Manage DNS records (advanced interface mode with dynamic response)

Gcore Managed DNS advanced interface mode allows creating DNS record sets (RRSets) with dynamic response — routing DNS responses based on geography, weight, latency, or health checks.

Create a DNS record

1. Select a DNS zone

   Navigate to All zones and select the zone to which records should be added. Alternatively, click the three-dot icon on the right and select Go to records.

   

   Check that the Advanced toggle in the Interface mode section is enabled (green):

   
2. Open the record creation form

   Click Add record set.

   

   A new page opens with the record creation form.

   
3. Select the record type

   In the Type field, select the DNS record type: A, AAAA, NS, CNAME, MX, SRV, HTTPS, TXT, CAA, or SVCB. Each type is described in DNS records.

4. Set the record name

   In the Name field, specify the subdomain the record belongs to. The options are:

   • Leave the field blank to add a record for the apex domain (sample-test.com).
   • Enter a subdomain name to add a record for that subdomain. Entering one creates a record for one.sample-test.com.
   • Enter an asterisk (*) to add a wildcard record that applies to all subdomains.
5. Set the TTL

   In the TTL field, specify the TTL (time to live) in seconds.

   TTL operation

   Consider an A record with a TTL of 300 seconds, equal to 5 minutes. If the value changes from 10.0.0.1 to 10.0.0.0, users requesting the domain will receive the server with IP 10.0.0.1 for up to 5 minutes (this value will be stored in the cache of recursive DNS servers). Within a maximum of 5 minutes, the DNS server will see the new value of the A record and refresh its cache, after which users will be directed to the server with IP 10.0.0.0.

   The point within the 300-second interval at which the record changes determines how long users wait to access the new record. If the change occurs 240 seconds into the TTL, users wait only one minute; if it occurs at 1 second, they wait 4 minutes and 59 seconds. Select a TTL duration according to the maximum wait-time tolerance.

6. Configure dynamic response (optional)

   The dynamic response feature is available on the Free plan, but creating more than one dynamic RRset requires a paid plan.

   Gcore’s DNS servers can return different DNS records to different users — users in Asia can be directed to an Asian server and users in Europe to a European one. This is called dynamic response. Full configuration instructions are in dynamic response.

   To enable dynamic response, check the Dynamic response checkbox. Leave it unchecked to proceed without dynamic response.

   Dynamic response can also be configured via API using dynamic RRsets. The DNS API reference covers picker and selector options.

7. Set the record value status

   Each record value is active by default. To save a value without activating it, uncheck the toggle next to that record.

8. Enter the record value

   In the Content field, enter a value for the record type.

   Example values by record type

   Record type | Example value ---|--- A | 128.128.128.128 AAAA | 2001:0db8:85a3:0000:0000:8a2e:0370:7334 NS | ns1.smth.com CNAME | uuuuu8.cdn.co MX | ASPMX.L.GOOGLE.COM (for multiple servers, fill in the Priority field; lower value = higher priority) SRV | _sip._tcp.example.com. 3600 IN SRV 10 50 5060 sipserver.example.com HTTPS | example.com. 1800 IN HTTPS 1 . alpn=h3,h3-29,h2 ipv4hint=1.2.3.4,9.8.7.6 TXT | logmein-verification-code=976afe6f-8039-40e4-95a5-261b462 CAA | 0 issue "comodo.com" (format: [flags] [tag] "[value]")

9. Add metadata (optional)

   Specify associated metadata to be used for dynamic response configuration. The metadata guide covers the full configuration.

10. Add more record values (optional)

    Click Add record to specify additional values for the record set. A new record entry appears — enter the content and metadata as needed. To remove a record value, click the minus button next to it. To disable a value without removing it, uncheck its toggle.

11. Create the record

    Click Create.

    The record set is created with the specified parameters. The DNS Lookup tool verifies that the record is propagated correctly.

Manage a DNS record

1. Select a DNS zone

   Navigate to All zones and select the zone containing the records to edit or delete.

   
2. Edit or delete a record

   To edit a record, click its name or select Edit record from the three-dot menu — both open the same edit form. To delete a record, click the three-dot icon and select Delete.