For my domain (https://www.poof.io), it's www. If you just use something like https://poof.io, then it would be @. Depends on your site. There should be a few historical IP addresses, but you would create an A record…
Used this site https://www.whatsmydns.net, and it worked. Unfortunately the Heroku issue lost us a few thousand $ alongside a few customers.
For my domain (https://www.poof.io), it's www. If you just use something like https://poof.io, then it would be @. Depends on your site. There should be a few historical IP addresses, but you would create an A record…
Used this site https://www.whatsmydns.net, and it worked. Unfortunately the Heroku issue lost us a few thousand $ alongside a few customers.