COMMENT
DNS: A Simple Explanation:
DNS means Domain Name System or most say Domain Name Server.
that's SAD that you don't **** understand what a DNS is, without dns you would have no internet, like the problem you have now, when you type or click a link that says "google.com" how do you thank your pc gets the page.
the internet knows google.com as an IP address not as a name,
your pc gos out and ask a DNS server for the IP address of google.com, your pc received that ip address and then gos to http://74.125.224.72/
it's best to set your own DNS on the router and/or your pc, so if your isp's DNS gos down you can still reach sites on the internet.
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did you try ading a new DNS server?
Regular Best Free Public DNS Servers
Providers
Google
8.8.8.8
8.8.4.4
OpenDNS
208.67.222.222
208.67.220.220
Level3
209.244.0.3
209.244.0.4
DNS Advantage
156.154.70.1
156.154.71.1
Verizon
4.2.2.1
4.2.2.2
SmartViper
208.76.50.50
208.76.51.51
OpenNIC
Check links left for best DNS IP close to you
http://www.opennicproject.org/nearest-servers/
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Free Public DNS Servers with Safe-Browsing Shield
Providers
Norton ConnectSafe 1
198.153.192.40
198.153.194.40
Auto blocking malware, phishing & scams web sites
Norton ConnectSafe 2
198.153.192.50
198.153.194.50
Same to 1 plus blocking pornographic web sites
Norton ConnectSafe 3
198.153.192.60
198.153.194.60 Same to 2 plus blocking non-family friendly web sites
Comodo Secure DNS
8.26.56.26
8.20.247.20
Auto blocking phishing, malware and spyware web sites
Securly
184.169.143.224
184.169.161.155
Auto blocking adult oriented pages and web sites
ScrubIT
67.138.54.100
207.225.209.66
Auto blocking pornographic and malicious web sites