sensors Mode-S transponder
7817FB
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-20DT · BOEING 787-9 Dreamliner
- Hex
- 7817FB
- Octal
- 36013773
- Decimal
- 7,870,459
- Country
- CN
- Tail
- B-20DT
- Type
- B789
- Flights observed
- 224
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 14:05 UTC
Last known position
Country allocation
The ICAO 24-bit address 7817FB falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 |
|---|---|---|---|
| DKH1607 | - | 20 | 2026-07-16 |
| DKH1662 | Juneyao Airlines | 16 | 2026-07-22 |
| DKH1661 | Juneyao Airlines | 16 | 2026-07-21 |
| DKH1658 | Juneyao Airlines | 16 | 2026-07-26 |
| DKH1667 | - | 11 | 2026-07-13 |
| DKH1657 | Juneyao Airlines | 11 | 2026-07-26 |
| DKH1602 | - | 10 | 2026-06-25 |
| DKH1601 | - | 10 | 2026-06-25 |
| DKH1789 | Juneyao Airlines | 9 | 2026-07-24 |
| DKH1883 | Juneyao Airlines | 8 | 2026-07-24 |
| DKH1790 | Juneyao Airlines | 8 | 2026-07-24 |
| DKH1608 | Juneyao Airlines | 8 | 2026-07-17 |
| DKH1885 | Juneyao Airlines | 6 | 2026-06-01 |
| DKH1882 | - | 6 | 2026-06-30 |
| DKH1670 | - | 6 | 2026-07-11 |
| DKH1669 | - | 6 | 2026-07-10 |
| DKH1668 | - | 6 | 2026-07-13 |
| DKH1385 | - | 6 | 2026-07-16 |
| DKH1886 | Juneyao Airlines | 5 | 2026-05-28 |
| DKH1884 | Juneyao Airlines | 5 | 2026-07-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | DKH1658 | ATH → PVG | Jul 26, 11:50 UTC | Jul 26, 14:05 UTC | 2h 15m |
| 2026-07-26 | DKH1657 | PVG → ATH | Jul 26, 01:20 UTC | Jul 26, 04:15 UTC | 2h 55m |
| 2026-07-24 | DKH1790 | XMN → NKG | Jul 24, 15:15 UTC | Jul 24, 15:25 UTC | 10m |
| 2026-07-24 | DKH1789 | NKG → XMN | Jul 24, 10:55 UTC | Jul 24, 11:15 UTC | 20m |
| 2026-07-24 | DKH1884 | SZX → SHA | Jul 24, 05:45 UTC | Jul 24, 05:55 UTC | 10m |
| 2026-07-24 | DKH1883 | SHA → SZX | Jul 24, 03:10 UTC | Jul 24, 04:15 UTC | 1h 5m |
| 2026-07-23 | DKH1790 | XMN → NKG | Jul 23, 13:05 UTC | Jul 23, 13:15 UTC | 10m |
| 2026-07-23 | DKH1789 | NKG → XMN | Jul 23, 10:25 UTC | Jul 23, 11:30 UTC | 1h 5m |
| 2026-07-22 | DKH1662 | MAN → PVG | Jul 22, 11:10 UTC | Jul 22, 17:00 UTC | 5h 50m |
| 2026-07-21 | DKH1661 | PVG → MAN | Jul 21, 20:55 UTC | Jul 22, 05:25 UTC | 8h 30m |
| 2026-07-20 | DKH1390 | NGO → PVG | Jul 20, 12:00 UTC | Jul 20, 13:00 UTC | 1h 0m |
| 2026-07-20 | DKH1506 | KIX → PVG | Jul 20, 04:15 UTC | Jul 20, 09:45 UTC | 5h 30m |
| 2026-07-19 | DKH1658 | ATH → KIX | Jul 19, 12:25 UTC | Jul 20, 02:35 UTC | 14h 10m |
| 2026-07-18 | DKH1657 | - | Jul 18, 13:20 UTC | Jul 19, 07:00 UTC | 17h 40m |
| 2026-07-18 | DKH1657 | - | Jul 18, 11:00 UTC | Jul 19, 07:00 UTC | 20h 0m |
| 2026-07-18 | DKH1356 | - | Jul 18, 05:30 UTC | Jul 19, 04:45 UTC | 23h 15m |
| 2026-07-18 | DKH1355 | - | Jul 18, 02:55 UTC | Jul 18, 13:35 UTC | 10h 40m |
