TTSSH known_hosts file

The synopsis of 'known_hosts' file is as follows:

  SYNOPSIS:
    hostname key-type host-public-key
    
    #  comment
    !  negate

   EXAMPLE:
    192.168.1.2 ssh-rsa AAAAB3NzaC1...nXIDE=
    192.168.1.2 ssh-dss AAAAB3NzaC1...nXIDE=
    192.168.1.2 1024 35 13032138...794461 
    #192.168.1.3 ssh-rsa AAAAB3NzaC1...nXIDE=
    192.168.1.2 1024 35 13032138...794461 
    *.example.com,!mail.example.com ssh-rsa AAAAB3NzaC1...nXIDE=