IZ.NU免费域名查了下，是来自于美国的，支持解析，A记录，隐藏的URL转发，申请也比较简单，至于每个人能注册多少个就不得而知了。
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注册地址：http://www.registry.iz.nu/index.php
演示地址：http://zrblog.iz.nu
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