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Google DNS vs OpenDNS vs ISP DNS

post #1 of 51
Thread Starter 
I'm sure this question gets asked quite a lot but which one do you guys prefer? Some articles on the web strongly recommend to stick with your ISP's DNS servers while others recommend switching to either Google Public DNS or OpenDNS. I have used Namebench to check which DNS servers are close to me and it tells me that if I switch to OpenDNS, my internet speed will improve by 9.8%. I have also seen a ton of articles that say that Google Public DNS servers and OpenDNS servers constantly go down and it's just better to stick with your ISP's DNS.
post #2 of 51
I have never had any problems with Google DNS.
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post #3 of 51
Thread Starter 
Quote:
Originally Posted by xNovax View Post

I have never had any problems with Google DNS.

When you switched to Google DNS, did it feel faster than your ISP'S DNS?
post #4 of 51
I switched off of 75.75.75.75 and 75.75.76.76 (Comcast DNS) after they got poisoned and corrupted for the third time in a month.

Typing www.overclock.net dropped me on a REALLY sketchy site that was most definitely not OCN. Switching over to Level3's public DNS (4.2.2.2) solved the problem instantly.

Comcast DNS sucks.

EDIT: Level3 owns the following and operates them as public DNS:

4.2.2.1
4.2.2.2
4.2.2.3
4.2.2.4
4.2.2.5
4.2.2.6
209.244.0.3
209.244.0.4
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post #5 of 51
I'd stay away from ISP DNS if at all possible. They generally don't provide the box with enough resources to be either available or reliable.
Quote:
Originally Posted by Capt View Post

it tells me that if I switch to OpenDNS, my internet speed will improve by 9.8%.

This is a misconception. DNS entries will receive a reply ~9.8% faster, but you won't get any additional bandwidth.
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post #6 of 51
I get geographically closer IP addresses (which is what you want) when I use my ISP DNS (but I use their business DNS, not the consumer one, the consumer one does not handle NXDOMAIN properly). They are also much quicker than OpenDNS and Google's DNS. But I run local DNS servers and use ISP as forwarders.
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post #7 of 51
Quote:
Originally Posted by beers View Post

This is a misconception. DNS entries will receive a reply ~9.8% faster, but you won't get any additional bandwidth.
This DNS lookup also generally only occurs when you first visit a site... the additional lookups are against a local cache.
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post #8 of 51
Thread Starter 
Switched to Google Public DNS servers and my internet speed dropped quite a bit. Going back to my ISP's DNS for now since it seems to provide the fastest downloading speed.
post #9 of 51
Quote:
Originally Posted by Capt View Post

Switched to Google Public DNS servers and my internet speed dropped quite a bit. Going back to my ISP's DNS for now since it seems to provide the fastest downloading speed.

If you're seeing less bandwidth I'd wager its because you're getting IP addresses not geographically close to you from Google's public DNS.
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post #10 of 51
Thread Starter 
Quote:
Originally Posted by tompsonn View Post

If you're seeing less bandwidth I'd wager its because you're getting IP addresses not geographically close to you from Google's public DNS.

I know but what can you do? Should I use something else besides 8.8.8.8 and 8.8.4.4?
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