Says Blizzard Authentication Code upon log in

says that when I log in.. do I use code warmane sent me or is this an effin scam?

If you use 2step auth by mail,then yeah,use it in incoming mail,it will say
Warmane <[email protected]>

Dear blabla (name of account),

We've received a request to access your Warmane account from a new location.

If you did not attempt this action, please change your password immediately.

To complete this process, enter the following code into the authorization box to begin playing:

111111

nvm delete this plz... first time in 15 yrs seeing that.

ty for response