Yet another useful DNS tool besides nslookup is dig. It can be used through the Linux command line that offers a quick check of the DNS records.
Prerequisites
- Amazon Linux 2
- sudo privileges
Install Dig on Amazon Linux 2
Step 1. Update Amazon Linux 2 system packages.
sudo yum update
Step 2. Install dig.
sudo yum install bind-utils
Step 3. Verify installation.
dig -v
Output:
DiG 9.11.4-P2-RedHat-9.11.4-26.P2.amzn2.5.2
Dig google.com:
dig google.com
Output:
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.amzn2.5.2 <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35292
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 168 IN A 74.125.193.138
google.com. 168 IN A 74.125.193.139
google.com. 168 IN A 74.125.193.101
google.com. 168 IN A 74.125.193.113
google.com. 168 IN A 74.125.193.102
google.com. 168 IN A 74.125.193.100
;; Query time: 68 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri Apr 29 13:18:47 UTC 2022
;; MSG SIZE rcvd: 135
Conclusion
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