title: npm command create-react-app failled
body: <p>I am trying to test reactjs on my computer (mbp pro 2017) running OsX sierra 10.12.6. 
  I have followed the Facebook tutorial:</p>
  
  <ol>
  <li>Make sure you have a recent version of Node.js installed. <em>(done)</em></li>
  <li>Follow the installation instructions to <strong>create a new project</strong>. <a href="https://facebook.github.io/react/docs/installation.html#creating-a-new-application" rel="nofollow noreferrer">https://facebook.github.io/react/docs/installation.html#creating-a-new-application</a></li>
  </ol>
  
  <p>But i have a problem on this second step !</p>
  
  <ul>
  <li>I am not behind a proxy.</li>
  <li>my network is ok.</li>
  <li>The repository is set to registry.npmjs.org</li>
  <li>i can read the url : <a href="https://registry.npmjs.org/create-react-app" rel="nofollow noreferrer">https://registry.npmjs.org/create-react-app</a></li>
  <li>But this domain is not found even on external DNS <strong>wsg.intra.corp.grp</strong></li>
  </ul>
  
  <p>I'am stuck, any help will be nice !</p>
  
  <pre><code>$ npm install -g create-react-app
  npm ERR! code ENOTFOUND
  npm ERR! errno ENOTFOUND
  npm ERR! network request to https://registry.npmjs.org/create-react-app failed, reason: getaddrinfo ENOTFOUND wsg.intra.corp.grp wsg.intra.corp.grp:8080
  npm ERR! network This is a problem related to network connectivity.
  npm ERR! network In most cases you are behind a proxy or have bad network settings.
  npm ERR! network 
  npm ERR! network If you are behind a proxy, please make sure that the
  npm ERR! network 'proxy' config is set properly.  See: 'npm help config'
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     ~/.npm/_logs/2017-09-01T08_15_13_521Z-debug.log
  </code></pre>
  
  <p>And the log file :</p>
  
  <pre><code>0 info it worked if it ends with ok
  1 verbose cli [ '/usr/local/bin/node',
  1 verbose cli   '/usr/local/bin/npm',
  1 verbose cli   'install',
  1 verbose cli   '-g',
  1 verbose cli   'create-react-app' ]
  2 info using npm@5.3.0
  3 info using node@v8.4.0
  4 verbose npm-session 4811d091ad74f9ef
  5 silly install loadCurrentTree
  6 silly install readGlobalPackageData
  7 silly fetchPackageMetaData error for create-react-app@latest request to https://registry.npmjs.org/create-react-app failed, reason: getaddrinfo ENOTFOUND wsg.intra.corp.grp wsg.intra.corp.grp:8080
  8 verbose type system
  9 verbose stack FetchError: request to https://registry.npmjs.org/create-react-app failed, reason: getaddrinfo ENOTFOUND wsg.intra.corp.grp wsg.intra.corp.grp:8080
  9 verbose stack     at ClientRequest.req.on.err (/usr/local/lib/node_modules/npm/node_modules/pacote/node_modules/make-fetch-happen/node_modules/node-fetch-npm/src/index.js:68:14)
  9 verbose stack     at emitOne (events.js:115:13)
  9 verbose stack     at ClientRequest.emit (events.js:210:7)
  9 verbose stack     at onerror (/usr/local/lib/node_modules/npm/node_modules/pacote/node_modules/make-fetch-happen/node_modules/https-proxy-agent/node_modules/agent-base/index.js:106:9)
  9 verbose stack     at callbackError (/usr/local/lib/node_modules/npm/node_modules/pacote/node_modules/make-fetch-happen/node_modules/https-proxy-agent/node_modules/agent-base/index.js:126:5)
  9 verbose stack     at &lt;anonymous&gt;
  9 verbose stack     at process._tickCallback (internal/process/next_tick.js:188:7)
  10 verbose cwd /Users/franckfournier/PycharmProjects/projectX/react
  11 verbose Darwin 16.7.0
  12 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "create-react-app"
  13 verbose node v8.4.0
  14 verbose npm  v5.3.0
  15 error code ENOTFOUND
  16 error errno ENOTFOUND
  17 error network request to https://registry.npmjs.org/create-react-app failed, reason: getaddrinfo ENOTFOUND wsg.intra.corp.grp wsg.intra.corp.grp:8080
  18 error network This is a problem related to network connectivity.
  18 error network In most cases you are behind a proxy or have bad network settings.
  18 error network
  18 error network If you are behind a proxy, please make sure that the
  18 error network 'proxy' config is set properly.  See: 'npm help config'
  19 verbose exit [ 1, true ]
  </code></pre>