Domain name query method, system and device, communication equipment and storage medium

The invention relates to a domain name query method, system and device, communication equipment, a storage medium and a computer program product. The method is applied to a local domain name system, and comprises the following steps: receiving a domain name query of a first server for a protected domain name, and initiating a first recursive query to a second server; under the condition that the first recursive query fails, based on a pre-established binding relationship between the protected domain name and the security domain name, initiating a second recursive query to a third server, and taking a result obtained by the second recursive query as a query result of the protected domain name; wherein the security domain name is a controllable domain name, and the level of the security domain name is higher than that of the protected domain name; wherein the second server and the third server are both deployed in a controllable network. In this way, the automatic switching query mode of domain name query is ac