What is www.msftncsi.com?
The URL www.msftncsi.com is generally used by Windows machines to verity that there is network connectivity. Generally a Windows machine will try to get a file from a web server and if successful it determines there is network connectivity. For example:
- http://www.msftncsi.com/ncsi.txt is used to verify IPV4 connectivity and DNS resolution
- http://ipv6.msftncsi.com/ncsi.txt is used to verify IPV6 connectivity and DNS resolution
Besides that there are some IP addresses it uses to try to verify connectivity without using DNS resolution. Below are a few: