sensors Mode-S transponder
A12322
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N1721M · operated by BANK OF UTAH TRUSTEE
- Hex
- A12322
- Octal
- 50221442
- Decimal
- 10,560,290
- Country
- US
- Tail
- N1721M
- Type
- CL30
- Flights observed
- 58
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 10h ago
Last known position
Country allocation
The ICAO 24-bit address A12322 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| JAS21 | - | 58 | 2026-07-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-20 | JAS21 | TEB → IAD | Jul 20, 19:35 UTC | Jul 20, 20:20 UTC | 45m |
| 2026-07-20 | JAS21 | - | Jul 20, 16:10 UTC | Jul 20, 18:10 UTC | 2h 0m |
| 2026-07-19 | JAS21 | - | Jul 19, 22:50 UTC | Jul 20, 01:05 UTC | 2h 15m |
| 2026-07-19 | JAS21 | - | Jul 19, 19:10 UTC | Jul 19, 21:55 UTC | 2h 45m |
| 2026-07-18 | JAS21 | - | Jul 18, 22:00 UTC | Jul 19, 01:40 UTC | 3h 40m |
| 2026-07-17 | JAS21 | - | Jul 17, 23:00 UTC | Jul 18, 22:30 UTC | 23h 31m |
| 2026-07-17 | JAS21 | - | Jul 17, 20:55 UTC | Jul 17, 21:44 UTC | 50m |
| 2026-07-17 | JAS21 | - | Jul 17, 16:59 UTC | Jul 17, 18:00 UTC | 1h 0m |
| 2026-07-16 | JAS21 | - | Jul 16, 23:10 UTC | Jul 17, 03:55 UTC | 4h 45m |
| 2026-07-16 | JAS21 | IAD → HPN | Jul 16, 20:05 UTC | Jul 16, 21:00 UTC | 55m |
| 2026-07-07 | JAS21 | IAD → IAD | Jul 7, 11:05 UTC | Jul 7, 15:55 UTC | 4h 50m |
| 2026-07-06 | JAS21 | - | Jul 6, 16:10 UTC | Jul 6, 17:40 UTC | 1h 30m |
| 2026-07-06 | JAS21 | - | Jul 6, 13:55 UTC | Jul 6, 15:00 UTC | 1h 5m |
| 2026-07-05 | JAS21 | - | Jul 5, 19:10 UTC | Jul 5, 20:55 UTC | 1h 45m |
| 2026-07-05 | JAS21 | - | Jul 5, 14:15 UTC | Jul 5, 16:40 UTC | 2h 25m |
| 2026-07-05 | JAS21 | - | Jul 5, 10:20 UTC | Jul 5, 11:45 UTC | 1h 25m |
| 2026-07-02 | JAS21 | IAD → IAD | Jul 2, 12:25 UTC | Jul 2, 17:55 UTC | 5h 30m |
| 2026-06-27 | JAS21 | - | Jun 27, 22:49 UTC | Jun 27, 23:29 UTC | 40m |
| 2026-06-27 | JAS21 | - | Jun 27, 19:15 UTC | Jun 27, 22:09 UTC | 2h 55m |
| 2026-06-27 | JAS21 | - | Jun 27, 00:34 UTC | Jun 27, 22:09 UTC | 21h 35m |
| 2026-06-26 | JAS21 | - | Jun 26, 23:49 UTC | Jun 27, 22:09 UTC | 22h 20m |
| 2026-06-26 | JAS21 | - | Jun 26, 19:00 UTC | Jun 26, 22:49 UTC | 3h 50m |
| 2026-06-25 | JAS21 | - | Jun 25, 21:35 UTC | Jun 25, 23:09 UTC | 1h 35m |
| 2026-06-25 | JAS21 | - | Jun 25, 16:29 UTC | Jun 25, 20:30 UTC | 4h 0m |
| 2026-06-25 | JAS21 | - | Jun 25, 13:20 UTC | Jun 25, 14:59 UTC | 1h 40m |
| 2026-06-22 | JAS21 | - | Jun 22, 14:24 UTC | Jun 22, 17:55 UTC | 3h 30m |
| 2026-06-22 | JAS21 | - | Jun 22, 12:30 UTC | Jun 22, 13:14 UTC | 45m |
| 2026-06-21 | JAS21 | - | Jun 21, 20:59 UTC | Jun 21, 21:54 UTC | 55m |
| 2026-06-21 | JAS21 | - | Jun 21, 16:49 UTC | Jun 21, 20:14 UTC | 3h 25m |
| 2026-06-21 | JAS21 | - | Jun 21, 14:24 UTC | Jun 21, 15:25 UTC | 1h 0m |
| 2026-06-18 | JAS21 | - | Jun 18, 17:30 UTC | Jun 18, 20:50 UTC | 3h 20m |
| 2026-06-17 | JAS21 | - | Jun 17, 20:45 UTC | Jun 17, 22:15 UTC | 1h 30m |
| 2026-06-16 | JAS21 | IAD → MDW | Jun 16, 15:24 UTC | Jun 16, 17:00 UTC | 1h 35m |
| 2026-06-14 | JAS21 | OAK → IAD | Jun 14, 16:55 UTC | Jun 14, 21:10 UTC | 4h 15m |
| 2026-06-12 | JAS21 | IAD → OAK | Jun 12, 15:00 UTC | Jun 12, 20:35 UTC | 5h 35m |
| 2026-06-03 | JAS21 | DTW → IAD | Jun 3, 18:50 UTC | Jun 3, 20:05 UTC | 1h 15m |
| 2026-06-03 | JAS21 | IAD → DTW | Jun 3, 16:50 UTC | Jun 3, 17:50 UTC | 1h 0m |
| 2026-06-02 | JAS21 | - | Jun 2, 18:35 UTC | Jun 2, 19:40 UTC | 1h 5m |
| 2026-06-02 | JAS21 | - | Jun 2, 15:05 UTC | Jun 2, 15:55 UTC | 50m |
| 2026-05-17 | JAS21 | - | May 17, 15:05 UTC | May 17, 16:05 UTC | 1h 0m |
| 2026-05-16 | JAS21 | - | May 16, 23:15 UTC | May 17, 02:30 UTC | 3h 15m |
| 2026-05-15 | JAS21 | - | May 15, 20:35 UTC | May 15, 23:30 UTC | 2h 55m |
| 2026-05-15 | JAS21 | - | May 15, 18:20 UTC | May 15, 19:20 UTC | 1h 0m |
| 2026-05-15 | JAS21 | IAD → BED | May 15, 14:35 UTC | May 15, 15:45 UTC | 1h 9m |
| 2026-05-11 | JAS21 | IAD → IAD | May 11, 14:40 UTC | May 11, 19:50 UTC | 5h 11m |
| 2026-04-30 | JAS21 | - | Apr 30, 16:50 UTC | Apr 30, 20:25 UTC | 3h 35m |
| 2026-04-27 | JAS21 | IAD → SJU | Apr 27, 13:25 UTC | Apr 27, 16:55 UTC | 3h 30m |
| 2026-04-26 | JAS21 | - | Apr 26, 23:10 UTC | Apr 27, 01:45 UTC | 2h 35m |
| 2026-04-26 | JAS21 | - | Apr 26, 17:30 UTC | Apr 26, 22:15 UTC | 4h 45m |
| 2026-04-23 | JAS21 | - | Apr 23, 22:25 UTC | Apr 23, 22:40 UTC | 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 N1721M page for operator, model, and routing details .