How to resolve a hostname to an IP address in Node.js?
Introduction:
Have you heard about DNS? If you know about DNS then you have solved your half problem. DNS which is Domain Name System is a telephone directory for the Internet. Every domain like facebook.com, google.com etc belongs to an IP address. DNS translates domain names to IP addresses so browsers can load Internet resources.
To resolve hostname to IP address in Node.js, we can use DNS module of Node.js. DNS module provides different APIs to resolve hostname to IP address.
If you wan to get the default IP address of the hostname then you can use dns.resolve() function.
const dns = require("dns");
dns.resolve("google.com", function(err, result ){
console.log(result);
})
To resolve host to IPV6 address then you can use dns.resolve6() function.
const dns = require("dns");
dns.resolve6("google.com", function(err, result ){
console.log(result);
})
The result of above function is a list containing the ip addresses.
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