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htaccess block all countries but the US

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Last Modified: 2017-04-19
Is there a good and programmatic way, possibly with my htaccess or a wordpress plugin to only allow US based traffic see my site, blocking all countries but the US?
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Senior Platform Engineer
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Commented:
I agree with Phil about MaxMind.

I wrote an article on this years ago.  It wasn't about blocking, but it shows some of the PHP way of approaching the issue.  Probably can generalize this into something for .htaccess if you would prefer that approach.
https://www.experts-exchange.com/articles/3437/IP-Address-to-Country-in-PHP.html
Dr. KlahnPrincipal Software Engineer
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Commented:
I find geolocation to be correct about 3/4 of the time ... which is somewhat better than flipping a coin.  With the shortage of IPv4 blocks becoming more pressing, IP blocks supposedly assigned to the US are being used by non-US companies, and vice versa.  Further, when a connection comes in on Tor or over a VPN, there's no telling where the actual origin of the connection is located.

Stronger blocking is more effective but there's a cost associated with a lost sale or lost exposure to a potential customer.  At some point you have to throw up your hands and say "From this point forward, we just have to tolerate it as best we can."

If you're seeing trouble emanating from non-US IP blocks, it may be of interest to mention that using iptables to stop connections from all ex-USSR and APNIC blocks (except AU and NZ) cut a number of "issues" down substantially on our server.
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