How does DNS (Route53) work?

DNS, or the Domain Name System, is a crucial component of the internet that allows humans to access websites using human-readable domain names, rather than numerical IP addresses. At its core, DNS is a system that associates domain names with IP addresses. This association is stored in a DNS resolver, which acts as a kind of dictionary for domain names and IP addresses.

When a user wants to access a website, their browser first checks its cache to see if it already has the IP address for the domain name. If the cache doesn't have the IP address, the browser forwards the request to a DNS resolver. The DNS resolver also has a cache, and it checks to see if it has the IP address for the domain name. If the IP address is not in the cache, the resolver queries the root server, which has information about the top-level domain servers for the various TLDs (such as .com, .jp, .uk, and so on).

The root server responds to the query with the IP address for the TLD server that is responsible for the domain name in question. For example, if the domain name is "example.co.jp," the root server would respond with the IP address for the .jp TLD server. The TLD server then responds to the resolver with the IP address for the authoritative name server that is responsible for the domain name in question. In the case of "example.co.jp," this might be Route 53, which is a DNS service provided by Amazon Web Services.

The authoritative name server is where the domain name and IP address are stored. When the resolver contacts the authoritative name server, it returns the IP address for the domain name, and the resolver caches this information so it can be quickly retrieved in the future. The resolver then returns the IP address to the browser, which can then use it to access the website.

In addition to Route 53, there are many other DNS services available, including Onamae.com. Onamae.com is a popular DNS registrar in Japan that provides domain registration and management services, as well as DNS hosting and other related services. Just like Route 53 and other DNS services, Onamae.com plays an important role in helping users access websites using human-readable domain names.

In conclusion, the DNS system is a vital component of the internet that allows humans to access websites using easy-to-remember domain names, rather than complex numerical IP addresses. Services like Route 53 and Onamae.com are key players in the DNS ecosystem, helping to ensure that domain names are associated with the correct IP addresses and that users can access the websites they want to visit with ease.