Just an FYI, I use openDNS.
I find thier servers faster then my ISPs. Redundant, they have just 2
published IP's but they actually have 3 servers in each of 5 data
centers that I know about ( London UK, Seattle, Palto Alto, NYC and
Virginia ). Thier DNS servers respect the TLS on records, not like alot
of ISP's who hard code 24 or 48 hours ( I know of a bunch that do this,
like Rogers here in Canada ).
They also do some pretty cool stuff, like block phishing sites ( they
own PhishTank ) and if you mistype an URL the servers will respond with
a search page. And if your admining a large LAN you can also do domain
blocking, XXX blocking and webproxy blocking.
The DNS server IPs are 18.104.22.168 & 22.214.171.124
Take a look at: www.openDNS.com
I've used them since they started and have been extremely happy with
them, every network I admin uses them now. They did have one outage
over a year ago ( lasted about 2 hours), but that was due to a bot net
DOS attack . They pissed them off since thier phishing sites were
getting blocked. But they were on it fast and got it resolved as
quickly as possible.