如果你以前从未注册过自己的域名，那么这个过程可能会显得有点混乱或让人不知所措。考虑到这一点，域名注册过程是如何工作的？今天的超级用户问答有一个困惑读者的问题的答案。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户读者user43364想知道域名注册过程是如何工作的：

When you pay a company money to register a domain name, what do they do? Is it possible to register a domain name without using one of these services?

域名注册过程是如何工作的？

答案

超级用户贡献者grawity为我们提供了答案：

The DNS is global and hierarchical. ICANN manages the root domain . <- (dot), which contains information about which organizati*** manage the top-level domains (like com, ru, & moe), and those domains contain information about who owns the second-level domains (like superuser.com, yandex.ru, & nic.moe).

When you buy an example.com domain from a registrar (Dynadot, GoDaddy, etc.), it contacts the com operators (VeriSign), who then update their information noting that information about example.com is kept on the registrar’s name servers (or your own, if you prefer). This way, the rest of the world knows where to look for your domain name.

The same process can be done at any level – example.com itself can delegate higher-level domains (sub-domains) to other name servers, like eu.org or freedns.afraid.org do.

Technically, you could run your own DNS server (using commonly available software such as BIND9) and configure whatever domain names you want on it. It would simply be invisible to the rest of the Internet as no one would know that your DNS server exists and what domains it has.

This is actually common in local networks – some corporati*** have their internal DNS servers configured for domains like internal.company.com (or corp or int). Even some home gateways have an internal domain like home for all computers in the LAN.

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