If you want to add a TXT record to your domain DNS, you can use a domain registrar like GoDaddy or Network Solutions. Once you have registered your domain, you will need to contact your registrar and ask for their help.

They will provide you with the necessary details to add the TXT record.

To add a TXT record, you will need to:

1. Login to your domain registrar account.

2. Go to the DNS section of your account.

3. Click on the “TXT Record” link.

4. Enter the details of your TXT record in the appropriate fields.

5. Click on the “Submit” button.

6. Your TXT record will now be live on your domain.