Domain transfer
This is a procedure needed when domain management is transferred to another ISP. Owner of the Domain (exact: subdomain) or technical person responsible for Domain, needs to initiate domain transfer and new ISP must accept Domain immediately after confirmation, that Domain is ready for transfer. During this procedure, there is a period o time, when both ISP are serving the Domain. This is transit period, during which old configuration cache must expire, so that new configuration became valid. This means that some clients "see" old servers, and some of them see new servers. After this period completed, and new ISP fully serves the Domain, old ISP must be switched off. Domain transfer is completed.