I'm transferring a website to a new server and have found a file named "y_key_123456.html" in the website's root directory.
I also see a file named "google123456.html" in the root too.
I'm near positive the later is for google site verification.
I'm assuming the y_key if for Yahoo site verification but don't know, and don't know if it is still needed.
Additionally, is there yet a separate verification file needed for Bing?
Are there any other organizations the site should be "verified" with?