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Introduction to Clearing the DNS Cache
The DNS cache is a performance-enhancing feature used by Internet browsers, computers and DNS servers to store the results of recent DNS queries in order to increase the speed of future DNS queries. This is mostly good, except when you make changes to OpenDNS Web content filtering settings. The DNS cache may return results that fall into a category you specified to be filtered, which creates a temporary appearance that OpenDNS is not working properly.
Therefore, it is recommended that you always clear the DNS cache of Internet browsers, computers and servers after setting or adjusting OpenDNS Web content filtering settings.
The following sections describe how to clear DNS cache on browsers, computers and DNS servers.