Secondary DNS is an absolutely incredible service. Why? Because if your main server is down for any reason, your domain will still continue to function. This definitely saves a lot of money and stress.
Secondary DNS – what does it mean?
Almost everyone on the Internet uses the Domain Name System, even if they do not realize it. The purpose of DNS is to link the easy-to-remember domain names with its Internet Protocols. This domain has Primary DNS, which holds all the critical information. Many domains, however, employ Secondary DNS to ensure faster load times, better load balancing, and redundancy in the event of an outage or attack. So, we can say that Secondary DNS is an amazing service whose primary purpose is to link you to a DNS server network. You can find it with the other name like Backup DNS or Slave DNS.