To display up-to-date information about website physical location and IP Whois / DNS information of a web server, the Myip.MS Flag Add-on uses API, it sends the requested domain names to plugin.myip.ms. The format of API is /hostname.
Any other information about the site or user will not be sent to plugin.myip.ms, except for its domain name. Myip.MS Flag Addon do not collect any personal information about visitors and use basic Google Analytics for the purposes of statistics.