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Clear DNS Cache on OSX 10.8 Mountain Lion

Posted on by Posted in Apple/OSX, Helpers

How to clear the DNS cache on OSX 10.8 Mountain Lion.

In a terminal window type the following:

sudo killall -HUP mDNSResponder

Per Apple,

OS X keeps a local cache of resolved DNS queries for a time defined by the DNS server, but sometimes it may be necessary to reset the cache immediately and re-query a DNS server.

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I have been in the software industry for over 14 years in many different roles including LAMP engineer, software developer, technical trainer, and manager. I enjoy learning new things and working on strong teams. I spend my free time with my wife and my son, trying to stay dry in the pacific northwest. I spend all day with my head in the clouds (AWS usually).

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