Firefox cached DNS entries. You cant clear firefox dns cache but you can disable firefox dns cache. There are 2 ways of disable firefox dns cache.
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Flush dns to get a new name resolution. Also flush dns cache when you can’t access a newly registered domain name. You can simply flush your dns cache anytime to get new entry. So, Flush your dns cache now.
– Start -> Run -> type cmd
– in command prompt, type ipconfig /flushdns
– Done! You Window DNS cache has just been flush.
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