alternative DNS

DNS.WATCH
82.200.69.80 and 84.200.70.40

opendns
208.67.222.222 and 208.67.220.220

google dns
8.8.8.8 and 8.8.4.4

isp dns
204.225.127.10

level 3 dns
209.244.0.3, 209.244.0.4, 4.2.2.1, 4.2.2.2, 4.2.2.3 and 4.2.2.4

Comodo Secure DNS
8.26.56.26 and 8.20.247.20