sensors Mode-S transponder
4CACF1
ICAO 24-bit transponder address · allocated to Ireland
Currently assigned to EI-MAZ · AIRBUS A-330-300
- Hex
- 4CACF1
- Octal
- 23126361
- Decimal
- 5,025,009
- Country
- IE
- Tail
- EI-MAZ
- Type
- A333
- Flights observed
- 229
- Distinct callsigns
- 20
- Country
- IE
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address 4CACF1 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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 |
|---|---|---|---|
| GTR1986 | - | 48 | 2026-07-12 |
| GTR1975 | - | 28 | 2026-07-12 |
| GTR1912 | - | 18 | 2026-07-13 |
| GTR1513 | - | 16 | 2026-07-14 |
| GTR1515 | - | 9 | 2026-05-04 |
| GTR1604 | - | 8 | 2026-05-04 |
| GTR1556 | - | 8 | 2026-07-14 |
| GTR1967 | - | 6 | 2026-07-07 |
| GTR1946 | - | 6 | 2026-04-23 |
| GTR1945 | - | 6 | 2026-04-22 |
| GTR1914 | - | 6 | 2026-04-25 |
| GTR1548 | - | 6 | 2026-06-26 |
| GTR1956 | - | 5 | 2026-06-19 |
| GTR1926 | - | 5 | 2026-04-28 |
| GTR1568 | Gestar | 5 | 2026-06-20 |
| GTR1538 | - | 5 | 2026-04-29 |
| GTR1934 | - | 4 | 2026-04-15 |
| GTR1924 | - | 4 | 2026-05-12 |
| GTR1559 | - | 4 | 2026-04-24 |
| GTR1962 | - | 3 | 2026-07-04 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | GTR1556 | - | Jul 14, 14:15 UTC | Jul 14, 16:15 UTC | 2h 0m |
| 2026-07-14 | GTR1513 | - | Jul 14, 06:30 UTC | Jul 14, 11:45 UTC | 5h 15m |
| 2026-07-13 | GTR1513 | - | Jul 13, 21:40 UTC | Jul 14, 03:25 UTC | 5h 45m |
| 2026-07-13 | GTR1912 | - | Jul 13, 14:15 UTC | Jul 13, 19:45 UTC | 5h 30m |
| 2026-07-13 | GTR1912 | - | Jul 13, 07:05 UTC | Jul 13, 11:55 UTC | 4h 50m |
| 2026-07-12 | GTR1986 | - | Jul 12, 22:10 UTC | Jul 13, 03:45 UTC | 5h 35m |
| 2026-07-12 | GTR1986 | - | Jul 12, 06:20 UTC | Jul 13, 03:45 UTC | 21h 25m |
| 2026-07-12 | GTR1986 | - | Jul 12, 05:01 UTC | Jul 13, 03:45 UTC | 22h 45m |
| 2026-07-12 | GTR1975 | - | Jul 12, 02:45 UTC | Jul 13, 02:15 UTC | 23h 30m |
| 2026-07-12 | GTR1975 | - | Jul 12, 01:15 UTC | Jul 12, 22:15 UTC | 21h 0m |
| 2026-07-11 | GTR1975 | ZAZ → DWC | Jul 11, 15:10 UTC | Jul 11, 22:35 UTC | 7h 25m |
| 2026-07-09 | GTR1986 | - | Jul 9, 23:25 UTC | Jul 10, 05:00 UTC | 5h 35m |
| 2026-07-09 | GTR1986 | - | Jul 9, 06:20 UTC | Jul 10, 05:00 UTC | 22h 40m |
| 2026-07-09 | GTR1986 | - | Jul 9, 04:20 UTC | Jul 10, 04:15 UTC | 23h 55m |
| 2026-07-09 | GTR1975 | - | Jul 9, 02:20 UTC | Jul 10, 02:15 UTC | 23h 55m |
| 2026-07-09 | GTR1975 | - | Jul 9, 02:00 UTC | Jul 10, 00:15 UTC | 22h 15m |
| 2026-07-08 | GTR1975 | - | Jul 8, 15:05 UTC | Jul 8, 22:25 UTC | 7h 20m |
| 2026-07-07 | GTR1967 | TLV → ZAZ | Jul 7, 20:45 UTC | Jul 8, 12:40 UTC | 15h 55m |
