Hello my netlify site name is stoic-einstein-1c1ca4.netlify.app,
I’ve just added a new site branch business-stoic-einstein-1c1ca4.netlify.app and connected that with an external DNS to the subdomain business.viblio.com, I need the extension of the SSL certificate to this subdomain.
Thanks in advance,
Thanks for reaching out and welcome to the Netlify Support Forums!
Visiting the site, I see you have a DNS Zone configured for
viblio.com, however, it is inactive:
dig viblio.com NS +trace | tail -n 6
;; Received 732 bytes from 18.104.22.168#53(j.gtld-servers.net) in 14 ms
viblio.com. 1800 IN NS dns1.registrar-servers.com.
viblio.com. 1800 IN NS dns2.registrar-servers.com.
;; Received 95 bytes from 2610:a1:1025::200#53(dns2.registrar-servers.com) in 33 ms
We have a Support Guide on how to detect and fix a inactive DNS Zone here:
Last reviewed by Netlify Support: April 2022
What is an “inactive Netlify DNS zone”?
First, it would help to define the term “DNS zone”. Quoting wikipedia, it says:
A DNS zone is any distinct, contiguous portion of the domain name space in the Domain Name System (DNS) for which administrative responsibility has been delegated to a single manager.
To paraphrase, a DNS zone is a collection of all the DNS records for a production domain. When you add production domains to Netlify DNS we cre…
I do see that you have
viblio.com and www.viblio.com configured for External DNS, so you can remove the inactive DNS Zone by following the solution here.
Please let us know when you’ve removed the inactive DNS zone and double-checked the Support Guide for
configuring branch subdomains without Netlify DNS.
Ok ,I’ve removed the inactive DNS Zone from the control panel ,
I’ve also checked that the subdomains DNS working properly
business.viblio.com canonical name = business--stoic-einstein-1c1ca4.netlify.app.
So I guess that if I’ve made everything correct now you should enable SSL.
You’ll need to configure the branch under
www.viblio.com since www.viblio.com is the primary domain on the site.
As mentioned here:
[Support Guide] How to use Netlify’s branch deploy feature without Netlify DNS
There are two important considerations:
the subdomain must match the branch name (“
slugified ” as needed) the subdomain will be under the
primary custom domain
This second point means that if your primary custom domain is
www.example.com then the subdomain will be
Here is an example scenario:
the custom domain is
the branch name is
the branch should be served at
the TTL value (time to live value - more below) will be 3600 seconds which is one hour
the sub-domain at Netlify is
happy-scientist-123456 (meaning the Netlify URL for the master branch is
With the values above defined for this example, the DNS record you create would look like so:
branch-name.www 3600 IN CNAME branch-name--happy-scientist-123456.netlify.app.
The format above is required and
no other naming conventions will work. The key points for the DNS record are:
There should be two dashes between
The record should be the type
The branch name must match the sub-domain you want
exactly. If your branch is called
staging your sub-domain cannot be
stage.www.example.com. It must be
Could you make this correction and let us know when it’s done?
business.www.viblio.com canonical name = business--stoic-einstein-1c1ca4.netlify.app.
let me know if it’s ok now
Let me know if everything it’s ok
You’re all set! The subdomain
business.www.viblio.com has been added to your site’s SSL certificate. It’s been tested and is loading successfully & securely in my browser.
Hope this helps!
yes thanks, everything alright now