.MSN File Extension
File TypeHost Blocking File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a MSN file?
Contains a list of blocked Internet hosts, often identified by IP addresses; prevents certain websites and other Internet locations from being accessed.
The default host blocking file is typically named "hosts.msn" and is located in the "C:\WINDOWS\system32\drivers\etc" directory.