This is neat. It has other handy features too. From its description:

• Site safety and malware checks
• Finding similar sites and reviews
• Automatic translation to your language
• Diagnostics like pings and traceroutes
• Whois and DNS information
• Page code validation
• Quick URL shortening

Also, an important distinction: It shows the country where the server is located rather than what the nationality of the domain name is.

A link to FlagFox.