Verify your domain for your Google service
You verify your domain through your domain host (typically where you purchased your domain name).
Your domain host maintains settings called DNS records that direct internet traffic to your domain name.
Google gives you a TXT verification record to add to your domain host’s DNS records.
When Google sees the record exists, your domain ownership is confirmed.
💡 The verification record does not affect your website or email.
Add a TXT verification record (any domain host)
Note: The administrator that gets the verification record needs to complete the verification process. The verification records are unique to each administrator, so one administrator cannot finish a domain verification that was started by another.
Step 1: Get your unique verification record
Step 1.1: Sign in to your Google Admin console.
Step 1.2: At the top of the Admin console Home page, click Click here to continue setting up the Admin Console.
Step 1.3: Click Verify.
Step 1.4: Click Continue to verify your domain with a TXT record. You can also click Switch verification method if you need to use another method.
Step 1.5: Click Copy to copy your unique verification record.A red circle highlights the Copy button next to the TXT verification record.
Step 2: Go to your domain’s DNS records
Step 2.1: In a second browser window or tab, sign in to your domain host account. For details, see Identify your domain host.
Step 2.2: Go to your domain’s DNS records. The page might be called something like DNS Management, Name Server Management, Control Panel, or Advanced Settings.
Step 2.3: Select the option to add a new record.
Step 3: Add the verification record to your domain host
Step 3.1: For the record type, select TXT.
Step 3.2: In the Name/Host/Alias field, enter @ or leave it blank.
Step 3.3: 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.
Step 3.4: In the Time to Live (TTL) field, enter 86400 or leave the default.
Step 3.5: In the Value/Answer/Destination field, paste the verification record you copied in step 1.
Step 3.6: 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.
Step 4: Tell Google to verify
Step 4.1: Return to the Admin console. If necessary, click the link at the top of the page to continue setting up the Admin console.
Step 4.2: Navigate to the Verify your domain page.
Step 4.3: Scroll to the bottom of the page and click Verify my domain.
That’s it. If everything goes well, you will see a confirmation message from Google that your property is verified.
Credit: Google Docs