Recently I was making some modifications to my website, in fact, I moved the whole site from a windows server to a linux one.
After almost 24h (and once OpenDNS online servers got updated), I was still browsing the old one, so I discovered the problem was lying inside my client's DNS cache. I found many suggestions, but the bullet proof™ ones (at least for me!) are the following:
how to clean windows dns cache:
how to clean ubuntu dns server, dns cache:
how to clean MAC OS X dns cache:
sudo dscacheutil -flushcache
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