I’ve gotten tired of Road Runner’s DNS redirection/hijacking service which I opt out of yet it keeps coming back. I decided to do some DNS benchmarking, comparing my assigned ISP name servers against publicly provided DNS such as Google. The results were very surprising. It turns out I have less latency and hops reaching some of the publicly available DNS servers instead of those provided by my ISP (the servers actually resolve lookups faster).
Here’s what I did:
- Download and run DNS Benchmark (Windows or Wine): http://www.grc.com/dns/benchmark.htm
- Add your ISP assigned DNS servers into the DNS benchmark tool for comparison (Windows: ipconfig /all Linux: cat /etc/resolv.conf)
- Load any additional public DNS servers into the tool: publicly provided DNS
- If public DNS is faster, configure your machine for hardcoded DNS (not to pickup from DHCP).
Coincidentally, Symantec has just released their own version of a public DNS that provides malware filtering. You can read The H article here. Symantec’s “secure” DNS servers are 220.127.116.11 and 18.104.22.168