Inventory the current setup
- Record nameservers and export or screenshot all DNS records.
- Identify website hosting, email provider, verification records, subdomains, and third-party tools.
- Confirm which account actually controls authoritative DNS.
Plan the specific change
- Follow the destination provider’s exact host, type, and value.
- Lower TTL in advance only when you understand the timing.
- Avoid deleting old records until the replacement is verified and conflicts are understood.
Test after the change
- Check the main website and important subdomains.
- Send and receive email from outside the organization.
- Test forms, authentication links, and services that rely on TXT or CNAME records.
Stop guessing when the problem keeps coming back
Get DNS help before replacing nameservers, migrating email, or making changes during a critical business period.