When your ISP’s Domain Name System (DNS) is out of service, you may experience problems browsing the Internet. In this case, it may be a good idea to use an alternate DNS for temporarily bypassing the problem. A good choice is to use the free DNS from Google. Here is the technical information.

If you have multiple computers in your network and don’t want to change the TCP/IP settings on each computer, you can change the DSN settings on the router and restart the router. All computers will take the new settings next time they connect to the router.