sensors Mode-S transponder
0C21DC
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9812CMP · BOEING 737 MAX 8
- Hex
- 0C21DC
- Octal
- 03020734
- Decimal
- 795,100
- Country
- SR
- Tail
- HP-9812CMP
- Type
- B38M
- Flights observed
- 186
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21DC 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 |
|---|---|---|---|
| CMP821 | - | 15 | 2026-06-15 |
| CMP820 | - | 10 | 2026-06-28 |
| CMP765 | Copa Airlines | 9 | 2026-05-15 |
| CMP424 | - | 7 | 2026-07-04 |
| CMP422 | Copa Airlines | 5 | 2026-04-28 |
| CMP420 | - | 5 | 2026-07-02 |
| CMP195 | - | 5 | 2026-07-08 |
| CMP194 | - | 5 | 2026-07-07 |
| CMP122 | Copa Airlines | 5 | 2026-07-13 |
| CMP753 | Copa Airlines | 4 | 2026-05-02 |
| CMP478 | Copa Airlines | 4 | 2026-05-20 |
| CMP456 | - | 4 | 2026-07-11 |
| CMP423 | - | 4 | 2026-07-03 |
| CMP421 | Copa Airlines | 4 | 2026-05-23 |
| CMP236 | Copa Airlines | 4 | 2026-06-19 |
| CMP752 | Copa Airlines | 3 | 2026-06-02 |
| CMP489 | Copa Airlines | 3 | 2026-06-07 |
| CMP484 | Copa Airlines | 3 | 2026-04-28 |
| CMP479 | - | 3 | 2026-06-29 |
| CMP446 | Copa Airlines | 3 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CMP764 | - | Jul 14, 19:10 UTC | Jul 14, 19:20 UTC | 10m |
| 2026-07-13 | CMP745 | - | Jul 13, 22:35 UTC | Jul 14, 14:20 UTC | 15h 45m |
| 2026-07-13 | CMP745 | - | Jul 13, 17:15 UTC | Jul 14, 14:20 UTC | 21h 5m |
| 2026-07-13 | CMP122 | PTY → CUN | Jul 13, 14:20 UTC | Jul 13, 16:00 UTC | 1h 40m |
| 2026-07-13 | CMP208 | - | Jul 13, 00:30 UTC | Jul 13, 00:40 UTC | 10m |
| 2026-07-12 | CMP326 | - | Jul 12, 19:25 UTC | Jul 12, 20:50 UTC | 1h 25m |
| 2026-07-12 | CMP253 | LAS → CUN | Jul 12, 07:45 UTC | Jul 12, 17:50 UTC | 10h 5m |
| 2026-07-11 | CMP456 | CUN → LAS | Jul 11, 17:35 UTC | Jul 12, 05:05 UTC | 11h 30m |
| 2026-07-11 | CMP122 | PTY → CUN | Jul 11, 10:25 UTC | Jul 11, 15:40 UTC | 5h 15m |
| 2026-07-10 | CMP477 | - | Jul 10, 05:00 UTC | Jul 10, 21:05 UTC | 16h 5m |
| 2026-07-09 | CMP476 | GUA → DEN | Jul 9, 13:25 UTC | Jul 10, 00:10 UTC | 10h 45m |
| 2026-07-08 | CMP195 | - | Jul 8, 12:30 UTC | Jul 9, 04:25 UTC | 15h 55m |
| 2026-07-07 | CMP194 | - | Jul 7, 11:05 UTC | Jul 8, 06:00 UTC | 18h 55m |
| 2026-07-07 | CMP194 | - | Jul 7, 10:25 UTC | Jul 8, 06:00 UTC | 19h 35m |
| 2026-07-06 | CMP312 | BOS → PTY | Jul 6, 12:55 UTC | Jul 7, 02:50 UTC | 13h 55m |
| 2026-07-05 | CMP366 | - | Jul 5, 23:30 UTC | Jul 6, 02:15 UTC | 2h 45m |
| 2026-07-05 | CMP892 | PTY → ADZ | Jul 5, 16:20 UTC | Jul 5, 16:25 UTC | 5m |
| 2026-07-04 | CMP424 | - | Jul 4, 06:30 UTC | Jul 4, 15:20 UTC | 8h 50m |
| 2026-07-04 | CMP424 | - | Jul 4, 04:40 UTC | Jul 4, 05:05 UTC | 25m |
