Verify your domain by DNS

Verify your domain with a DNS TXT record

Add a TXT verification record (any domain host)

1. For the record type, select TXT.
2. In the Name/Host/Alias field, enter @ or leave it blank.
   Your host might require you to enter your domain, which looks like yourdomain.com, into this field. Your other DNS records might indicate what you should enter.
3. In the Time to Live (TTL) field, enter 86400 or leave the default.
4. In the Value/Answer/Destination field, paste the verification record you copied in step 1.
5. Save the record.

Note: If you see a warning message about changing your DNS settings, disregard it. Adding the TXT record won’t damage your website or DNS settings.

Big thanks to = https://support.google.com/a/answer/183895?hl=en