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You can configure the DNS at your registrar by following our Support Guide here:
It’s important to note that you’ll want to either configure Netlify DNS, or External DNS and not both. For External DNS, you’ll create an A Record for stumpcalculator.com and point to 75.2.60.5. For www.stumpcalculator.com you’ll create an CNAME Record that points to basicstumpcalculator.netlify.app.
If you decide instead to use Netlify DNS, at your registrar, you would change the name servers to Netlify’s name servers. You can follow this video guide to assist.
If you’re unsure whether to use Netlify DNS or External DNS, we have a Support Guide to assist here: