<?php
plugin_add_hook('PRE_REGISTER', 'plugin_canada');
function plugin_canada($uent) {
	if (file_get_contents('http://ipinfo.io/'. get_ip() .'/country') !== 'CA') {
		die('<h2>Sorry, we only allow registratiosns from users in Canada!</h2>');
	}
	return $uent;
}