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When URLs are just not resolving the way you want it, to time to clear or flush the dns nameserver local cache –flush-the-loacl-cache

How to clear the local DNS cache….

OSX 10.10

sudo discoveryutil udnsflushcaches

OSX 10.9

dscacheutil -flushcache; sudo killall -HUP mDNSResponder

OSX 10.7  – 10.8

sudo killall -HUP mDNSResponder

OSX 10.5 – 10.6

sudo dscacheutil -flushcache


ipconfig /flushdns

Linux (depending on what you’re running)

/etc/init.d/named restart
/etc/init.d/nscd restart