sensors Mode-S transponder
0C21DF
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9815CMP · BOEING 737 MAX 8
- Hex
- 0C21DF
- Octal
- 03020737
- Decimal
- 795,103
- Country
- SR
- Tail
- HP-9815CMP
- Type
- B38M
- Flights observed
- 200
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21DF 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 |
|---|---|---|---|
| CMP820 | - | 13 | 2026-06-25 |
| CMP752 | Copa Airlines | 7 | 2026-05-10 |
| CMP420 | Copa Airlines | 6 | 2026-05-09 |
| CMP205 | Copa Airlines | 6 | 2026-06-09 |
| CMP122 | Copa Airlines | 6 | 2026-06-29 |
| CMP891 | - | 5 | 2026-07-10 |
| CMP450 | - | 5 | 2026-07-04 |
| CMP380 | Copa Airlines | 5 | 2026-05-19 |
| CMP361 | - | 5 | 2026-06-30 |
| CMP149 | - | 5 | 2026-06-30 |
| CMP880 | - | 4 | 2026-07-10 |
| CMP760 | - | 4 | 2026-07-04 |
| CMP753 | Copa Airlines | 4 | 2026-05-12 |
| CMP484 | Copa Airlines | 4 | 2026-07-13 |
| CMP456 | - | 4 | 2026-06-22 |
| CMP424 | Copa Airlines | 4 | 2026-04-29 |
| CMP316 | Copa Airlines | 4 | 2026-06-08 |
| CMP195 | Copa Airlines | 4 | 2026-05-23 |
| CMP194 | Copa Airlines | 4 | 2026-05-23 |
| CMP868 | Copa Airlines | 3 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CMP484 | YUL → PTY | Jul 13, 12:40 UTC | Jul 14, 09:45 UTC | 21h 5m |
| 2026-07-12 | CMP422 | - | Jul 12, 20:20 UTC | Jul 13, 04:20 UTC | 8h 0m |
| 2026-07-12 | CMP290 | - | Jul 12, 09:40 UTC | Jul 12, 18:40 UTC | 9h 0m |
| 2026-07-11 | CMP291 | - | Jul 11, 13:55 UTC | Jul 12, 08:05 UTC | 18h 10m |
| 2026-07-11 | CMP291 | - | Jul 11, 13:00 UTC | Jul 12, 08:05 UTC | 19h 5m |
| 2026-07-10 | CMP891 | ATL → GUA | Jul 10, 21:20 UTC | Jul 11, 04:40 UTC | 7h 20m |
| 2026-07-10 | CMP880 | - | Jul 10, 01:05 UTC | Jul 10, 19:15 UTC | 18h 10m |
| 2026-07-09 | CMP880 | - | Jul 9, 22:20 UTC | Jul 10, 19:15 UTC | 20h 55m |
| 2026-07-09 | CMP880 | - | Jul 9, 21:30 UTC | Jul 10, 19:15 UTC | 21h 45m |
| 2026-07-09 | CMP312 | - | Jul 9, 13:50 UTC | Jul 10, 09:15 UTC | 19h 25m |
| 2026-07-09 | CMP312 | - | Jul 9, 13:00 UTC | Jul 10, 09:15 UTC | 20h 15m |
| 2026-07-08 | CMP366 | CUN → BOS | Jul 8, 16:35 UTC | Jul 9, 02:20 UTC | 9h 45m |
| 2026-07-08 | CMP293 | PTY → CUN | Jul 8, 08:00 UTC | Jul 8, 14:30 UTC | 6h 30m |
| 2026-07-07 | CMP132 | - | Jul 7, 22:15 UTC | Jul 8, 05:15 UTC | 7h 0m |
| 2026-07-07 | CMP131 | PTY → LIM | Jul 7, 19:50 UTC | Jul 7, 20:30 UTC | 40m |
| 2026-07-06 | CMP745 | - | Jul 6, 23:45 UTC | Jul 7, 08:30 UTC | 8h 45m |
| 2026-07-06 | CMP407 | GUA → PTY | Jul 6, 10:35 UTC | Jul 7, 08:30 UTC | 21h 55m |
| 2026-07-06 | CMP390 | - | Jul 6, 00:35 UTC | Jul 6, 01:40 UTC | 1h 5m |
