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There are many websites in the world are live and operational on the Internet. they're hosted and managed by web servers that are located everywhere on the planet . to seek out an internet site and where it’s being hosted requires a directory, without which it might be virtually impossible to seek out websites.
DNS stands for name System which is that the largest digital database for the web within the world. This database contains information about every website within the world.
Every website and each machine that comes on the web has an IP address which may be a digital address.
The name of an internet site is stored alongside its IP address during this database. the info files that tell an internet server the way to answer an invitation by an inquiry browser are referred to as DNS records.
In computer jargon, DNS records are called ‘mapping files.’ When an internet server sends an invitation by a user to go to a specific website, the request is shipped to the DNS database.
This database check for its records in the database, finds the website’s IP address, and forwards it to the requesting server. After getting this information, the requesting server uses the IP address to seek out the website and display it to the user who initiated the request.
There are letters associated with the DNS records which are referred to as DNS syntax. a number of the commonly used syntax with all DNS records are; A, AAAA, CNAME, MX, PTR, NS, SOA, SRV, TXT, and NAPTR.