| 2026-07-07 | GTR1556 | ZAZ → TLV | Jul 7, 14:10 UTC | Jul 7, 18:10 UTC | 4h 0m |
| 2026-07-07 | GTR1513 | TBS → ZAZ | Jul 7, 06:10 UTC | Jul 7, 11:10 UTC | 5h 0m |
| 2026-07-06 | GTR1513 | - | Jul 6, 20:55 UTC | Jul 7, 02:50 UTC | 5h 55m |
| 2026-07-06 | GTR1912 | - | Jul 6, 12:50 UTC | Jul 6, 18:20 UTC | 5h 30m |
| 2026-07-06 | GTR1912 | ZAZ → TBS | Jul 6, 06:00 UTC | Jul 6, 10:30 UTC | 4h 30m |
| 2026-07-05 | GTR1560 | TBS → ZAZ | Jul 5, 21:10 UTC | Jul 6, 02:30 UTC | 5h 20m |
| 2026-07-05 | GTR1560 | - | Jul 5, 12:10 UTC | Jul 5, 18:20 UTC | 6h 10m |
| 2026-07-04 | GTR1577 | - | Jul 4, 20:55 UTC | Jul 5, 09:40 UTC | 12h 45m |
| 2026-07-04 | GTR1962 | DAC → DAC | Jul 4, 06:10 UTC | Jul 4, 18:30 UTC | 12h 20m |
| 2026-07-03 | GTR1950 | ZAZ → DAC | Jul 3, 12:40 UTC | Jul 4, 03:40 UTC | 15h 0m |
| 2026-06-30 | GTR1967 | - | Jun 30, 21:25 UTC | Jul 1, 12:50 UTC | 15h 25m |
| 2026-06-30 | GTR1556 | - | Jun 30, 14:45 UTC | Jun 30, 18:50 UTC | 4h 5m |
| 2026-06-30 | GTR1513 | TBS → ZAZ | Jun 30, 07:20 UTC | Jun 30, 12:15 UTC | 4h 55m |
| 2026-06-29 | GTR1513 | - | Jun 29, 21:39 UTC | Jun 30, 03:50 UTC | 6h 11m |
| 2026-06-29 | GTR1912 | - | Jun 29, 13:44 UTC | Jun 29, 19:20 UTC | 5h 35m |
| 2026-06-29 | GTR1912 | - | Jun 29, 06:40 UTC | Jun 29, 11:20 UTC | 4h 40m |
| 2026-06-28 | GTR1986 | - | Jun 28, 22:59 UTC | Jun 29, 04:14 UTC | 5h 15m |
| 2026-06-28 | GTR1986 | - | Jun 28, 06:20 UTC | Jun 29, 04:14 UTC | 21h 55m |
| 2026-06-28 | GTR1986 | - | Jun 28, 04:20 UTC | Jun 29, 04:14 UTC | 23h 55m |
| 2026-06-28 | GTR1975 | - | Jun 28, 02:20 UTC | Jun 29, 02:14 UTC | 23h 55m |
| 2026-06-28 | GTR1975 | - | Jun 28, 02:14 UTC | Jun 29, 00:14 UTC | 22h 0m |
| 2026-06-27 | GTR1975 | ZAZ → DWC | Jun 27, 16:55 UTC | Jun 28, 00:00 UTC | 7h 5m |
| 2026-06-26 | GTR1548 | - | Jun 26, 09:59 UTC | Jun 26, 14:50 UTC | 4h 50m |
| 2026-06-26 | GTR1548 | DAC → TBS | Jun 26, 00:30 UTC | Jun 26, 07:00 UTC | 6h 30m |
| 2026-06-25 | GTR1547 | - | Jun 25, 08:04 UTC | Jun 25, 21:59 UTC | 13h 55m |
| 2026-06-25 | GTR1937 | - | Jun 25, 01:14 UTC | Jun 25, 05:55 UTC | 4h 40m |
| 2026-06-24 | GTR1935 | ZAZ → DWC | Jun 24, 15:39 UTC | Jun 24, 22:55 UTC | 7h 15m |
| 2026-06-23 | GTR1967 | TLV → ZAZ | Jun 23, 21:05 UTC | Jun 24, 12:34 UTC | 15h 30m |
| 2026-06-23 | GTR1556 | - | Jun 23, 14:39 UTC | Jun 23, 18:45 UTC | 4h 5m |
| 2026-06-23 | GTR1513 | TBS → ZAZ | Jun 23, 07:25 UTC | Jun 23, 12:15 UTC | 4h 50m |
| 2026-06-22 | GTR1513 | - | Jun 22, 21:40 UTC | Jun 23, 03:54 UTC | 6h 15m |
| 2026-06-22 | GTR1912 | - | Jun 22, 13:54 UTC | Jun 22, 19:34 UTC | 5h 40m |
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 EI-MAZ page for operator, model, and routing details .