BF BA Euroflyer 6 2026-07-17
EFW93E - 5 2026-07-07
EFW75H - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EFW169K NCE → LGW Jul 26, 20:25 UTCJul 26, 22:00 UTC1h 35m
2026-07-26 EFW89WH LGW → NCE Jul 26, 17:10 UTCJul 26, 18:40 UTC1h 30m
2026-07-26 EFW59AU CHQ → LGW Jul 26, 12:05 UTCJul 26, 15:50 UTC3h 45m
2026-07-26 EFW85ZE LGW → CHQ Jul 26, 07:25 UTCJul 26, 10:35 UTC3h 10m
2026-07-25 EFW65TM CFU → LGW Jul 25, 21:00 UTCJul 25, 23:40 UTC2h 40m
2026-07-25 EFW93CA LGW → CFU Jul 25, 16:35 UTCJul 25, 18:55 UTC2h 20m
2026-07-25 EFW12LS MLA → LGW Jul 25, 12:15 UTCJul 25, 15:20 UTC3h 5m
2026-07-25 EFW9RZ LGW → MLA Jul 25, 08:05 UTCJul 25, 10:45 UTC2h 40m
2026-07-24 EFW29WB AGP → LGW Jul 24, 22:05 UTCJul 25, 00:15 UTC2h 10m
2026-07-24 EFW26CX LGW → AGP Jul 24, 17:55 UTCJul 24, 20:35 UTC2h 40m
2026-07-24 EFW1FG FAO → LGW Jul 24, 12:25 UTCJul 24, 14:45 UTC2h 20m
2026-07-24 EFW16PH LGW → FAO Jul 24, 08:15 UTCJul 24, 10:40 UTC2h 25m
2026-07-23 EFW19YZ BOD → LGW Jul 23, 20:05 UTCJul 23, 21:15 UTC1h 10m
2026-07-23 EFW45L LGW → BOD Jul 23, 17:50 UTCJul 23, 19:00 UTC1h 10m
2026-07-23 EFW50Z HER → LGW Jul 23, 12:35 UTCJul 23, 16:20 UTC3h 45m
2026-07-23 EFW741W - Jul 23, 07:40 UTCJul 23, 10:50 UTC3h 10m
2026-07-22 EFW96LG CAG → LGW Jul 22, 19:05 UTCJul 22, 21:30 UTC2h 25m
2026-07-22 EFW93PM LGW → CAG Jul 22, 15:55 UTCJul 22, 17:45 UTC1h 50m
2026-07-22 EFW86R - Jul 22, 11:10 UTCJul 22, 13:55 UTC2h 45m
2026-07-21 EFW811N OPO → LGW Jul 21, 20:10 UTCJul 21, 21:55 UTC1h 45m
2026-07-21 EFW568X LGW → OPO Jul 21, 17:15 UTCJul 21, 19:00 UTC1h 45m
2026-07-21 EFW74V KGS → LGW Jul 21, 11:50 UTCJul 21, 15:45 UTC3h 55m
2026-07-21 EFW81W LGW → KGS Jul 21, 06:35 UTCJul 21, 09:55 UTC3h 20m
2026-07-21 EFW74V KGS → LGW Jul 21, 00:55 UTCJul 21, 01:05 UTC10m
2026-07-20 EFW74V KGS → LGW Jul 20, 18:55 UTCJul 20, 22:45 UTC3h 50m
2026-07-20 EFW81W LGW → KGS Jul 20, 14:20 UTCJul 20, 17:40 UTC3h 20m
2026-07-20 EFW75J DBV → LGW Jul 20, 10:05 UTCJul 20, 12:50 UTC2h 45m
2026-07-20 EFW34BY LGW → DBV Jul 20, 06:45 UTCJul 20, 08:50 UTC2h 5m
2026-07-19 EFW42YR IBZ → LGW Jul 19, 21:45 UTCJul 19, 23:35 UTC1h 50m
2026-07-19 EFW15AV LGW → IBZ Jul 19, 17:55 UTCJul 19, 19:50 UTC1h 55m
2026-07-19 EFW1FG FAO → LGW Jul 19, 12:20 UTCJul 19, 14:30 UTC2h 10m
2026-07-19 EFW16PH LGW → FAO Jul 19, 08:40 UTCJul 19, 11:00 UTC2h 20m
2026-07-18 EFW811N OPO → LGW Jul 18, 19:20 UTCJul 18, 21:00 UTC1h 40m
2026-07-18 EFW568X LGW → OPO Jul 18, 16:20 UTCJul 18, 18:15 UTC1h 55m
2026-07-18 EFW23SM - Jul 18, 12:20 UTCJul 18, 14:20 UTC2h 0m
2026-07-18 EFW74JG LGW → PMI Jul 18, 08:35 UTCJul 18, 10:30 UTC1h 55m
2026-07-17 EFW8CQ - Jul 17, 18:50 UTCJul 17, 22:35 UTC3h 45m
2026-07-17 EFW26BF LGW → TFS Jul 17, 13:29 UTCJul 17, 17:15 UTC3h 45m
2026-07-17 EFW64C - Jul 17, 09:20 UTCJul 17, 11:30 UTC2h 10m
2026-07-17 EFW2BZ - Jul 17, 05:25 UTCJul 17, 07:55 UTC2h 30m
2026-07-16 EFW2FC - Jul 16, 21:40 UTCJul 17, 00:25 UTC2h 45m
2026-07-16 EFW4LY - Jul 16, 17:00 UTCJul 16, 20:15 UTC3h 15m
2026-07-16 EFW67P - Jul 16, 11:40 UTCJul 16, 14:25 UTC2h 45m
2026-07-16 EFW4GB - Jul 16, 06:25 UTCJul 16, 08:55 UTC2h 30m
2026-07-15 EFW96LG - Jul 15, 19:30 UTCJul 15, 21:50 UTC2h 20m
2026-07-15 EFW93PM - Jul 15, 16:05 UTCJul 15, 18:05 UTC2h 0m
2026-07-15 EFW64C - Jul 15, 10:25 UTCJul 15, 12:35 UTC2h 10m
2026-07-15 EFW2BZ - Jul 15, 06:20 UTCJul 15, 08:50 UTC2h 30m
2026-07-14 EFW50Z - Jul 14, 12:45 UTCJul 14, 16:30 UTC3h 45m
2026-07-14 EFW741W - Jul 14, 07:10 UTCJul 14, 10:15 UTC3h 5m

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 G-EUXI page for operator, model, and routing details .

Mode-S 400CEB frequently asked

What is Mode-S code 400CEB?
400CEB is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-EUXI.
Where is Mode-S 400CEB registered?
Mode-S code 400CEB is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 400CEB broadcasting right now?
Yes. Mode-S 400CEB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400CEB, octal 20006353, decimal 4,197,611.
What flights does 400CEB operate?
Mode-S 400CEB has broadcast 20 distinct callsigns, including EFW811N, EFW74V, EFW81W, EFW568X, EFW64C.