Reset the DNS cache in OS X - Apple SupportThis article has been archived and is no longer updated by Apple. Reset the DNS cache in OS X Learn how to reset (flush) the DNS cache. About the DNS cache OS X keeps a local cache of resolved DNS queries for a time defined by the DNS server. Sometimes it might be necessary to reset the cache immediately and re-query a DNS server. For example, you might need to do this if you are a network or serv
