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DNS servers run dedicated programs to communicate special protocols. So, when you enter a domain name in the address bar, the DNS server will send a DNS query to various servers, each of which translates to a different part of the domain name you entered. Types of DNS Servers There are three types of DNS servers- primary servers, secondary servers, and caching servers. Primary Servers The primary DNS server is the authoritative server of the zone where tasks like creating subdomains are performed. Apart from this, alterations related to the zone or modifications or additions to RRs in the zone files should be performed using the primary server only.

Generally there’s only one Chinese Student Phone Number List primary server for any given zone, except when you integrate AD services and a Microsoft DNS server. The primary DNS server usually has its own IP address that’s used by client computers to send queries while resolving a domain name into an IP address. It may behave as a secondary DNS server if several domains are hosted on the same computer. Secondary Servers Secondary DNS servers are backup servers hosted by your domain registrar. The guidelines are already set to allow them to handle DNS requests. It’s used to retrieve DNS records where the main server isn’t available or fails to perform its function. They also help to automatically update information from .



The primary server so that you don’t have to do it manually when there are any changes in your infrastructure. Caching Servers Caching servers behave as an extra layer of backup for primary and secondary servers. However, these are complicated and time-taking to configure. What is a DNS Record? A DNS record is a set of instructions loaded on a DNS server that tells about a domain and its corresponding IP address. for the process of DNS lookup. All domains must have at least a few vital DNS records so that users can access their website using a domain name. Apart from this, there are a few optional record types too. Which Type of DNS Record Identifies an Email Server.