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An A record: DNS record type and domain name resolution for address record
What is an A record?
An A record, also known as an address record, is a type of DNS (Domain Name System) record. It is used to map a domain name to an IP address. When you enter a domain name in a web browser, the A record is consulted to determine the corresponding IP address of the server hosting the website.
How does it work?
When a user enters a domain name (e.g., www.example.com) in their web browser, the browser first looks up the DNS information for that domain. It queries the DNS server, which typically holds the domain’s A record among other DNS records.
The A record consists of a hostname and an IP address. The hostname is the domain name itself, and the IP address is the numerical address of the server where the website’s content is stored. The A record provides the translation between the human-friendly domain name and the computer-friendly IP address.
Once the browser obtains the IP address from the A record, it establishes a connection to the server using that IP address. The server responds by sending the requested webpage, which is then displayed to the user in the web browser.
Why are A records important?
A records are crucial because they enable the efficient resolution of domain names to IP addresses. Without A records, users would have to remember and enter the exact IP address of a website, which is not practical. Domain names are much easier to remember and use.
A records also play a key role in website availability. If the A record is not correctly configured or there are issues with the IP address it points to, users may experience difficulties accessing the website. Therefore, it is vital to maintain the accuracy of A records to ensure smooth and reliable online experiences.
Conclusion
A records are essential components of the DNS system and domain name resolution. They allow users to conveniently access websites using human-readable domain names, while the A records themselves handle the behind-the-scenes translation to the IP addresses that computers use to communicate. Understanding A records and proper configuration is crucial for maintaining a functional and accessible online presence.
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