How to maintain version control of DNS settings?

Your team makes DNS changes, something breaks, and nobody remembers what was modified. Sound familiar? Version control solves this, but it looks different in DNS than it does in code.

The simple approach: documentation: Keep a spreadsheet or shared document listing all your DNS records. Include date stamps whenever you make changes. It's low-tech, but it works for small setups and gives you a record of what changed when. The downside is it's manual and easy to forget.

The infrastructure-as-code approach: If you're comfortable with tools like Terraform, Pulumi, or CloudFormation, you can define all your DNS records in code, store it in Git, and treat DNS changes like code changes. Every modification requires a Git commit with a message explaining why. You get full audit trails and the ability to roll back to any previous state. This is overkill for a tiny domain, but it's the best practice for teams managing multiple domains or critical infrastructure.

The middle ground: regular exports: Some DNS providers let you export your entire zone file. Save those exports to version control (Git works great) with dated filenames. You can see exactly what changed between exports and restore an old configuration if something goes sideways. This takes less setup than infrastructure-as-code but gives you most of the benefits.

What your DNS provider can offer: Check if your provider has built-in audit logs or version history. Some cloud DNS services track changes automatically, which means you might not need to set up anything extra. Look for audit trails that show who changed what and when.

What to do next: For a solo domain, pick documentation or exports. For a team managing multiple domains, infrastructure-as-code is worth the initial investment. Set up whichever approach fits your team size and risk tolerance, then test a rollback scenario to make sure it actually works before you need it in an emergency. Before you start tracking changes, make sure you understand your DNS TTL values and how they affect how quickly changes propagate. For a full picture, check how SPF records interact with your version history.