request library ends up passing whatever's in the HTTPS_PROXY env var to url.parse(), and thus:

$ nodejs -e "require('url'); console.log(url.parse('208.80.154.22:8080'))"
Url {
  protocol: '208.80.154.22:',
  slashes: null,
  auth: null,
  host: '8080',
  port: null,
  hostname: '8080',
  hash: null,
  search: null,
  query: null,
  pathname: null,
  path: null,
  href: '208.80.154.22:8080' }

And then the decimal integer "8080", interpreted as a 32-bit integer IP, would be 0.0.31.144 ...