sensors Mode-S transponder
0C21FA
ICAO 24-bit transponder address · allocated to Suriname
- Hex
- 0C21FA
- Octal
- 03020772
- Decimal
- 795,130
- Country
- SR
- Flights observed
- 131
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21FA 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 |
|---|---|---|---|
| CMP476 | - | 6 | 2026-07-17 |
| CMP477 | - | 5 | 2026-06-30 |
| CMP9818 | Copa Airlines | 4 | 2026-04-16 |
| CMP733 | Copa Airlines | 4 | 2026-05-15 |
| CMP867 | Copa Airlines | 3 | 2026-07-04 |
| CMP817 | Copa Airlines | 3 | 2026-06-27 |
| CMP712 | Copa Airlines | 3 | 2026-06-02 |
| CMP626 | - | 3 | 2026-06-21 |
| CMP463 | Copa Airlines | 3 | 2026-06-02 |
| CMP456 | - | 3 | 2026-07-14 |
| CMP451 | - | 3 | 2026-06-12 |
| CMP450 | Copa Airlines | 3 | 2026-06-12 |
| CMP404 | - | 3 | 2026-06-26 |
| CMP253 | - | 3 | 2026-07-15 |
| CMP141 | Copa Airlines | 3 | 2026-05-07 |
| CMP117 | - | 3 | 2026-06-21 |
| CMP897 | Copa Airlines | 2 | 2026-05-03 |
| CMP891 | - | 2 | 2026-07-08 |
| CMP855 | - | 2 | 2026-07-11 |
| CMP832 | Copa Airlines | 2 | 2026-04-30 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CMP476 | SJO → DEN | Jul 17, 14:39 UTC | Jul 17, 23:45 UTC | 9h 5m |
| 2026-07-17 | CMP851 | - | Jul 17, 08:00 UTC | Jul 17, 13:20 UTC | 5h 20m |
| 2026-07-16 | CMP236 | - | Jul 16, 14:25 UTC | Jul 17, 05:20 UTC | 14h 55m |
| 2026-07-15 | CMP844 | ATL → ORD | Jul 15, 21:35 UTC | Jul 16, 12:20 UTC | 14h 45m |
| 2026-07-15 | CMP253 | LAS → ATL | Jul 15, 07:50 UTC | Jul 15, 19:30 UTC | 11h 40m |
| 2026-07-14 | CMP456 | - | Jul 14, 20:25 UTC | Jul 15, 05:20 UTC | 8h 54m |
| 2026-07-14 | CMP101 | - | Jul 14, 10:35 UTC | Jul 14, 18:40 UTC | 8h 5m |
| 2026-07-13 | CMP716 | AUS → IAD | Jul 13, 20:55 UTC | Jul 14, 08:00 UTC | 11h 5m |
| 2026-07-13 | CMP715 | PTY → AUS | Jul 13, 15:10 UTC | Jul 13, 18:50 UTC | 3h 40m |
| 2026-07-11 | CMP855 | - | Jul 11, 17:30 UTC | Jul 12, 10:30 UTC | 17h 0m |
| 2026-07-11 | CMP855 | - | Jul 11, 13:15 UTC | Jul 12, 10:30 UTC | 21h 15m |
| 2026-07-11 | CMP769 | - | Jul 11, 04:15 UTC | Jul 11, 17:40 UTC | 13h 25m |
| 2026-07-08 | CMP891 | - | Jul 8, 21:05 UTC | Jul 9, 00:00 UTC | 2h 55m |
| 2026-07-08 | CMP880 | - | Jul 8, 16:05 UTC | Jul 8, 19:10 UTC | 3h 5m |
| 2026-07-07 | CMP349 | AUA → PTY | Jul 7, 17:30 UTC | Jul 8, 16:25 UTC | 22h 55m |
| 2026-07-07 | CMP348 | PTY → AUA | Jul 7, 15:55 UTC | Jul 7, 16:05 UTC | 10m |
| 2026-07-06 | CMP709 | - | Jul 6, 23:45 UTC | Jul 7, 03:20 UTC | 3h 35m |
| 2026-07-06 | CMP708 | - | Jul 6, 15:30 UTC | Jul 6, 19:10 UTC | 3h 40m |
