sensors Mode-S transponder
45E054
ICAO 24-bit transponder address · allocated to Denmark
- Hex
- 45E054
- Octal
- 21360124
- Decimal
- 4,579,412
- Country
- DK
- Flights observed
- 27
- Distinct callsigns
- 5
- Country
- DK
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 45E054 falls within the block assigned to Denmark (DK) by ICAO Annex 10, Volume III. Every aircraft registered in Denmark 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 5 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| MAI212 | - | 8 | 2026-07-06 |
| MAI213 | - | 7 | 2026-07-04 |
| MAI104 | - | 5 | 2026-07-17 |
| MAI220 | Mauritania Airlines International | 1 | 2026-06-22 |
| MAI105 | Mauritania Airlines International | 1 | 2026-04-17 |
Recent flights last 27
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | MAI104 | - | Jul 17, 17:30 UTC | Jul 17, 20:29 UTC | 3h 0m |
| 2026-07-16 | MAI104 | - | Jul 16, 10:45 UTC | Jul 16, 10:55 UTC | 10m |
| 2026-07-16 | - | - | Jul 16, 08:55 UTC | Jul 16, 09:10 UTC | 15m |
| 2026-07-06 | MAI212 | - | Jul 6, 11:20 UTC | Jul 6, 11:35 UTC | 15m |
| 2026-07-04 | MAI213 | - | Jul 4, 17:10 UTC | Jul 4, 17:40 UTC | 30m |
| 2026-07-01 | - | - | Jul 1, 22:00 UTC | Jul 1, 22:10 UTC | 10m |
| 2026-06-29 | MAI212 | - | Jun 29, 11:45 UTC | Jun 29, 12:05 UTC | 20m |
| 2026-06-29 | MAI212 | - | Jun 29, 09:29 UTC | Jun 29, 09:44 UTC | 15m |
| 2026-06-27 | MAI212 | - | Jun 27, 11:30 UTC | Jun 27, 16:49 UTC | 5h 20m |
| 2026-06-24 | MAI104 | NKC → DSS | Jun 24, 15:49 UTC | Jun 24, 15:59 UTC | 10m |
| 2026-06-22 | MAI220 | NDB → LPA | Jun 22, 09:14 UTC | Jun 22, 09:34 UTC | 20m |
| 2026-06-17 | - | - | Jun 17, 21:35 UTC | Jun 17, 21:45 UTC | 10m |
| 2026-06-17 | MAI104 | NKC → DSS | Jun 17, 17:10 UTC | Jun 17, 17:20 UTC | 10m |
| 2026-06-15 | MAI213 | DSS → NKC | Jun 15, 16:49 UTC | Jun 15, 16:59 UTC | 10m |
| 2026-06-15 | MAI212 | - | Jun 15, 11:05 UTC | Jun 15, 11:19 UTC | 15m |
| 2026-06-15 | MAI212 | - | Jun 15, 09:49 UTC | Jun 15, 10:00 UTC | 10m |
| 2026-05-25 | MAI213 | DSS → NKC | May 25, 16:30 UTC | May 25, 16:45 UTC | 15m |
| 2026-05-25 | - | - | May 25, 09:35 UTC | May 25, 09:50 UTC | 15m |
| 2026-05-20 | MAI104 | NKC → DSS | May 20, 15:55 UTC | May 20, 16:05 UTC | 10m |
| 2026-04-29 | - | - | Apr 29, 18:40 UTC | Apr 29, 19:00 UTC | 20m |
| 2026-04-27 | MAI213 | DSS → NKC | Apr 27, 18:35 UTC | Apr 27, 18:45 UTC | 10m |
| 2026-04-27 | MAI213 | DSS → NKC | Apr 27, 17:10 UTC | Apr 27, 17:30 UTC | 20m |
| 2026-04-27 | MAI212 | NKC → DSS | Apr 27, 11:35 UTC | Apr 27, 11:45 UTC | 10m |
| 2026-04-25 | MAI213 | DSS → NKC | Apr 25, 11:25 UTC | Apr 25, 17:20 UTC | 5h 55m |
| 2026-04-25 | MAI212 | NKC → DSS | Apr 25, 09:35 UTC | Apr 25, 09:45 UTC | 10m |
| 2026-04-20 | MAI213 | DSS → NKC | Apr 20, 18:25 UTC | Apr 20, 19:00 UTC | 35m |
| 2026-04-17 | MAI105 | CKY → DSS | Apr 17, 20:20 UTC | Apr 17, 20:35 UTC | 15m |
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.