clean

.hta_slug/ns-lookup.php

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+    <section class="diZContainer diZmxAuto">
+        <h2 class="diZBorderBottom">Domain DNS Information Viewer</h2>
+    </section>
+    <!-- <p class="diZTextJustify">NS Lookup simplifies checking DNS records. Enter any domain to instantly retrieve and explore its DNS details, including A, AAAA, MX, CNAME records, and more. Ideal for IT professionals and website administrators seeking quick and accurate DNS insights.</p> -->
+    <form method="post" class="diZToolsSection diZmt4 diZmb4 diZBorderRadius diZPadding5px">
+        <div class="diZFlexRowCol  diZJustifyCenter diZItemsCenter">
+            <input class="diZmr2 diZw70" placeholder="Domain Name" name="domain" type="text" />
+            <button class="diZmr2" type="submit" value="Check"><span>Check</span></button>
+        </div>
+    </form>
+    <?php
+        if(isset($_POST['domain']) && $_POST['domain']){
+            function validateDomain($domain) {
+                $regex = "/^(?!\-)(?:[a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]\.)+[a-zA-Z]{2,}$/";
+                if (preg_match($regex, $domain)) { 
+                    return true;
+                } else {
+                    return false;
+                }
+            }
+            $domain = isset($_POST['domain']) ? $_POST['domain'] : '';
+            if ($domain && validateDomain($domain)) {
+                $command = 'dig '.$_POST['domain']. ' NS';
+                $escaped_command = escapeshellcmd($command);
+                $output = shell_exec($escaped_command);
+                echo '<div class="diZContainer diZmxAuto diZPadding5px"><pre class="diZTextJustify" style="width: fit-content;"> ',$output, '</pre> <br><br></div>';
+            } else {
+                echo "Invalid domain.";
+            }
+        }
+    ?>
+