sensors Mode-S transponder
A1B2A8
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N2084J · AIRBUS A-321neo · operated by UMB BANK NA TRUSTEE
- Hex
- A1B2A8
- Octal
- 50331250
- Decimal
- 10,597,032
- Country
- US
- Tail
- N2084J
- Type
- A21N
- Flights observed
- 61
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 28d ago
Last known position
Country allocation
The ICAO 24-bit address A1B2A8 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| JBU387 | JetBlue Airways | 4 | 2026-04-17 |
| JBU1360 | JetBlue Airways | 4 | 2026-04-15 |
| JBU1359 | - | 4 | 2026-04-15 |
| JBU1328 | JetBlue Airways | 4 | 2026-04-20 |
| JBU8627 | JetBlue Airways | 3 | 2026-05-01 |
| JBU561 | JetBlue Airways | 3 | 2026-04-22 |
| JBU1584 | JetBlue Airways | 3 | 2026-05-01 |
| JBU1483 | JetBlue Airways | 3 | 2026-05-01 |
| JBU1383 | JetBlue Airways | 3 | 2026-04-20 |
| JBU1370 | JetBlue Airways | 3 | 2026-04-20 |
| JBU1124 | JetBlue Airways | 3 | 2026-04-18 |
| JBU939 | - | 2 | 2026-04-13 |
| JBU509 | JetBlue Airways | 2 | 2026-04-28 |
| JBU505 | JetBlue Airways | 2 | 2026-04-24 |
| JBU1966 | JetBlue Airways | 2 | 2026-04-13 |
| JBU1877 | JetBlue Airways | 2 | 2026-04-21 |
| JBU966 | JetBlue Airways | 1 | 2026-04-29 |
| JBU965 | JetBlue Airways | 1 | 2026-04-29 |
| JBU938 | - | 1 | 2026-04-13 |
| JBU662 | JetBlue Airways | 1 | 2026-04-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-01 | JBU8627 | ATL → MZJ | May 1, 22:10 UTC | May 1, 23:45 UTC | 1h 35m |
| 2026-05-01 | JBU8627 | ATL → MZJ | May 1, 19:05 UTC | May 1, 21:55 UTC | 2h 50m |
| 2026-05-01 | JBU8627 | ATL → MZJ | May 1, 19:00 UTC | May 1, 23:45 UTC | 4h 45m |
| 2026-05-01 | JBU1584 | MCO → JFK | May 1, 15:20 UTC | May 1, 17:20 UTC | 2h 0m |
| 2026-05-01 | JBU1483 | JFK → MCO | May 1, 11:10 UTC | May 1, 13:30 UTC | 2h 20m |
| 2026-04-29 | JBU966 | BOS → ATL | Apr 29, 21:30 UTC | Apr 30, 03:00 UTC | 5h 30m |
| 2026-04-29 | JBU965 | BOS → RSW | Apr 29, 15:00 UTC | Apr 29, 23:45 UTC | 8h 44m |
| 2026-04-28 | JBU509 | BOS → SEA | Apr 28, 14:15 UTC | Apr 28, 14:50 UTC | 35m |
| 2026-04-28 | JBU509 | BOS → SEA | Apr 28, 14:14 UTC | Apr 28, 23:40 UTC | 9h 26m |
| 2026-04-27 | JBU1483 | JFK → MCO | Apr 27, 12:43 UTC | Apr 27, 19:05 UTC | 6h 23m |
| 2026-04-27 | JBU602 | FLL → JFK | Apr 27, 01:14 UTC | Apr 27, 19:05 UTC | 17h 52m |
| 2026-04-26 | JBU1801 | JFK → NAS | Apr 26, 19:02 UTC | Apr 27, 18:00 UTC | 22h 58m |
| 2026-04-26 | JBU1584 | MCO → JFK | Apr 26, 15:15 UTC | Apr 26, 17:30 UTC | 2h 15m |
| 2026-04-26 | JBU1584 | MCO → JFK | Apr 26, 15:15 UTC | Apr 27, 14:00 UTC | 22h 45m |
| 2026-04-26 | JBU1483 | JFK → MCO | Apr 26, 11:20 UTC | Apr 26, 13:30 UTC | 2h 10m |
| 2026-04-25 | JBU528 | MCO → EWR | Apr 25, 15:30 UTC | Apr 26, 03:00 UTC | 11h 30m |
| 2026-04-25 | JBU569 | BOS → FLL | Apr 25, 10:15 UTC | Apr 25, 13:30 UTC | 3h 15m |
