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
- 207
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 1h ago
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 | - | 7 | 2026-06-22 |
| CMP380 | Copa Airlines | 7 | 2026-06-26 |
| CMP361 | - | 7 | 2026-06-26 |
| CMP476 | - | 6 | 2026-06-21 |
| CMP456 | - | 6 | 2026-07-12 |
| CMP761 | Copa Airlines | 5 | 2026-05-19 |
| CMP423 | Copa Airlines | 5 | 2026-06-13 |
| CMP421 | Copa Airlines | 5 | 2026-05-31 |
| CMP316 | Copa Airlines | 5 | 2026-05-30 |
| CMP149 | Copa Airlines | 5 | 2026-05-27 |
| CMP858 | Copa Airlines | 4 | 2026-06-03 |
| CMP844 | - | 4 | 2026-07-11 |
| CMP446 | Copa Airlines | 4 | 2026-06-05 |
| CMP424 | - | 4 | 2026-06-14 |
| CMP138 | Copa Airlines | 4 | 2026-05-26 |
| CMP820 | Copa Airlines | 3 | 2026-06-09 |
| CMP760 | Copa Airlines | 3 | 2026-06-10 |
| CMP470 | Copa Airlines | 3 | 2026-06-06 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | CMP891 | - | Jul 13, 22:05 UTC | Jul 14, 00:45 UTC | 2h 40m |
| 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 |
| 2026-06-27 | CMP389 | GUA → PTY | Jun 27, 13:24 UTC | Jun 28, 12:39 UTC | 23h 15m |
| 2026-06-26 | CMP361 | GUA → GUA | Jun 26, 22:49 UTC | Jun 27, 04:49 UTC | 6h 0m |
| 2026-06-26 | CMP361 | - | Jun 26, 16:39 UTC | Jun 26, 21:04 UTC | 4h 25m |
| 2026-06-26 | CMP380 | GUA → MGA | Jun 26, 13:30 UTC | Jun 26, 14:44 UTC | 1h 15m |
| 2026-06-25 | CMP782 | - | Jun 25, 09:25 UTC | Jun 25, 11:25 UTC | 2h 0m |
| 2026-06-24 | CMP781 | - | Jun 24, 18:44 UTC | Jun 25, 02:49 UTC | 8h 5m |
| 2026-06-24 | CMP298 | PTY → SDQ | Jun 24, 16:45 UTC | Jun 24, 16:54 UTC | 10m |
| 2026-06-24 | CMP246 | - | Jun 24, 10:39 UTC | Jun 24, 12:25 UTC | 1h 45m |
| 2026-06-23 | CMP239 | MCO → PTY | Jun 23, 16:14 UTC | Jun 23, 23:44 UTC | 7h 30m |
| 2026-06-22 | CMP477 | - | Jun 22, 06:49 UTC | Jun 23, 02:20 UTC | 19h 30m |
| 2026-06-22 | CMP477 | DEN → MCO | Jun 22, 05:04 UTC | Jun 23, 02:20 UTC | 21h 15m |
| 2026-06-21 | CMP476 | - | Jun 21, 18:50 UTC | Jun 21, 23:59 UTC | 5h 10m |
| 2026-06-20 | CMP476 | - | Jun 20, 22:50 UTC | Jun 21, 22:44 UTC | 23h 55m |
| 2026-06-20 | CMP709 | - | Jun 20, 21:00 UTC | Jun 21, 00:29 UTC | 3h 30m |
| 2026-06-19 | CMP708 | PTY → BWI | Jun 19, 22:39 UTC | Jun 20, 19:09 UTC | 20h 30m |
| 2026-06-19 | CMP361 | GUA → GUA | Jun 19, 17:14 UTC | Jun 19, 21:14 UTC | 4h 0m |
| 2026-06-19 | CMP380 | GUA → MGA | Jun 19, 08:09 UTC | Jun 19, 14:39 UTC | 6h 30m |
| 2026-06-19 | CMP314 | - | Jun 19, 04:14 UTC | Jun 19, 05:19 UTC | 1h 5m |
| 2026-06-18 | CMP262 | CUN → PTY | Jun 18, 17:00 UTC | Jun 18, 17:40 UTC | 40m |
| 2026-06-18 | CMP315 | - | Jun 18, 08:00 UTC | Jun 18, 13:30 UTC | 5h 30m |
| 2026-06-17 | CMP709 | - | Jun 17, 21:00 UTC | Jun 18, 05:30 UTC | 8h 30m |
| 2026-06-17 | CMP708 | PTY → BWI | Jun 17, 15:20 UTC | Jun 17, 19:20 UTC | 4h 0m |
| 2026-06-16 | CMP123 | - | Jun 16, 16:50 UTC | Jun 16, 18:15 UTC | 1h 25m |
| 2026-06-16 | CMP122 | PTY → CUN | Jun 16, 13:40 UTC | Jun 16, 15:15 UTC | 1h 35m |
| 2026-06-15 | CMP236 | ORD → PTY | Jun 15, 14:50 UTC | Jun 16, 14:45 UTC | 23h 55m |
| 2026-06-15 | CMP236 | ORD → PTY | Jun 15, 13:15 UTC | Jun 15, 15:50 UTC | 2h 35m |
| 2026-06-14 | CMP844 | PTY → ORD | Jun 14, 13:40 UTC | Jun 15, 08:20 UTC | 18h 40m |
| 2026-06-14 | CMP844 | PTY → ORD | Jun 14, 09:05 UTC | Jun 15, 08:20 UTC | 23h 15m |
| 2026-06-14 | CMP844 | PTY → ORD | Jun 14, 06:50 UTC | Jun 15, 06:45 UTC | 23h 54m |
| 2026-06-14 | CMP424 | - | Jun 14, 04:50 UTC | Jun 14, 18:20 UTC | 13h 30m |
| 2026-06-13 | CMP423 | YUL → PTY | Jun 13, 14:25 UTC | Jun 14, 03:20 UTC | 12h 55m |
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 .