Flushdns

To flush DNS cache in Microsoft Windows

# ipconfig /flushdns

To flush the DNS cache in Linux/unuix, restart the nscd daemon:

# /etc/rc.d/init.d/nscd restart

To flush the DNS cache in Mac OS X Leopard:

# lookupd -flushcache

To flush the DNS cache in Mac OS X:

# dscacheutil -flushcache