Enabling SSL on Subdomains


I was following this guide that was posted by a Netlify support engineer to set up branch subdomains with an external DNS: [Common Issue] How to use Netlify’s branch deploy feature without Netlify DNS

Everything is working on my end, but the last step says that I should reach out to Netlify technical support to extend my SSL cert to my subdomains. Would this be the correct place to post about that and get it extended?


Hi Kyle,

Here’s fine. What site is it for, please? If you’d included that detail, I would have already gotten things fixed for you :slight_smile:


Sorry about that, I thought it might be linked to my community user.

The site is hula.netlify.com. The domain I use through my DNS is www.hula.com and I have just added dev.hula.com (the subdomain I wish to extend the DNS to). I may add a staging subdomain in the future, so if it’s possible to get a wildcard SSL that would be perfect!

Thank you,

@kyle, thanks! We’ve just added dev.hula.com to your SSL cert.

Wildcard certs are only available if you are using netlify to manage your DNS. So you can switch to that or just write us back when you deploy your staging branch!

Sounds good. Thank you for getting to that so quickly!

The SSL cert was working fine 3 days ago, but it looks like it may have been removed from the dev domain. When I visit dev.hula.com, it says the connection is not secure.

Do you know what could have caused this?

Sorry for the trouble.

Hmm, strange. I’ve just tested dev.hula.com in both Chrome and Firefox and I am seeing the cert in both. And I’ve confirmed your DNS is correct. Can you try a hard refresh of your browser, or try a different browser or device and let me know if the issue persists?

It is working again on my end. Not sure what could have caused that, but I did refresh and try a separate browser before posting.

Thank you.

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Hijacking this thread to ask for the same thing :slight_smile:

The site is lona-frontend.netlify.com (lona.design).
I set up dev.lona.design to point to the branch deploy.

Thank you Laura!

Hi, @mathieudutour, and welcome to our Netlify community site. :+1:

Please feel free to make new topics in the #admin category if this comes up again for faster replies.

First, I do see there is an unused Netlify DNS configuration for this domain here:


Please delete that configuration if you are not using Netlify DNS as it will only cause issues. (Note, I do not show that enabled or working at this time. I’m pretty sure it is safe to delete.) The name servers used at not the Netlify control name servers:

lona.design.		172800	IN	NS	ns-1398.awsdns-46.org.
lona.design.		172800	IN	NS	ns-1965.awsdns-53.co.uk.
lona.design.		172800	IN	NS	ns-251.awsdns-31.com.
lona.design.		172800	IN	NS	ns-869.awsdns-44.net.

For third-party DNS, the instructions are found above (and here is a link).

I do show the branch has been deployed. However, I’m not seeing a subdomain which exactly matches the branch name (which is a requirement). The subdomain is dev but the branch name is develop:

dev.lona.design.	3600	IN	CNAME	develop--lona-frontend.netlify.com.

Would you please change the subdomain to match the branch and then let us know. (Changing dev.lona.design to develop.lona.design.)We’ll be able to update the SSL certificate once this is done.

If there are questions, please let us know.

Thanks @luke! It should be all good now

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Hi, @mathieudutour, that SSL certificate has been extended to include develop.lona.design and that domain name does correctly direct the the branch deploy at Netlify.

If there are other questions or concerns, please let us know.