Intelligent Proxy Steering - Office365

Trying to run new node.js but seems unable to run the module. Any idea about below error ...

[root@localhost:Active:Standalone] office365_ipi_extension npm install xml2js https repeat lokijs ip-range-check --save npm ERR! Linux 3.10.0-514.26.2.el7.ve.x86_64 npm ERR! argv "/usr/bin/node" "/usr/bin/.npm__" "install" "xml2js" "https" "repeat" "lokijs" "ip-range-check" "--save" npm ERR! node v6.9.1 npm ERR! npm v3.10.8 npm ERR! code EAI_AGAIN npm ERR! errno EAI_AGAIN npm ERR! syscall getaddrinfo

npm ERR! getaddrinfo EAI_AGAIN registry.npmjs.org:443 npm ERR! npm ERR! If you need help, you may report this error at: npm ERR! https://github.com/npm/npm/issues

npm ERR! Please include the following file with any support request: npm ERR! /var/ilx/workspaces/Common/office365_ipi_workspace/extensions/office365_ipi_extension/npm-debug.log