For example, Google.com is a simple domain name that is easy to remember. On the other hand, the computer-compatible IP address might look something like this: 64.233.160.0. That is complex and difficult to remember.
DNS is one of the most significant internet services. Its the communicator and custodian of online experiences. Everything, from the web content to the email, depends on DNS functioning on a round-the-clock basis.
Each device connected with the internet has a unique numeric identifier called the IP address that other devices use to find that connected device on the internet.
DNS (Domain Name System) is a formidable global system for translating the host/domain names into their corresponding IP addresses. Its like a phone book directory on the internet.
DNS servers remove the need for humans to memorize IP addresses like 8.8.8.8 (IPv4) or 2001:4860:4860::8888 (IPv6). Instead, they contain the mapping files called DNS records that map the domain name to the correct IP address.
When users want to access a URL, like abc.com, their web browser performs a DNS query against a DNS server, supplying the domain name. The DNS server contains the DNS records for that domain. It takes the domain/hostname and resolves it into a numeric IP address to which the web browser can connect.
As per rough estimations, a single web page request results in an average of 50 DNS requests.
When you change your DNS records, the changes need 24 to 72 hours to propagate. After that time, you must check the DNS propagation results. Suppose after the propagation time; your DNS records are still not fully propagated. Then it must be an alarming situation.
Its a fact that any critical DNS issue will make the entire business down, and you got to be as soon as possible in restoring them.
Therefore, it would be beneficial if you have a DNS health test tool for troubleshooting DNS problems.
