From HEXONET Wiki
The RestoreDomain command automatically informs the respective registrar to perform a domain restore.
The restore cannot be performed in real-time. The processing depends on the respective TLD / registry and varies from 1-3 working days. Please notice that you can not restore domains under all TLDs. For further information please see the corresponding TLD info page.
COMMAND
(required) command = RestoreDomain domain = (DOMAIN)
RESPONSE
(required) code = (CODE) description = (DESCRIPTION)