XONEX = a generic notation for a oneworld explorer round the world fare.
The first x denotes the class of service that can be purchased, L - economy D - business A - first
The x at the end denotes the number of continents in the ticket.

Examples:
LONE3 is an economy class 3 continent oneworld explorer fare.
DONE4 is a business class 4 continent oneworld explorer fare.
AONE5 is a first class 5 continent oneworld explorer fare.

For more information see the Guide:
​​​​​​The Oneworld Explorer User Guide
and the oneworld website:
​​​​​​https://www.oneworld.com/world-travel