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IP Blacklist Check Script

/ Published in: PHP
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Enter any suspicious IP address that you wanted to check into the form field and press the "LOOKUP" button

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Copy this code and paste it in your HTML 
  1. <html>
  2. <head>
  3. <title>DNSBL Lookup Tool - IP Blacklist Check Script</title>
  4. </head>
  5. <body>
  6. <form action="" method="get">
  7. <input type="text" value="" name="ip" />
  8. <input type="submit" value="LOOKUP" />
  9. </form>
  10. <?php
  11. /***************************************************************************************
  12. This is a simple PHP script to lookup for blacklisted IP against multiple DNSBLs at once.
  13.  
  14. You are free to use the script, modify it, and/or redistribute the files as you wish.
  15.  
  16. Homepage: http://dnsbllookup.com
  17. ****************************************************************************************/
  18. function dnsbllookup($ip){
  19. $dnsbl_lookup=array("dnsbl-1.uceprotect.net","dnsbl-2.uceprotect.net","dnsbl-3.uceprotect.net","dnsbl.dronebl.org","dnsbl.sorbs.net","zen.spamhaus.org"); // Add your preferred list of DNSBL's
  20. if($ip){
  21. $reverse_ip=implode(".",array_reverse(explode(".",$ip)));
  22. foreach($dnsbl_lookup as $host){
  23. if(checkdnsrr($reverse_ip.".".$host.".","A")){
  24. $listed.=$reverse_ip.'.'.$host.' <font color="red">Listed</font><br />';
  25. }
  26. }
  27. }
  28. if($listed){
  29. echo $listed;
  30. }else{
  31. echo '"A" record was not found';
  32. }
  33. }
  34. $ip=$_GET['ip'];
  35. if(isset($_GET['ip']) && $_GET['ip']!=null){
  36. if(filter_var($ip,FILTER_VALIDATE_IP)){
  37. echo dnsbllookup($ip);
  38. }else{
  39. echo "Please enter a valid IP";
  40. }
  41. }
  42. ?> 
  43. </body>
  44. </html>

URL: https://sourceforge.net/projects/dnsbllookup/

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