| 2026-07-05 | CMP840 | - | Jul 5, 09:25 UTC | Jul 5, 10:10 UTC | 45m |
| 2026-07-04 | CMP868 | - | Jul 4, 20:00 UTC | Jul 5, 04:10 UTC | 8h 10m |
| 2026-07-04 | CMP867 | PTY → MCO | Jul 4, 14:55 UTC | Jul 4, 17:20 UTC | 2h 25m |
| 2026-07-03 | CMP389 | GUA → PTY | Jul 3, 13:30 UTC | Jul 3, 14:35 UTC | 1h 5m |
| 2026-07-02 | CMP496 | GUA → GUA | Jul 2, 22:35 UTC | Jul 3, 04:25 UTC | 5h 50m |
| 2026-07-02 | CMP380 | - | Jul 2, 14:05 UTC | Jul 2, 15:10 UTC | 1h 5m |
| 2026-07-01 | CMP268 | - | Jul 1, 02:20 UTC | Jul 1, 02:30 UTC | 10m |
| 2026-06-30 | CMP477 | - | Jun 30, 05:00 UTC | Jun 30, 09:40 UTC | 4h 40m |
| 2026-06-29 | CMP476 | - | Jun 29, 18:44 UTC | Jun 29, 23:34 UTC | 4h 50m |
| 2026-06-28 | CMP476 | - | Jun 28, 22:59 UTC | Jun 29, 22:30 UTC | 23h 30m |
| 2026-06-28 | CMP333 | - | Jun 28, 21:30 UTC | Jun 28, 23:20 UTC | 1h 50m |
| 2026-06-28 | CMP334 | - | Jun 28, 01:29 UTC | Jun 28, 18:34 UTC | 17h 5m |
| 2026-06-27 | CMP817 | IAD → PTY | Jun 27, 12:34 UTC | Jun 28, 11:50 UTC | 23h 15m |
| 2026-06-27 | CMP817 | IAD → PTY | Jun 27, 10:40 UTC | Jun 28, 01:40 UTC | 15h 0m |
| 2026-06-26 | CMP404 | - | Jun 26, 23:00 UTC | Jun 27, 08:29 UTC | 9h 30m |
| 2026-06-26 | CMP128 | PTY → SDQ | Jun 26, 01:34 UTC | Jun 26, 20:00 UTC | 18h 25m |
| 2026-06-25 | CMP477 | - | Jun 25, 06:35 UTC | Jun 26, 01:34 UTC | 19h 0m |
| 2026-06-25 | CMP477 | - | Jun 25, 05:20 UTC | Jun 26, 01:34 UTC | 20h 15m |
| 2026-06-24 | CMP476 | IAD → DEN | Jun 24, 10:30 UTC | Jun 25, 00:09 UTC | 13h 40m |
| 2026-06-24 | CMP404 | - | Jun 24, 05:05 UTC | Jun 24, 08:39 UTC | 3h 35m |
| 2026-06-22 | CMP734 | - | Jun 22, 01:55 UTC | Jun 22, 18:19 UTC | 16h 25m |
| 2026-06-21 | CMP117 | - | Jun 21, 07:09 UTC | Jun 22, 02:14 UTC | 19h 5m |
| 2026-06-21 | CMP117 | - | Jun 21, 04:34 UTC | Jun 22, 02:14 UTC | 21h 40m |
| 2026-06-21 | CMP117 | - | Jun 21, 03:14 UTC | Jun 22, 02:14 UTC | 23h 0m |
| 2026-06-21 | CMP626 | ORD → YYZ | Jun 21, 00:14 UTC | Jun 21, 01:19 UTC | 1h 5m |
| 2026-06-20 | CMP626 | - | Jun 20, 14:19 UTC | Jun 20, 21:55 UTC | 7h 35m |
| 2026-06-19 | CMP626 | - | Jun 19, 22:34 UTC | Jun 20, 21:55 UTC | 23h 20m |
| 2026-06-19 | CMP891 | - | Jun 19, 21:44 UTC | Jun 20, 14:24 UTC | 16h 40m |
| 2026-06-19 | CMP253 | LAS → ATL | Jun 19, 07:49 UTC | Jun 19, 19:39 UTC | 11h 50m |
| 2026-06-18 | CMP456 | - | Jun 18, 20:20 UTC | Jun 19, 05:00 UTC | 8h 39m |
| 2026-06-18 | CMP817 | IAD → PTY | Jun 18, 10:30 UTC | Jun 18, 14:01 UTC | 3h 30m |
| 2026-06-17 | CMP404 | MCO → IAD | Jun 17, 22:55 UTC | Jun 18, 08:10 UTC | 9h 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.