Toss DNS for domain names

Recently, the purchase of the domain name encountered a few concepts, just at the beginning is not very understand, and finally are directly to find customer service to me to change, and now a summary of help understand.

DNS domain name management is grouped by suffix, such as. com domain name, as the first commercial domain name, has a high value for promotion. Another example is the top-level domains of various countries, such as China's. cn, Canada. CA, easy to remember. What we buy is the usual sense that the part between WWW and top-level domain name is called level two domain name.

The level two domain name will be hung under a root domain name, each root domain name will be divided to each contractor to contract, each sells. There is an international organization in the mix, called Internet Corporation for Assigned Names and Numbers (ICANN), is responsible for coordinating the domain name underwriting related matters, so each domain name transactions also need to draw some water.

The main function of DNS is to use a simple memory string, instead of a string of irregular numbers of IP addresses, convenient for people to access the Internet. For the general Web site, we add two A records to be good. The host field of the first a record is filled @, which indicates that the domain name starts with a level two domain name. The IP address is filled in with the VPS corresponding IP address. The host domain of the second a record is WWW, which indicates which IP address should be queried when accessing with Www.yourname.info. I am lazy, www do not want, you can set 301 redirect, positioning to yourname.xxx.

In addition, the domain name provider generally has its own DNS server, if lazy words can be used directly. The pursuit of domestic access speed, you can try Dnspod, it is said that the effect of tension pile. The domain name provider starts by giving a few built-in records that point to the newly-bought domain name to its own page. There is a CNAME record inside. What is a CNAME record used for? It's still used for lazy use. Assuming I have ftp.example.com,ssh.example.com,media.example.com, if my host IP address changes, I need to change it three times. If I set up a CNAME record, FTP, SSH and media three subdomains are pointing to example.com, then I just change example.com point to the IP address is good, the others do not change, perfect!

There is a more fun is txt, can be used to write a paragraph, such as the introduction of the domain name. Of course, now this domain to use more robots, such as the Google home in order to let you prove that you own the domain name, will let you add a TXT record, the content is a random string, and then check whether the setting is successful.

Toss DNS for domain names