Delegate a zone (domain)

A domain zone is a collection of a domain's resource records. A domain zone propagates from special servers in the DNS system — NS servers, which are specified in the domain's NS records.

When registering a domain, the registrar's NS servers are specified for it. To manage a domain zone through DNS hosting, you need to delegate the domain — specify the hosting's NS servers at the registrar.

If you delegate the primary domain to Servercore, all its subdomains will be delegated to Servercore by default.

You can manage the primary domain zone and subdomain zones via different hostings, for example:

delegate the primary domain to a third-party hosting, and the subdomain to Servercore;
delegate the primary domain to Servercore, and the subdomain to a third-party hosting.

Delegate the primary domain and subdomains to Servercore

In the Control panel, on the top menu, click Products and select DNS hosting.
Make sure you have created a zone for the primary domain and added resource records to it.
To add resource records for a subdomain, create a zone for the subdomain and add resource records to it. The primary domain zone and the subdomain zone must be created in the same project. After creation, you will be able to transfer the subdomain zone to another project.
Go to the control panel of the domain registrar where your primary domain is registered.
In the NS records, replace the values with Servercore's NS servers: a.ns.srv.cr, b.ns.srv.cr, c.ns.srv.cr, d.ns.srv.cr. Each server must be specified in a separate record.

When the zone status in the Control panel changes to DELEGATED, records will start being served from Servercore servers.
Wait for the NS records to propagate to the DNS servers. Propagation may take up to 72 hours.

Delegate the primary domain to a third-party hosting, and the subdomain to Servercore

Go to the control panel of the domain registrar where your primary domain is registered.
Ensure that the NS servers of the third-party hosting are specified for the primary domain.
Create a subdomain zone in Servercore:

3.1. In the Control panel, on the top menu, click Products and select DNS-hosting.

3.2. Click Add zone.

3.3. Enter the subdomain name with a trailing dot, for example first.example.com..

3.4. Click Add. NS and SOA records with default values are automatically created in the subdomain zone:
- NS — a.ns.srv.cr., b.ns.srv.cr., c.ns.srv.cr., d.ns.srv.cr.
- SOA — a.ns.srv.cr. dns.cloudflare.com. <zone_serial_number> 10000 2400 604800 1800, where <zone_serial_number> is the zone serial number, which changes when the zone is updated and signals caching servers that the records need to be recached.
3.5. Optional: transfer the subdomain zone to another project.
Delegate the subdomain:

4.1. Go to the control panel of the third-party hosting to which the primary domain is delegated.

4.2. In the primary domain's zone, create four NS records, one for each of the Servercore NS servers:
- record name — subdomain name, for example first.example.com;
- record value — one of the authoritative Servercore servers: a.ns.srv.cr, b.ns.srv.cr, c.ns.srv.cr, d.ns.srv.cr.
When the subdomain zone status in the Control panel changes to DELEGATED, records will start being served from Servercore servers.

4.3. Wait for the NS records to propagate to the DNS servers. Propagation may take up to 72 hours.

Delegate primary domain to Servercore, subdomain to a third-party hosting

In the Control panel, on the top menu, click Products and select DNS hosting.
Make sure you have created a zone for the primary domain and added resource records to it.
Delegate the primary domain to Servercore:

3.1. Go to the control panel of the domain registrar where your primary domain is registered.

3.2. In the domain's NS records, replace the values with Servercore's NS servers: a.ns.srv.cr, b.ns.srv.cr, c.ns.srv.cr, d.ns.srv.cr. Specify each server in a separate record.

When the zone status in the Control panel changes to DELEGATED, records will start being served from Servercore servers.
Delegate the subdomain to a third-party hosting:

4.1. In the Control panel, on the top menu, click Products and select DNS-hosting.

4.2. Open the primary domain zone page.

4.3. Add a group of NS records; to do this, click Add and provide the details:
- group name — subdomain name;
- record type — NS;
- record value — NS server name of the third-party hosting.
4.4. If you need to specify another NS server, click Add and paste the NS server name.

4.5. Click Add.
Wait for the NS records to propagate to the DNS servers. Propagation may take up to 72 hours.