The TTL or Time To Live DNS records are set by an authoritative nameserver for a particular resource record. TTL defines the duration in seconds that the record may be cached by client side programs.
To edit the TTL setting of an existing DNS record, you just need to find the record in the domain/subdomain’s details. (To open a domain/subdomain’s DNS details please click on host’s name in the list below.) Then replace the current TTL value with the desired setting and click the “Modify” button.