2025-02-07
如何查看DNS或NameServer是否存在?
When we register a DNS, we usually need to register a NameServer with the registry first. For example, if we need a NameServer like "ns1.test.com," we must register the "ns1" NameServer with the registry for the .com domain. If this DNS is also to be used for other suffixes such as .cn, .vip, etc., we need to register this NameServer with each respective registry in order to use it. Sometimes, we need to check if a DNS already exists. Since querying the registry is usually not easy and only registrars have the permission to do so, we can also use an ICANN website to check.