Google this week introduced Google Public DNS, a public Domain Name Service (DNS) resolver that allows users to turn to Google rather than their ISP to take them to the Web sites they’re seeking.

“DNS is the Internet’s equivalent of a phone directory,” writes InformationWeek’s Thomas Claburn. “It takes domain names, like example.com, and translates them into associated numerical IP addresses (192.0.32.10, in the case of example.com) to connect the client’s Web browser to the Web server at that address.”

“Google Public DNS aims to provide improved security (in the form of resistance of cache poisoning attacks but not content blocking or filtering), better performance, and ‘more valid results,’ a reference to ISPs that filter content or use NXDOMAIN redirection to monetize mistyped domain names,” Claburn writes.

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