cURL error 6: Could not resolve host

Hey! I have a weird issue that popped up. So we are migrating a site from one to another with a new domain. They are both on the same server (so I know it’s not a curl installation issue and it’s enabled). I can’t get any of the previously working crons from the old site to fire off on the new site. I’m getting a cURL error 6: Could not resolve host: <the new domain>.. I did update to WordPress 5.5. We do have the new URL on locked so only people within our IP can access it. So the domain isn’t full setup properly on GoDaddy’s side. Is that something that would cause that error? I’m seeing a bunch of random reasons across Google. I know curl isn’t one of them. My local setup is just fine too. That error scared me so I just wanted to make sure it was a domain issue. ??

Thanks for any insight!!