$ ssh whoami.filippo.io
The authenticity of host 'whoami.filippo.io (178.32.139.168)' can't be established.
RSA key fingerprint is SHA256:O6zDQjQws92wQSA41wXusKquKMuugPVM/oBZXNmfyvI.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'whoami.filippo.io,178.32.139.168' (RSA) to the list of known hosts.

    +---------------------------------------------------------------------+
    |                                                                     |
    |             _o/ Hello!                                              |
    |                                                                     |
    |                                                                     |
    |  Did you know that ssh sends all your public keys to any server     |
    |  it tries to authenticate to? You can see yours echoed below.       |
    |                                                                     |
    |  We tried to use that to find your GitHub username, but we          |
    |  couldn't :( maybe you don't even have GitHub ssh keys, do you?     |
    |                                                                     |
    |  By the way, did you know that GitHub publishes all users'          |
    |  ssh public keys and Ben (benjojo.co.uk) grabbed them all?          |
    |                                                                     |
    |  That's pretty handy at times :) But not this time :(               |
    |                                                                     |
    |                                                                     |
    |  P.S. This whole thingy is Open Source! (And written in Go!)        |
    |  https://github.com/FiloSottile/whosthere                           |
    |                                                                     |
    |  -- @FiloSottile (https://twitter.com/FiloSottile)                  |
    |                                                                     |
    +---------------------------------------------------------------------+


Connection to whoami.filippo.io closed.