DNSmerkintöihin

DNSmerkintöihin, often translated as DNS records, are fundamental components of the Domain Name System (DNS). They are instructions that contain information about a domain name, such as its IP address or mail server. Think of DNS as the internet's phonebook, and DNS records are the individual entries within that book.

There are several types of DNS records, each serving a specific purpose. The most common is the A record (Address record), which maps a domain name to an IPv4 address. For example, it might tell your computer that the domain name example.com corresponds to the IP address 93.184.216.34. Another crucial type is the AAAA record, which serves the same function but for IPv6 addresses.

Other important record types include MX (Mail Exchanger) records, which specify the mail servers responsible for accepting email messages on behalf of a domain. CNAME (Canonical Name) records create aliases, allowing one domain name to point to another. NS (Name Server) records indicate which DNS servers are authoritative for a domain. TXT (Text) records allow administrators to add arbitrary text to a record, often used for verification purposes or to store other miscellaneous information.

When you type a web address into your browser, your computer queries DNS servers to find the corresponding IP address. These queries rely on DNS records to retrieve the necessary information, enabling your browser to connect to the correct server and load the website. Understanding DNS records is therefore essential for comprehending how the internet functions.