| 2026-07-17 | DKH1608 | HEL → PVG | Jul 17, 14:10 UTC | Jul 18, 11:35 UTC | 21h 26m |
| 2026-07-16 | DKH1607 | - | Jul 16, 15:30 UTC | Jul 17, 11:04 UTC | 19h 35m |
| 2026-07-16 | DKH1385 | - | Jul 16, 04:10 UTC | Jul 16, 13:40 UTC | 9h 30m |
| 2026-07-15 | DKH1505 | - | Jul 15, 12:30 UTC | Jul 16, 02:35 UTC | 14h 5m |
| 2026-07-15 | DKH1506 | - | Jul 15, 04:20 UTC | Jul 15, 11:05 UTC | 6h 45m |
| 2026-07-15 | DKH1505 | - | Jul 15, 01:50 UTC | Jul 15, 02:50 UTC | 1h 0m |
| 2026-07-13 | DKH1668 | - | Jul 13, 20:50 UTC | Jul 14, 00:20 UTC | 3h 30m |
| 2026-07-13 | DKH1667 | - | Jul 13, 11:00 UTC | Jul 13, 17:55 UTC | 6h 55m |
| 2026-07-12 | DKH1667 | - | Jul 12, 20:50 UTC | Jul 13, 17:55 UTC | 21h 5m |
| 2026-07-12 | DKH1667 | - | Jul 12, 18:50 UTC | Jul 13, 17:55 UTC | 23h 5m |
| 2026-07-12 | DKH1667 | - | Jul 12, 16:50 UTC | Jul 13, 16:45 UTC | 23h 55m |
| 2026-07-12 | DKH1607 | - | Jul 12, 06:25 UTC | Jul 12, 13:55 UTC | 7h 30m |
| 2026-07-11 | DKH1670 | - | Jul 11, 07:35 UTC | Jul 12, 06:40 UTC | 23h 5m |
| 2026-07-10 | DKH1670 | - | Jul 10, 22:40 UTC | Jul 11, 07:50 UTC | 9h 10m |
| 2026-07-10 | DKH1669 | NRT → SYD | Jul 10, 04:50 UTC | Jul 10, 20:25 UTC | 15h 35m |
| 2026-07-09 | DKH1386 | HND → NRT | Jul 9, 15:30 UTC | Jul 10, 03:30 UTC | 12h 0m |
| 2026-07-09 | DKH1385 | - | Jul 9, 12:10 UTC | Jul 9, 13:45 UTC | 1h 35m |
| 2026-07-08 | DKH1385 | - | Jul 8, 16:50 UTC | Jul 9, 13:45 UTC | 20h 55m |
| 2026-07-08 | DKH1385 | - | Jul 8, 16:10 UTC | Jul 9, 13:45 UTC | 21h 35m |
| 2026-07-08 | DKH1662 | - | Jul 8, 12:50 UTC | Jul 9, 12:45 UTC | 23h 55m |
| 2026-07-08 | DKH1662 | - | Jul 8, 10:20 UTC | Jul 8, 16:50 UTC | 6h 30m |
| 2026-07-07 | DKH1661 | KIX → MAN | Jul 7, 14:00 UTC | Jul 8, 05:30 UTC | 15h 30m |
| 2026-07-06 | DKH1670 | SYD → KIX | Jul 6, 22:50 UTC | Jul 7, 12:40 UTC | 13h 50m |
| 2026-07-06 | DKH1669 | NRT → SYD | Jul 6, 04:35 UTC | Jul 6, 20:25 UTC | 15h 50m |
| 2026-07-05 | DKH1660 | - | Jul 5, 11:00 UTC | Jul 6, 02:55 UTC | 15h 55m |
| 2026-07-04 | DKH1659 | - | Jul 4, 10:55 UTC | Jul 5, 05:40 UTC | 18h 45m |
| 2026-07-04 | DKH1659 | - | Jul 4, 08:50 UTC | Jul 5, 05:40 UTC | 20h 50m |
| 2026-07-04 | DKH1659 | - | Jul 4, 08:40 UTC | Jul 5, 05:40 UTC | 21h 0m |
| 2026-07-04 | DKH1670 | - | Jul 4, 01:50 UTC | Jul 4, 20:30 UTC | 18h 40m |
| 2026-07-03 | DKH1669 | - | Jul 3, 04:50 UTC | Jul 3, 23:30 UTC | 18h 40m |
| 2026-07-03 | DKH1669 | NRT → SYD | Jul 3, 04:35 UTC | Jul 3, 23:30 UTC | 18h 55m |
| 2026-07-03 | DKH1379 | - | Jul 3, 01:25 UTC | Jul 3, 02:50 UTC | 1h 25m |
| 2026-07-01 | DKH1884 | - | Jul 1, 06:50 UTC | Jul 1, 07:00 UTC | 10m |
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 B-20DT page for operator, model, and routing details .