Linux uses nslookup and dig to query domain name and IP information

Introduction

nslookupanddigThe (Domain Information Groper) command is used to queryDNS(Domain Name System) Server to obtain DNS record information such as domain name and IP address.

nslookup command

nslookup(Name Server Lookup) command is used for queryingDNSOld tool for recording. Although still available, it has been deprecated and replaced bydig。

Basic usage

nslookup [domain-name]

Example usage

nslookup 

Sample output

Server:        192.168.1.1
Address:    192.168.1.1#53

Non-authoritative answer:
Name:
Address: 142.250.183.110

Query the specified DNS server

Use a custom DNS server instead of the system's default DNS server

nslookup  8.8.8.8

Query MX (Mail Exchange) records

nslookup -query=MX 

Reverse DNS lookup (get domain name from IP)

nslookup 142.250.183.110

dig command

digCommands are a more powerful and flexible tool for querying DNS information.

Basic usage

dig [options] [domain-name] [record-type]

Query the IP address from the domain name

dig 

Sample output

;; ANSWER SECTION:
.        299    IN    A    142.250.183.110

The IP address (A record) of # is 142.250.183.110

Query a specific DNS server

dig @8.8.8.8 

Query MX (mail exchange) records

dig  MX

Sample output

.        3599    IN    MX    50 .
.        3599    IN    MX    40 .

Reverse query DNS

dig -x 142.250.183.110

Get short answers only

dig +short 

Query all DNS records

dig  ANY

The difference between nslookup and dig

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