| 2026-04-24 | JBU1256 | GYE → FLL | Apr 24, 17:32 UTC | Apr 25, 15:55 UTC | 22h 23m |
| 2026-04-24 | JBU505 | EWR → FLL | Apr 24, 09:30 UTC | Apr 24, 13:25 UTC | 3h 55m |
| 2026-04-24 | JBU505 | EWR → FLL | Apr 24, 09:29 UTC | Apr 25, 05:20 UTC | 19h 51m |
| 2026-04-23 | JBU1255 | FLL → GYE | Apr 23, 15:13 UTC | Apr 24, 13:25 UTC | 22h 12m |
| 2026-04-23 | JBU662 | BGI → JFK | Apr 23, 03:30 UTC | Apr 23, 03:55 UTC | 25m |
| 2026-04-22 | JBU561 | BOS → SJU | Apr 22, 22:40 UTC | Apr 23, 17:05 UTC | 18h 26m |
| 2026-04-22 | JBU561 | BOS → SJU | Apr 22, 22:40 UTC | Apr 23, 02:10 UTC | 3h 30m |
| 2026-04-22 | JBU1878 | SXM → BOS | Apr 22, 16:00 UTC | Apr 22, 19:40 UTC | 3h 40m |
| 2026-04-21 | JBU561 | BOS → SJU | Apr 21, 22:35 UTC | Apr 22, 22:00 UTC | 23h 26m |
| 2026-04-21 | JBU1877 | BOS → SXM | Apr 21, 10:35 UTC | Apr 21, 14:05 UTC | 3h 30m |
| 2026-04-21 | JBU1877 | BOS → SXM | Apr 21, 10:33 UTC | Apr 22, 10:00 UTC | 23h 28m |
| 2026-04-20 | JBU1370 | MCO → RIC | Apr 20, 23:55 UTC | Apr 21, 02:40 UTC | 2h 45m |
| 2026-04-20 | JBU1383 | PWM → LGA | Apr 20, 18:15 UTC | Apr 20, 20:30 UTC | 2h 15m |
| 2026-04-20 | JBU1328 | JFK → GUA | Apr 20, 11:50 UTC | Apr 20, 16:15 UTC | 4h 25m |
| 2026-04-18 | JBU1188 | SXM → JFK | Apr 18, 14:50 UTC | Apr 19, 00:50 UTC | 10h 0m |
| 2026-04-18 | JBU1124 | LAX → JFK | Apr 18, 01:25 UTC | Apr 18, 02:50 UTC | 1h 25m |
| 2026-04-17 | JBU1124 | LAX → JFK | Apr 17, 23:25 UTC | Apr 18, 01:20 UTC | 1h 55m |
| 2026-04-17 | JBU1124 | LAX → JFK | Apr 17, 22:00 UTC | Apr 17, 23:20 UTC | 1h 20m |
| 2026-04-17 | JBU387 | BOS → SEA | Apr 17, 19:25 UTC | Apr 17, 20:20 UTC | 55m |
| 2026-04-17 | JBU387 | BOS → SEA | Apr 17, 17:25 UTC | Apr 17, 19:20 UTC | 1h 55m |
| 2026-04-17 | JBU387 | BOS → SEA | Apr 17, 15:20 UTC | Apr 17, 17:15 UTC | 1h 55m |
| 2026-04-17 | JBU387 | BOS → SEA | Apr 17, 14:19 UTC | Apr 17, 15:15 UTC | 56m |
| 2026-04-17 | JBU1370 | MCO → RIC | Apr 17, 01:20 UTC | Apr 17, 02:30 UTC | 1h 10m |
| 2026-04-16 | JBU1370 | MCO → RIC | Apr 16, 23:55 UTC | Apr 17, 01:15 UTC | 1h 20m |
| 2026-04-16 | JBU1383 | PWM → LGA | Apr 16, 19:15 UTC | Apr 16, 20:45 UTC | 1h 30m |
| 2026-04-16 | JBU1383 | PWM → LGA | Apr 16, 18:35 UTC | Apr 16, 18:50 UTC | 15m |
| 2026-04-16 | JBU1328 | JFK → GUA | Apr 16, 15:15 UTC | Apr 16, 16:10 UTC | 55m |
| 2026-04-16 | JBU1328 | JFK → GUA | Apr 16, 13:15 UTC | Apr 16, 15:10 UTC | 1h 55m |
| 2026-04-16 | JBU1328 | JFK → GUA | Apr 16, 11:54 UTC | Apr 16, 13:05 UTC | 1h 10m |
| 2026-04-15 | JBU1360 | KIN → JFK | Apr 15, 23:10 UTC | Apr 15, 23:20 UTC | 10m |
| 2026-04-15 | JBU1360 | KIN → JFK | Apr 15, 21:05 UTC | Apr 15, 23:00 UTC | 1h 55m |
| 2026-04-15 | JBU1359 | - | Apr 15, 15:05 UTC | Apr 15, 16:50 UTC | 1h 45m |
| 2026-04-15 | JBU1359 | JFK → KIN | Apr 15, 14:24 UTC | Apr 15, 14:55 UTC | 31m |
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 N2084J page for operator, model, and routing details .