DNS汇总
国外
Norton Connectsafe DNS for Home
A-Security (malware, phishing sites and scam sites)
Preferred DNS: 199.85.126.10 Alternate DNS: 199.85.127.10
B-Security + Pornography
Preferred DNS: 199.85.126.20 Alternate DNS: 199.85.127.20
C-Security + Pornography + Other
Preferred DNS: 199.85.126.30 Alternate DNS: 199.85.127.30
参考网站：https://dns.norton.com/configureRouter.html
Comodo Secure DNS server
Preferred DNS: 8.26.56.26 Alternate DNS: 8.20.247.20
参考网站：http://securedns.dnsbycomodo.com/support/router/
Google Public DNS
IPv4
Preferred DNS: 8.8.8.8 Alternate DNS: 8.8.4.4
IPV6
Preferred DNS: 2001:4860:4860::8888 Alternate DNS: 2001:4860:4860::8844
参考网站：https://developers.google.com/speed/public-dns/docs/using
Open DNS for Home user
Preferred DNS: 208.67.222.222 Alternate DNS: 208.67.220.220
参考网站：https://store.opendns.com/setup/#/?new=home-free (需注册)
国内
114DNS
A-纯净无劫持
Preferred DNS: 114.114.114.114 Alternate DNS: 114.114.115.115
B-拦截钓鱼病毒木马网站
Preferred DNS: 114.114.114.119 Alternate DNS: 114.114.115.119
C-学校或家长可选拦截 色情网站
Preferred DNS: 114.114.114.110 Alternate DNS: 114.114.115.110
参考网站：http://www.114dns.com/
百度DNS
Preferred DNS: 180.76.76.76 Alternate DNS: 114.114.114.114
参考网站：http://dudns.baidu.com/
阿里DNS
Preferred DNS: 223.5.5.5 Alternate DNS: 223.6.6.6
参考网站：http://www.alidns.com/
总结：
国外DNS解析国内网站速度慢，一般要通过CDN，但是使用国内DNS，你懂得～～～
更改DNS后，Windows下 打开cmd命令输入：
ipconfig/flushdns
刷新DNS缓存