| 2026-07-03 | CMP423 | - | Jul 3, 14:25 UTC | Jul 4, 03:05 UTC | 12h 40m |
| 2026-07-02 | CMP420 | - | Jul 2, 23:25 UTC | Jul 3, 23:00 UTC | 23h 35m |
| 2026-07-02 | CMP420 | - | Jul 2, 17:35 UTC | Jul 3, 16:55 UTC | 23h 20m |
| 2026-07-02 | CMP420 | - | Jul 2, 15:10 UTC | Jul 3, 14:30 UTC | 23h 20m |
| 2026-07-02 | CMP424 | - | Jul 2, 05:45 UTC | Jul 3, 00:15 UTC | 18h 30m |
| 2026-07-02 | CMP424 | - | Jul 2, 04:30 UTC | Jul 3, 00:15 UTC | 19h 45m |
| 2026-07-01 | CMP423 | - | Jul 1, 16:40 UTC | Jul 2, 03:00 UTC | 10h 20m |
| 2026-06-30 | CMP316 | - | Jun 30, 23:55 UTC | Jul 1, 15:05 UTC | 15h 10m |
| 2026-06-29 | CMP479 | - | Jun 29, 18:49 UTC | Jun 29, 21:09 UTC | 2h 20m |
| 2026-06-28 | CMP820 | - | Jun 28, 22:34 UTC | Jun 29, 16:19 UTC | 17h 45m |
| 2026-06-28 | CMP894 | JFK → PTY | Jun 28, 18:00 UTC | Jun 28, 18:10 UTC | 10m |
| 2026-06-27 | CMP361 | - | Jun 27, 23:04 UTC | Jun 28, 00:04 UTC | 1h 0m |
| 2026-06-27 | CMP380 | GUA → MGA | Jun 27, 04:49 UTC | Jun 27, 14:29 UTC | 9h 40m |
| 2026-06-26 | CMP195 | MEX → PTY | Jun 26, 12:10 UTC | Jun 27, 04:49 UTC | 16h 40m |
| 2026-06-25 | CMP891 | ATL → MEX | Jun 25, 21:29 UTC | Jun 26, 06:15 UTC | 8h 45m |
| 2026-06-25 | CMP253 | LAS → ATL | Jun 25, 07:39 UTC | Jun 25, 19:29 UTC | 11h 50m |
| 2026-06-24 | CMP456 | GUA → LAS | Jun 24, 13:24 UTC | Jun 25, 05:05 UTC | 15h 40m |
| 2026-06-23 | CMP496 | - | Jun 23, 15:19 UTC | Jun 24, 04:30 UTC | 13h 10m |
| 2026-06-21 | CMP709 | - | Jun 21, 21:05 UTC | Jun 22, 00:29 UTC | 3h 25m |
| 2026-06-21 | CMP708 | PTY → BWI | Jun 21, 15:15 UTC | Jun 21, 19:09 UTC | 3h 55m |
| 2026-06-19 | CMP236 | ORD → PTY | Jun 19, 15:04 UTC | Jun 20, 09:09 UTC | 18h 5m |
| 2026-06-19 | CMP236 | ORD → PTY | Jun 19, 13:24 UTC | Jun 20, 09:09 UTC | 19h 45m |
| 2026-06-19 | CMP844 | PTY → ORD | Jun 19, 06:35 UTC | Jun 19, 11:09 UTC | 4h 35m |
| 2026-06-18 | CMP844 | PTY → ORD | Jun 18, 10:30 UTC | Jun 19, 08:59 UTC | 22h 29m |
| 2026-06-15 | CMP820 | - | Jun 15, 23:04 UTC | Jun 16, 17:30 UTC | 18h 25m |
| 2026-06-15 | CMP821 | - | Jun 15, 21:30 UTC | Jun 16, 17:30 UTC | 20h 0m |
| 2026-06-15 | CMP821 | - | Jun 15, 16:15 UTC | Jun 16, 09:20 UTC | 17h 5m |
| 2026-06-15 | CMP869 | PTY → SDQ | Jun 15, 14:15 UTC | Jun 15, 14:24 UTC | 10m |
| 2026-06-11 | CMP459 | MCO → PTY | Jun 11, 21:20 UTC | Jun 11, 22:05 UTC | 45m |
| 2026-06-11 | CMP862 | PTY → MCO | Jun 11, 10:25 UTC | Jun 11, 18:00 UTC | 7h 35m |
| 2026-06-10 | CMP709 | BWI → PTY | Jun 10, 22:25 UTC | Jun 11, 00:40 UTC | 2h 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.
Prefer a tail-number view? See the HP-9812CMP page for operator, model, and routing details .