title: Regex everything except IP Address
body: <p>I have a big txt file and there is a lot of string,space and IP i just want the IP addresses how can i regex everything except IP? i trying some regex to do that but nothing work for eg:</p>
  
  <pre><code>(?!([0-9]{1,3}\.){3}[0-9]{1,3}).*
  </code></pre>
  
  <p>but it regex everything except 3 first digit number of ip addresses.
  Thank you</p>