1. The naming format of the domain name is: WWW. < user name;. < two level domain name;. < first-level domain name > dig www.baidu.com
Explanation of the parsing process:
· The DNS client contracted to the DNS server to request the IP address of the www.baidu.com due to a CNAME record;
· The DNS client accesses the www.a.shifen.com domain name server (the equivalent of a domain name server that accesses www.baidu.com);
· Here www.a.shifen.com Domain Name server is responsible for DNS query traffic balance Scheduler, responsible for the DNS request to the ns5.a.shifen.com, ns6.a.shifen.com and other domain name servers
· Finally, the name servers marked NS will return the IP of Baidu to the DNS client.
· And then we got the www.baidu.com IP address.
2. Host www.smatrix.org
3, host-t NS smatrix.org
4, Fierce-dns samtrix.org
5, Nslookup www.smatrix.org
linux--Information Analysis (iv) Domain name Analysis dig, host,