Are your DNS nameservers impeding your Internet experience?
If you have problems with your Domain Name Server’s provided by your ISP, take a look at this tool, it might help you to resolve the problem.
Other DNS solutions you also can find here:
Confused Which Free Public DNS To Use, Here Is How To Benchmark The Fastest DNS Server From Your Location:
If you are looking for a professional grade hardcore DNS speed benchmarking tool, multi-platform, open-source utility namebench would be the answer, capable of utilizing your web browser history, tcpdump output, or standardized datasets to benchmark DNS server speeds namebench provide well laid-out, easy to understand individualized recommendation.
However, if you are looking for something fast and noob-friendly free windows-only utility DNS Tester gets the job done but you will need to manually evaluate and compare the results.
Another free alternative would be DNSBench for fast, easy and comprehensive DNS Benchmarking on windows.