var ip = '3.138.102.178';
var dns = '74.125.40.74';
var ip_province = '俄亥俄州';
var ip_city = '都柏林';
var ip_isp = '';
var dns_province = '北卡罗来纳州';
var dns_city = '勒诺';
var dns_isp = '';
var res = 'error';
var msg = '您的DNS设置可能存在问题，请联系您的ISP服务商';