Whem Ionic error happened:

Error: connect ETIMEDOUT 34.196.18.91:443 at Object._errnoException (util.js:1022:11) at _exceptionWithHostPort (util.js:1044:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1198:14)

Try Fellowing solution:

PROXY=http://proxy.yourcompany.com:8080 ionic start 

Whem running command, will auto detect some package should be installed

? Detected PROXY in environment, but to proxy CLI requests, you'll need @ionic/      y
? Detected PROXY in environment, but to proxy CLI requests, you'll need @ionic/
cli-plugin-proxy installed. Install now? Yes
> npm i -g @ionic/cli-plugin-proxy@latest
√ Running command - done!

That’s all