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CDN Resource Domains

Content can be distributed via the default domain and a custom domain.

Default domain

A default domain of the form *.selcdn.net is automatically generated when creating a CDN resource. Example of a default domain: a051e1d7-9f5d-4325-a2d3-947e4cd635a3.selcdn.net.

A Let`s Encrypt® certificate is automatically issued for the default domain. Content is distributed over HTTPS.

You can view the default domain in the control panel: in the top menu, click Products → CDN → CDN resources → CDN resource page → General tab.

We recommend adding a custom domain to the CDN resource — using third-party domains may hinder website promotion and affect search engine rankings.

Custom domain

Content can be distributed under your own (custom) domain. In this case, requests will be redirected to the default domain via a CNAME record.

Only a third-level subdomain of the main domain can be used as a custom domain, for example, cdn.example.com for example.com. You cannot use the main domain as a custom domain.

For a custom domain, you need to issue a Let’s Encrypt® certificate or upload a custom certificate.

You can add a custom domain by following the instructions in Add a custom domain to a CDN resource.