sensors Mode-S transponder
0C21FB
ICAO 24-bit transponder address · allocated to Suriname
- Hex
- 0C21FB
- Octal
- 03020773
- Decimal
- 795,131
- Country
- SR
- Flights observed
- 137
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21FB falls within the block assigned to Suriname (SR) by ICAO Annex 10, Volume III. Every aircraft registered in Suriname 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 |
|---|---|---|---|
| CMP9819 | Copa Airlines | 8 | 2026-06-28 |
| CMP821 | - | 8 | 2026-07-13 |
| CMP820 | - | 5 | 2026-07-14 |
| CMP734 | - | 5 | 2026-07-13 |
| BOE123 | - | 5 | 2026-04-15 |
| CMP9026 | - | 4 | 2026-06-29 |
| CMP880 | Copa Airlines | 4 | 2026-05-29 |
| CMP765 | - | 4 | 2026-07-12 |
| CMP753 | - | 4 | 2026-07-10 |
| CMP479 | - | 4 | 2026-07-07 |
| CMP476 | - | 4 | 2026-07-08 |
| CMP404 | Copa Airlines | 4 | 2026-06-09 |
| CMP357 | Copa Airlines | 4 | 2026-05-30 |
| CMP119 | - | 4 | 2026-06-22 |
| CMP477 | - | 3 | 2026-07-09 |
| CMP470 | - | 3 | 2026-06-18 |
| CMP424 | - | 3 | 2026-07-10 |
| CMP228 | Copa Airlines | 3 | 2026-06-06 |
| CMP205 | - | 3 | 2026-07-11 |
| BOE919 | - | 3 | 2026-04-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CMP709 | - | Jul 17, 20:55 UTC | Jul 18, 00:19 UTC | 3h 25m |
| 2026-07-17 | CMP708 | - | Jul 17, 09:15 UTC | Jul 17, 18:44 UTC | 9h 30m |
| 2026-07-17 | CMP337 | - | Jul 17, 06:00 UTC | Jul 17, 06:40 UTC | 40m |
| 2026-07-16 | CMP143 | - | Jul 16, 22:05 UTC | Jul 16, 22:15 UTC | 10m |
| 2026-07-15 | CMP642 | - | Jul 15, 21:15 UTC | Jul 16, 14:55 UTC | 17h 40m |
| 2026-07-15 | CMP862 | SJO → MCO | Jul 15, 00:00 UTC | Jul 15, 17:50 UTC | 17h 50m |
| 2026-07-14 | CMP820 | - | Jul 14, 05:50 UTC | Jul 14, 22:55 UTC | 17h 4m |
| 2026-07-14 | CMP820 | - | Jul 14, 02:50 UTC | Jul 14, 22:55 UTC | 20h 4m |
| 2026-07-14 | CMP820 | - | Jul 14, 01:05 UTC | Jul 14, 22:55 UTC | 21h 49m |
| 2026-07-13 | CMP820 | - | Jul 13, 22:50 UTC | Jul 14, 22:45 UTC | 23h 54m |
| 2026-07-13 | CMP821 | - | Jul 13, 21:30 UTC | Jul 14, 18:15 UTC | 20h 45m |
| 2026-07-13 | CMP821 | - | Jul 13, 16:40 UTC | Jul 14, 11:00 UTC | 18h 20m |
| 2026-07-13 | CMP821 | - | Jul 13, 14:20 UTC | Jul 14, 11:00 UTC | 20h 40m |
| 2026-07-13 | CMP821 | - | Jul 13, 08:55 UTC | Jul 14, 06:55 UTC | 22h 0m |
| 2026-07-13 | CMP821 | - | Jul 13, 06:50 UTC | Jul 14, 06:45 UTC | 23h 55m |
| 2026-07-13 | CMP821 | - | Jul 13, 06:05 UTC | Jul 14, 03:05 UTC | 21h 0m |
| 2026-07-13 | CMP734 | - | Jul 13, 00:50 UTC | Jul 13, 23:30 UTC | 22h 40m |
| 2026-07-12 | CMP734 | - | Jul 12, 22:50 UTC | Jul 13, 22:05 UTC | 23h 15m |
