Bitbucket IP Addresses

What are the Bitbucket IP addresses I should use to configure my corporate firewall?

To get current IP addresses of Bitbucket

var ips = require ('bitbucket-ips');
ips(function(err, addresses){
	console.log (addresses)
});

The current answer from Confluence:

{
  inbounds: [
    '131.103.20.167',
    '131.103.20.168',
    '131.103.20.169',
    '131.103.20.170'
  ],
  outbounds: [
    '131.103.20.165',
    '131.103.20.166'
  ]
}