china_ipv4:<iframe src="//v4.liushengzhong.com/" rel="nofollow" width="100%" height="30" frameborder="0" scrolling="no"></iframe>
usa:ipv4:<iframe src="//g.lsz.me/ip.php" rel="nofollow" width="100%" height="30" frameborder="0" scrolling="no"></iframe>
ipv6:<iframe src="//v6.liushengzhong.com/" rel="nofollow" width="100%" height="30" frameborder="0" scrolling="no"></iframe>