sensors Mode-S transponder
0C21A3
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9801CMP · BOEING 737 MAX 8
- Hex
- 0C21A3
- Octal
- 03020643
- Decimal
- 795,043
- Country
- SR
- Tail
- HP-9801CMP
- Type
- B38M
- Flights observed
- 238
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- Jul 26, 22:45 UTC
Last known position
Country allocation
The ICAO 24-bit address 0C21A3 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 |
|---|---|---|---|
| CMP734 | - | 11 | 2026-06-13 |
| CMP752 | Copa Airlines | 8 | 2026-05-20 |
| CMP477 | - | 8 | 2026-07-17 |
| CMP476 | - | 7 | 2026-07-16 |
| CMP380 | Copa Airlines | 7 | 2026-06-26 |
| CMP361 | - | 7 | 2026-06-26 |
| CMP316 | - | 7 | 2026-07-22 |
| CMP456 | - | 6 | 2026-07-12 |
| CMP149 | Copa Airlines | 6 | 2026-07-25 |
| CMP761 | Copa Airlines | 5 | 2026-05-19 |
| CMP423 | Copa Airlines | 5 | 2026-06-13 |
| CMP421 | Copa Airlines | 5 | 2026-05-31 |
| CMP138 | Copa Airlines | 5 | 2026-07-24 |
| CMP858 | Copa Airlines | 4 | 2026-06-03 |
| CMP844 | - | 4 | 2026-07-11 |
| CMP446 | Copa Airlines | 4 | 2026-06-05 |
| CMP424 | - | 4 | 2026-06-14 |
| CMP317 | - | 4 | 2026-07-23 |
| CMP220 | Copa Airlines | 4 | 2026-07-22 |
| CMP820 | Copa Airlines | 3 | 2026-06-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CMP821 | PTY → POA | Jul 26, 17:55 UTC | Jul 26, 22:45 UTC | 4h 50m |
| 2026-07-26 | CMP463 | PTY → COR | Jul 26, 15:15 UTC | Jul 26, 15:25 UTC | 10m |
| 2026-07-26 | CMP141 | PTY → MAO | Jul 26, 03:35 UTC | Jul 26, 14:25 UTC | 10h 51m |
| 2026-07-25 | CMP141 | PTY → MAO | Jul 25, 08:50 UTC | Jul 26, 05:25 UTC | 20h 35m |
| 2026-07-25 | CMP149 | MEX → PTY | Jul 25, 07:30 UTC | Jul 26, 05:25 UTC | 21h 55m |
| 2026-07-24 | CMP138 | PTY → MEX | Jul 24, 11:30 UTC | Jul 25, 01:10 UTC | 13h 40m |
| 2026-07-24 | CMP771 | CUR → PTY | Jul 24, 00:00 UTC | Jul 24, 04:15 UTC | 4h 15m |
| 2026-07-23 | CMP317 | - | Jul 23, 16:05 UTC | Jul 23, 22:20 UTC | 6h 15m |
| 2026-07-22 | CMP316 | - | Jul 22, 19:35 UTC | Jul 23, 14:35 UTC | 19h 0m |
| 2026-07-22 | CMP316 | - | Jul 22, 17:45 UTC | Jul 23, 14:35 UTC | 20h 50m |
| 2026-07-22 | CMP220 | VVI → PTY | Jul 22, 04:50 UTC | Jul 23, 00:50 UTC | 20h 0m |
| 2026-07-22 | CMP220 | VVI → PTY | Jul 22, 03:35 UTC | Jul 23, 00:50 UTC | 21h 15m |
| 2026-07-22 | CMP220 | VVI → PTY | Jul 22, 00:25 UTC | Jul 22, 19:45 UTC | 19h 20m |
| 2026-07-21 | CMP220 | VVI → PTY | Jul 21, 22:35 UTC | Jul 22, 19:45 UTC | 21h 10m |
| 2026-07-21 | CMP221 | - | Jul 21, 18:20 UTC | Jul 22, 05:25 UTC | 11h 5m |
| 2026-07-21 | CMP431 | BOG → SJO | Jul 21, 12:25 UTC | Jul 21, 16:50 UTC | 4h 25m |
| 2026-07-21 | CMP430 | PTY → MIA | Jul 21, 04:30 UTC | Jul 21, 05:05 UTC | 35m |
