To start, figure out what service is managing your DNS records, so you know exactly where to login and create the new records.
If you already know your DNS provider, you can move on to the next section.
Often, it’s the same place you registered your domain, but sometimes the DNS provider is different from your domain registrar.
If you’re not certain who your DNS provider is, try looking up your domain’s nameservers, replacing stripe.com with your own domain in this command:
nslookup -querytype=NS stripe.com
You’ll see a list of nameservers for your domain in the output. Here’s some example output for stripe.com:
# Looks like AWS is providing our DNS here:
stripe.com nameserver = ns-423.awsdns-52.com.
stripe.com nameserver = ns-705.awsdns-24.net.
stripe.com nameserver = ns-1087.awsdns-07.org.
stripe.com nameserver = ns-1882.awsdns-43.co.uk.
If you’re more comfortable using a browser-based tool, go to MXLookup’s DNS Lookup tool and enter your domain. It might be able to tell you who your DNS provider is (but not always).