I can configure a custom domain for either frontend or backend, but not both

I use my custom domain name for the backend. In Google domains I had created an A record:

Note: using “xxx” to overcome 6 links max requirement.

Host Name: strapi.hoofs-and-horns.com
Type: A

On my EC2 instance I used NGINX to configure it and to use letsencrypt certificates. This works great and I can issue API requests such as:

My frontend obviously needs access to the backend APIs. I added following environment variable:
GATSBY_STRAPI_API_URL ==> https://strapi.hoofs-and-horns.com/api

To access Netlify frontend I had created a CNAME record in Google domains:
Host Name: www.hoofs-and-horns.com
Data: bejewelled-naiad-656cfc.netlify.app

Where “bejewelled-naiad-656cfc.netlify.app” is the site name of the Netlify frontend.

In Netlify Domain Management I see a warning - “Awaiting External DNS”.
When I click on it it displays following information:
Log in to the account you have with your domain provider,
and make sure the name servers for hoofs-and-horns.com are
set to the following hostnames:

In Google DNS settings, Name servers are set to:

I can switch to “Custom name servers” to specify Netlify domains but then my access to the backend will be lost since either “Default name servers” or “Custom name servers” may be enabled, but not both.

In seems logical to me for two record types to be able to use different doomain name servers but this is not how it is set up with Google Domains.
I tried adding “Google DNS settings” name servers to “Custom name servers”

But that has not worked either.

Hi @nickguner,

Thanks for reaching out and welcome to Netlify’s Support Forums!

Reviewing the site, I’m showing you have Netlify DNS setup and you’re using Netlify’s name servers at your registrar:

host -t ns hoofs-n-horns.com
hoofs-n-horns.com name server dns3.p01.nsone.net.
hoofs-n-horns.com name server dns2.p01.nsone.net.
hoofs-n-horns.com name server dns4.p01.nsone.net.
hoofs-n-horns.com name server dns1.p01.nsone.net.

If you instead want to configure External DNS, you can follow option 1 of our Support Guide:

You would configure an A Record for hoofs-n-horns.com that points to

For www.hoofs-and-horns.com you would configure a CNAME Record that points to bejewelled-naiad-656cfc.netlify.app which you mentioned in your post.

You should only configure either External DNS or Netlify DNS. If you’re using External DNS, you will want to remove Netlify DNS and use the registrar name servers instead of Netlify’s name servers.

Let us know if you have any questions.