| 2026-07-20 | CMP157 | - | Jul 20, 23:35 UTC | Jul 20, 23:45 UTC | 10m |
| 2026-07-20 | CMP129 | - | Jul 20, 17:20 UTC | Jul 20, 21:50 UTC | 4h 30m |
| 2026-07-20 | CMP836 | - | Jul 20, 04:45 UTC | Jul 20, 14:30 UTC | 9h 45m |
| 2026-07-19 | CMP137 | MEX → PTY | Jul 19, 16:15 UTC | Jul 20, 03:25 UTC | 11h 10m |
| 2026-07-18 | CMP194 | - | Jul 18, 23:15 UTC | Jul 19, 06:00 UTC | 6h 45m |
| 2026-07-18 | CMP324 | PTY → CUN | Jul 18, 16:45 UTC | Jul 18, 21:35 UTC | 4h 50m |
| 2026-07-17 | CMP317 | - | Jul 17, 16:04 UTC | Jul 18, 05:00 UTC | 12h 56m |
| 2026-07-17 | CMP477 | DEN → CUN | Jul 17, 04:59 UTC | Jul 17, 14:24 UTC | 9h 25m |
| 2026-07-16 | CMP476 | - | Jul 16, 18:50 UTC | Jul 16, 23:35 UTC | 4h 45m |
| 2026-07-15 | CMP412 | BOG → PTY | Jul 15, 14:20 UTC | Jul 15, 14:40 UTC | 20m |
| 2026-07-14 | CMP626 | - | Jul 14, 08:50 UTC | Jul 15, 03:20 UTC | 18h 29m |
| 2026-07-14 | CMP626 | - | Jul 14, 08:05 UTC | Jul 15, 03:20 UTC | 19h 14m |
| 2026-07-14 | CMP625 | - | Jul 14, 05:00 UTC | Jul 15, 03:20 UTC | 22h 19m |
| 2026-07-13 | CMP625 | - | Jul 13, 22:50 UTC | Jul 14, 16:55 UTC | 18h 5m |
| 2026-07-13 | CMP891 | - | Jul 13, 22:05 UTC | Jul 14, 16:55 UTC | 18h 50m |
| 2026-07-13 | CMP253 | LAS → ATL | Jul 13, 07:50 UTC | Jul 13, 20:05 UTC | 12h 15m |
| 2026-07-12 | CMP456 | ORD → LAS | Jul 12, 13:15 UTC | Jul 13, 05:10 UTC | 15h 55m |
| 2026-07-11 | CMP844 | ATL → ORD | Jul 11, 21:25 UTC | Jul 12, 08:40 UTC | 11h 15m |
| 2026-07-11 | CMP253 | LAS → ATL | Jul 11, 07:55 UTC | Jul 11, 19:30 UTC | 11h 35m |
| 2026-07-10 | CMP456 | - | Jul 10, 10:50 UTC | Jul 11, 05:25 UTC | 18h 35m |
| 2026-07-10 | CMP456 | IAD → LAS | Jul 10, 10:30 UTC | Jul 11, 05:25 UTC | 18h 56m |
| 2026-07-10 | CMP404 | - | Jul 10, 04:30 UTC | Jul 10, 07:55 UTC | 3h 25m |
| 2026-07-04 | CMP483 | - | Jul 4, 20:25 UTC | Jul 4, 20:35 UTC | 10m |
| 2026-07-04 | CMP480 | PTY → STI | Jul 4, 18:15 UTC | Jul 4, 18:30 UTC | 15m |
| 2026-07-03 | CMP435 | MCO → PTY | Jul 3, 12:20 UTC | Jul 3, 14:30 UTC | 2h 10m |
| 2026-07-02 | CMP434 | - | Jul 2, 23:45 UTC | Jul 3, 02:05 UTC | 2h 20m |
| 2026-07-02 | CMP115 | - | Jul 2, 04:40 UTC | Jul 2, 04:50 UTC | 10m |
| 2026-07-01 | CMP884 | - | Jul 1, 01:25 UTC | Jul 1, 15:35 UTC | 14h 10m |
| 2026-06-30 | CMP881 | - | Jun 30, 09:10 UTC | Jul 1, 01:40 UTC | 16h 30m |
| 2026-06-29 | CMP195 | MEX → PTY | Jun 29, 12:49 UTC | Jun 30, 09:15 UTC | 20h 26m |
| 2026-06-29 | CMP195 | MEX → PTY | Jun 29, 12:20 UTC | Jun 30, 09:15 UTC | 20h 56m |
| 2026-06-28 | CMP717 | - | Jun 28, 19:29 UTC | Jun 29, 06:19 UTC | 10h 50m |
| 2026-06-28 | CMP185 | - | Jun 28, 12:19 UTC | Jun 28, 16:35 UTC | 4h 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-9801CMP page for operator, model, and routing details .