diff --git a/src/Basis.php b/src/Basis.php
index 09e018c..dfc4721 100644
--- a/src/Basis.php
+++ b/src/Basis.php
@@ -74,25 +74,33 @@ function officeInfo(): array { // office dir and kms key for different version
     );
 }
 
-function officeCommand(string $dir, string $key, string $host): string { // load office active command
+function officeCommand(string $dir, string $key, string $host, int $port): string { // load office active command
     $command = 'if exist "%ProgramFiles%\Microsoft Office\\' . $dir . '\ospp.vbs" ';
     $command .= 'cd /d "%ProgramFiles%\Microsoft Office\\' . $dir . "\"\n";
     $command .= 'if exist "%ProgramFiles(x86)%\Microsoft Office\\' . $dir . '\ospp.vbs" ';
     $command .= 'cd /d "%ProgramFiles(x86)%\Microsoft Office\\' . $dir . "\"\n";
     $command .= "cscript ospp.vbs /inpkey:$key\n";
     $command .= "cscript ospp.vbs /sethst:$host\n";
+    if ($port != 1688) {
+        $command .= "cscript ospp.vbs /setprt:$port\n";
+    }
     $command .= "cscript ospp.vbs /act\n";
     return $command . "cscript ospp.vbs /dstatus\n";
 }
 
-function osppCommand(string $host): array { // load office ospp command
-    return array(
-        '/dstatus' => ['Displays license information for installed product keys.', '显示当前已安装产品密钥的许可证信息'],
-        '/dstatusall' => ['Displays license information for all installed licenses.', '显示当前已安装的所有许可证信息'],
-        '/unpkey:XXXXX' => ['Uninstalls an product key with the last five digits of it.', '卸载已安装的产品密钥（最后5位）'],
-        '/inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX' => ['Installs a product key with a user-provided product key.', '安装产品密钥'],
-        "/sethst:$host" => ['Sets a KMS host name with a user-provided host name.', '设置 KMS 主机名'],
-        '/remhst' => ['Removes KMS host name and sets port to default.', '删除 KMS 主机名'],
-        '/act' => ['Activates installed Office product keys.', '激活 Office'],
+function osppCommand(string $host, int $port): array { // load office ospp command
+    $osppCmd = array(
+        '/dstatus' => ['Display license information for installed product keys.', '显示当前已安装产品密钥的许可证信息'],
+        '/dstatusall' => ['Display license information for installed licenses.', '显示当前已安装的所有许可证信息'],
+        '/unpkey:XXXXX' => ['Uninstall a product key with the last five digits of it.', '卸载已安装的产品密钥（最后5位）'],
+        '/inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX' => ['Install a product key with user-provided product key.', '安装产品密钥'],
+        "/sethst:$host" => ['Set a KMS host name with user-provided host name.', '设置 KMS 主机名'],
+        "/setprt:$port" => ['Set a KMS port with user-provided port number.', '设置 KMS 主机端口'],
+        '/remhst' => ['Remove KMS host name and sets port to default.', '删除 KMS 主机名'],
+        '/act' => ['Activate installedOffice product keys.', '激活 Office'],
     );
+    if ($port == 1688) {
+        unset($osppCmd["/setprt:$port"]); // remove setprt option with default port
+    }
+    return $osppCmd;
 }
diff --git a/src/KmsCli.php b/src/KmsCli.php
index 8e079b5..b79ff69 100644
--- a/src/KmsCli.php
+++ b/src/KmsCli.php
@@ -43,13 +43,16 @@ function showHelpCli(string $host, int $port): void { // show help message in sh
     echo "             -> http://$host/win-server/gbk\n\n";
 }
 
-function showOfficeCli(string $host): void { // show office commands in shell
+function showOfficeCli(string $host, int $port): void { // show office commands in shell
+    if (isIPv6($host)) { // host without ipv6 bracket
+        $host = '[' . $host . ']';
+    }
     $lenLeft = $lenRight = 0;
-    $ospp = osppCommand($host);
+    $ospp = osppCommand($host, $port);
     foreach (officeInfo() as $version => $officeInfo) {
         echo "\n" . genStr(34) . "Office Professional Plus $version VL Activation Command\n";
         echo genStr(120, '-') . "\n";
-        echo officeCommand($officeInfo[0], $officeInfo[1], $host);
+        echo officeCommand($officeInfo[0], $officeInfo[1], $host, $port);
         echo genStr(120, '-') . "\n";
     }
     foreach ($ospp as $cmd => $desc) {
diff --git a/src/KmsWeb.php b/src/KmsWeb.php
index 698fb5b..77fdc89 100644
--- a/src/KmsWeb.php
+++ b/src/KmsWeb.php
@@ -35,18 +35,21 @@ function showHelpHtml(string $host, int $port): void { // show help message in h
     echo '<a href="./win-server">KMS_KEY (Windows Server)</a></p></div></body></html>';
 }
 
-function showOfficeHtml(string $host): void { // show office commands in html
+function showOfficeHtml(string $host, int $port): void { // show office commands in html
+    if (isIPv6($host)) { // host without ipv6 bracket
+        $host = '[' . $host . ']';
+    }
     echo '<!DOCTYPE html><html lang="zh-CN"><head><meta charset="utf-8">';
     echo '<meta name="viewport" content="width=device-width, initial-scale=1.0">';
     echo '<link rel="stylesheet" href="./assets/style.css" />';
     echo "<title>Office KMS Server</title></head>\n<body><div>";
     foreach (officeInfo() as $version => $officeInfo) {
         echo "<h2>Office Professional Plus $version VL</h2>\n";
-        echo "<pre><code>" . officeCommand($officeInfo[0], $officeInfo[1], $host) . "</code></pre>\n";
+        echo "<pre><code>" . officeCommand($officeInfo[0], $officeInfo[1], $host, $port) . "</code></pre>\n";
     }
     echo "<h2>常用激活命令</h2>\n";
     echo "<table><thead><tr><th>命令</th><th>说明</th></tr></thead><tbody>";
-    foreach (osppCommand($host) as $cmd => $desc) {
+    foreach (osppCommand($host, $port) as $cmd => $desc) {
         echo "<tr><td>cscript ospp.vbs $cmd</td>";
         echo "<td>$desc[1]</td></tr>";
     }
diff --git a/src/Route.php b/src/Route.php
index ce0472b..5e65420 100644
--- a/src/Route.php
+++ b/src/Route.php
@@ -28,7 +28,7 @@ if ($url == '/win/json' or $url == '/win-server/json') {
 if ($url == '/' or $url == '/help') {
     $isCli ? showHelpCli($kmsHost, $kmsPort) : showHelpHtml($kmsHost, $kmsPort); // show help message
 } else if ($url == '/office') {
-    $isCli ? showOfficeCli($kmsHost) : showOfficeHtml($kmsHost); // show office commands
+    $isCli ? showOfficeCli($kmsHost, $kmsPort) : showOfficeHtml($kmsHost, $kmsPort); // show office commands
 } else if ($url == '/win' or $url == '/win-server') {
     $kmsKeys = getKeys(($url != '/win'));
     $caption = 'Windows ' . (($url == '/win') ? '' : 'Server ') . 'KMS Keys';