There are two public DNS service providers that play major role on the market plus Cloudflare that started it 184.108.40.206. service July 2009 and have one free plan anyway Cloudflare focuses commercial service and it could be high. Google public DNS and Open DNS are free, very reliable and fast. Google launched its domain name service on 3 December 2009, Open DNS on 1 November 2005 and is one of the oldest. The first one was DYN by Oracle. To make decision which fit your needs best check their number of supported records, the number of queries per second, where servers are physically located. Yes, today the distance even for electronic data transition still matter. Means the best provider might be the one that is simply closes to you. Open DNS is free for basic needs and has premium service. On August 27, 2015 OpenDNS was purchased by CISCO for US$635 million. Big player over there.