Mirek SP5XI/VK6DXI was active as 7X0DX many times. Operation on bands was possible only in his free time as it were business trips. The QTH was Bechar (loc. IM81VO).
The complete log of 7X0DX is uploaded to the CLubLog service: https://secure.clublog.org/logsearch/7X0DX (OQRS is enabled for bureau and direct requests).
First operations of 7X0DX were managed by Ted DL4DBR and perhaps you can still find such outdated QSL info in some sources. DL4DBR is Silent Key. Tom SP5UAF took over the QSL management of 7X0DX and has complete logs.
The 7X0DX license is still valid and is regularly renewed.