root@VM-38-204-ubuntu:~# host baidu.com

baidu.com has address 220.181.57.216

baidu.com has address 123.125.114.144

baidu.com mail is handled by 15 mx.n.shifen.com.

baidu.com mail is handled by 20 mx1.baidu.com.

baidu.com mail is handled by 20 jpmx.baidu.com.

baidu.com mail is handled by 20 mx50.baidu.com.

baidu.com mail is handled by 10 mx.maillb.baidu.com.

root@VM-38-204-ubuntu:~# dig baidu.com

; <<>> DiG 9.10.3-P4-Ubuntu <<>> baidu.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12243

;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 4096

;; QUESTION SECTION:

;baidu.com.                     IN      A

;; ANSWER SECTION:

baidu.com.              547     IN      A       220.181.57.216

baidu.com.              547     IN      A       123.125.114.144

;; Query time: 0 msec

;; SERVER: 10.236.158.106#53(10.236.158.106)

;; WHEN: Wed Apr 17 11:19:07 CST 2019

;; MSG SIZE  rcvd: 70

root@VM-38-204-ubuntu:~# nslookup baidu.com

Server:         10.236.158.106

Address:        10.236.158.106#53

Non-authoritative answer:

Name:   baidu.com

Address: 220.181.57.216

Name:   baidu.com

Address: 123.125.114.144