| 2026-07-04 | CMP760 | - | Jul 4, 19:00 UTC | Jul 4, 19:40 UTC | 40m |
| 2026-07-04 | CMP761 | PTY → LIM | Jul 4, 16:20 UTC | Jul 4, 17:00 UTC | 40m |
| 2026-07-04 | CMP451 | - | Jul 4, 09:45 UTC | Jul 4, 10:00 UTC | 15m |
| 2026-07-04 | CMP450 | - | Jul 4, 01:55 UTC | Jul 4, 02:10 UTC | 15m |
| 2026-07-03 | CMP760 | LIM → PTY | Jul 3, 18:55 UTC | Jul 3, 19:40 UTC | 45m |
| 2026-07-02 | CMP891 | - | Jul 2, 21:50 UTC | Jul 3, 16:55 UTC | 19h 5m |
| 2026-07-02 | CMP891 | - | Jul 2, 21:35 UTC | Jul 3, 16:55 UTC | 19h 20m |
| 2026-07-02 | CMP880 | MIA → ATL | Jul 2, 10:15 UTC | Jul 2, 19:45 UTC | 9h 30m |
| 2026-07-02 | CMP427 | - | Jul 2, 00:10 UTC | Jul 2, 02:05 UTC | 1h 55m |
| 2026-06-30 | CMP361 | - | Jun 30, 22:40 UTC | Jun 30, 23:45 UTC | 1h 5m |
| 2026-06-30 | CMP149 | - | Jun 30, 07:30 UTC | Jun 30, 14:35 UTC | 7h 5m |
| 2026-06-29 | CMP138 | CUN → MEX | Jun 29, 17:10 UTC | Jun 30, 00:45 UTC | 7h 35m |
| 2026-06-29 | CMP122 | PTY → CUN | Jun 29, 13:39 UTC | Jun 29, 15:19 UTC | 1h 40m |
| 2026-06-26 | CMP467 | - | Jun 26, 20:44 UTC | Jun 26, 23:49 UTC | 3h 5m |
| 2026-06-26 | CMP466 | PTY → RDU | Jun 26, 06:29 UTC | Jun 26, 18:24 UTC | 11h 55m |
| 2026-06-26 | CMP448 | - | Jun 26, 00:50 UTC | Jun 26, 04:20 UTC | 3h 30m |
| 2026-06-25 | CMP448 | - | Jun 25, 08:55 UTC | Jun 26, 04:20 UTC | 19h 25m |
| 2026-06-25 | CMP448 | - | Jun 25, 05:50 UTC | Jun 26, 04:20 UTC | 22h 30m |
| 2026-06-25 | CMP820 | - | Jun 25, 05:20 UTC | Jun 26, 03:45 UTC | 22h 25m |
| 2026-06-25 | CMP820 | - | Jun 25, 01:50 UTC | Jun 26, 00:50 UTC | 23h 0m |
| 2026-06-24 | CMP820 | - | Jun 24, 17:25 UTC | Jun 25, 09:45 UTC | 16h 20m |
| 2026-06-23 | CMP733 | - | Jun 23, 23:55 UTC | Jun 24, 15:14 UTC | 15h 20m |
| 2026-06-23 | CMP484 | YUL → PTY | Jun 23, 17:50 UTC | Jun 24, 15:14 UTC | 21h 25m |
| 2026-06-23 | CMP484 | YUL → PTY | Jun 23, 15:50 UTC | Jun 24, 15:14 UTC | 23h 25m |
| 2026-06-23 | CMP484 | YUL → PTY | Jun 23, 15:24 UTC | Jun 24, 08:20 UTC | 16h 55m |
| 2026-06-22 | CMP422 | CUN → YUL | Jun 22, 19:09 UTC | Jun 23, 04:39 UTC | 9h 30m |
| 2026-06-22 | CMP253 | LAS → CUN | Jun 22, 07:54 UTC | Jun 22, 17:40 UTC | 9h 45m |
| 2026-06-22 | CMP456 | - | Jun 22, 01:10 UTC | Jun 22, 04:49 UTC | 3h 40m |
| 2026-06-21 | CMP456 | - | Jun 21, 18:35 UTC | Jun 22, 00:44 UTC | 6h 10m |
| 2026-06-20 | CMP361 | - | Jun 20, 22:50 UTC | Jun 21, 16:39 UTC | 17h 50m |
| 2026-06-20 | CMP149 | - | Jun 20, 07:34 UTC | Jun 20, 13:44 UTC | 6h 10m |
| 2026-06-19 | CMP138 | BOG → MEX | Jun 19, 17:59 UTC | Jun 20, 00:44 UTC | 6h 45m |
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 HP-9815CMP page for operator, model, and routing details .