| 2026-07-12 | CMP734 | - | Jul 12, 21:25 UTC | Jul 13, 16:45 UTC | 19h 20m |
| 2026-07-12 | CMP734 | - | Jul 12, 17:55 UTC | Jul 13, 16:45 UTC | 22h 50m |
| 2026-07-12 | CMP734 | - | Jul 12, 13:40 UTC | Jul 13, 10:30 UTC | 20h 50m |
| 2026-07-12 | CMP765 | - | Jul 12, 09:55 UTC | Jul 13, 08:45 UTC | 22h 50m |
| 2026-07-12 | CMP765 | - | Jul 12, 06:50 UTC | Jul 13, 06:45 UTC | 23h 55m |
| 2026-07-12 | CMP204 | - | Jul 12, 06:01 UTC | Jul 13, 01:05 UTC | 19h 5m |
| 2026-07-12 | CMP204 | - | Jul 12, 01:35 UTC | Jul 13, 00:45 UTC | 23h 10m |
| 2026-07-11 | CMP205 | - | Jul 11, 22:50 UTC | Jul 12, 22:00 UTC | 23h 10m |
| 2026-07-11 | CMP205 | - | Jul 11, 22:40 UTC | Jul 12, 18:15 UTC | 19h 35m |
| 2026-07-11 | CMP205 | - | Jul 11, 17:40 UTC | Jul 12, 14:01 UTC | 20h 20m |
| 2026-07-10 | CMP753 | - | Jul 10, 22:20 UTC | Jul 11, 15:55 UTC | 17h 35m |
| 2026-07-10 | CMP753 | - | Jul 10, 17:35 UTC | Jul 11, 15:55 UTC | 22h 20m |
| 2026-07-10 | CMP753 | - | Jul 10, 15:10 UTC | Jul 11, 11:10 UTC | 20h 0m |
| 2026-07-10 | CMP753 | - | Jul 10, 08:50 UTC | Jul 11, 07:00 UTC | 22h 10m |
| 2026-07-10 | CMP424 | - | Jul 10, 06:50 UTC | Jul 11, 06:45 UTC | 23h 56m |
| 2026-07-10 | CMP424 | - | Jul 10, 06:10 UTC | Jul 11, 02:55 UTC | 20h 45m |
| 2026-07-10 | CMP424 | - | Jul 10, 04:15 UTC | Jul 11, 02:45 UTC | 22h 30m |
| 2026-07-09 | CMP423 | - | Jul 9, 16:35 UTC | Jul 10, 02:50 UTC | 10h 15m |
| 2026-07-09 | CMP869 | PTY → SDQ | Jul 9, 14:20 UTC | Jul 9, 14:30 UTC | 10m |
| 2026-07-09 | CMP477 | - | Jul 9, 05:05 UTC | Jul 9, 09:35 UTC | 4h 30m |
| 2026-07-08 | CMP476 | - | Jul 8, 12:40 UTC | Jul 9, 00:05 UTC | 11h 25m |
| 2026-07-07 | CMP479 | - | Jul 7, 18:55 UTC | Jul 8, 02:15 UTC | 7h 20m |
| 2026-07-07 | CMP820 | - | Jul 7, 05:20 UTC | Jul 7, 16:20 UTC | 11h 0m |
| 2026-07-06 | CMP821 | - | Jul 6, 07:25 UTC | Jul 7, 02:15 UTC | 18h 50m |
| 2026-07-06 | CMP821 | - | Jul 6, 05:30 UTC | Jul 7, 02:15 UTC | 20h 45m |
| 2026-07-04 | CMP445 | - | Jul 4, 23:05 UTC | Jul 5, 01:05 UTC | 2h 0m |
| 2026-07-04 | CMP478 | - | Jul 4, 09:50 UTC | Jul 4, 20:30 UTC | 10h 40m |
| 2026-07-03 | CMP291 | - | Jul 3, 13:15 UTC | Jul 4, 08:30 UTC | 19h 15m |
| 2026-07-02 | CMP246 | - | Jul 2, 10:45 UTC | Jul 3, 02:35 UTC | 15h 50m |
| 2026-07-01 | CMP240 | - | Jul 1, 10:30 UTC | Jul 1, 23:40 UTC | 13h 10m |
| 2026-06-30 | CMP479 | MCO → GUA | Jun 30, 21:10 UTC | Jul 1, 03:40 UTC | 6h 30m |
| 2026-06-29 | CMP446 | PTY → MCO | Jun 29, 23:05 UTC | Jun 30, 16:25 UTC | 17h 21m |
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.