What are DNS records?
The domain name system (DNS) is the heart of a website. The DNS is a set of records that determines how each domain is comprehended by computers. While humans tend to remember domain names more easily than IP addresses, a DNS lookup helps the user convert a domain name into its corresponding IP address. Whenever a user enters a domain name in the browser, the DNS resolver initiates the first step of checking its cache for the required information. If it fails to get the info from its cache, then it pings its authoritative name-servers, and the process repeats until the domain name gets resolved into its IP.
Forward and reverse DNS lookup
There are two types of DNS lookup: forward and reverse lookup. In a forward DNS lookup, the domain is resolved into its IP. Like its name suggests, a reverse DNS lookup does the opposite of what a forward DNS lookup would do. This lookup helps us get a domain name for a specific IP.
Frequently Asked Questions
Do I need DNS records?DNS records are the means by which a user is directed to the desired website on the internet. Without a DNS record, anyone would find it difficult to remember random IP numbers for each website.
Can I delete DNS records?DNS records can be deleted from your zone file, but once deleted, they cannot be recovered, so it’s recommended to delete the records judiciously.
What is a DNS cache?A DNS cache is a mechanism in which the DNS temporarily stores information from the previous lookups for quick retrieval. Though caching can make the process easier, sometimes it can also result in an outdated or corrupted copy. To avoid this kind of DNS failure, it’s always advised to flush the DNS cache once a while.
What is DNS failure?
DNS failure happens when DNS makes a request but is unable to connect to the server.