diff --git wp-admin/includes/class-wp-ms-sites-list-table.php wp-admin/includes/class-wp-ms-sites-list-table.php
index 1afb0c43c..b01d565cd 100644
--- wp-admin/includes/class-wp-ms-sites-list-table.php
+++ wp-admin/includes/class-wp-ms-sites-list-table.php
@@ -108,9 +108,9 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 		if ( empty($s) ) {
 			// Nothing to do.
 		} elseif ( preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/', $s ) ||
-					preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s ) ||
-					preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s ) ||
-					preg_match( '/^[0-9]{1,3}\.$/', $s ) ) {
+		           preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s ) ||
+		           preg_match( '/^[0-9]{1,3}\.[0-9]{1,3}\.?$/', $s ) ||
+		           preg_match( '/^[0-9]{1,3}\.$/', $s ) ) {
 			// IPv4 address
 			$sql = $wpdb->prepare( "SELECT blog_id FROM {$wpdb->registration_log} WHERE {$wpdb->registration_log}.IP LIKE %s", $wpdb->esc_like( $s ) . ( ! empty( $wild ) ? '%' : '' ) );
 			$reg_blog_ids = $wpdb->get_col( $sql );
@@ -225,11 +225,13 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 	 */
 	public function get_columns() {
 		$sites_columns = array(
-			'cb'          => '<input type="checkbox" />',
-			'blogname'    => __( 'URL' ),
-			'lastupdated' => __( 'Last Updated' ),
-			'registered'  => _x( 'Registered', 'site' ),
-			'users'       => __( 'Users' ),
+			'cb'              => '<input type="checkbox" />',
+			'blog_id'         => __( 'ID' ),
+			'blogname'        => __( 'URL' ),
+			'lastupdated'     => __( 'Last Updated' ),
+			'registered'      => _x( 'Registered', 'site' ),
+			'users'           => __( 'Users' ),
+			'activated_theme' => _x( 'Activated Theme', 'site' ),
 		);
 
 		if ( has_filter( 'wpmublogsaction' ) ) {
@@ -241,8 +243,8 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 		 *
 		 * @since MU
 		 *
-		 * @param array $sites_columns An array of displayed site columns. Default 'cb',
-		 *                             'blogname', 'lastupdated', 'registered', 'users'.
+		 * @param array $sites_columns An array of displayed site columns. Default 'id', 'cb',
+		 *                             'blogname', 'lastupdated', 'registered', 'users', 'activated theme'.
 		 */
 		return apply_filters( 'wpmu_blogs_columns', $sites_columns );
 	}
@@ -252,6 +254,7 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 	 */
 	protected function get_sortable_columns() {
 		return array(
+			'blog_id'     => 'blog_id',
 			'blogname'    => 'blogname',
 			'lastupdated' => 'lastupdated',
 			'registered'  => 'blog_id',
@@ -269,18 +272,18 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 	public function column_cb( $blog ) {
 		if ( ! is_main_site( $blog['blog_id'] ) ) :
 			$blogname = untrailingslashit( $blog['domain'] . $blog['path'] );
-		?>
+			?>
 			<label class="screen-reader-text" for="blog_<?php echo $blog['blog_id']; ?>"><?php
 				printf( __( 'Select %s' ), $blogname );
-			?></label>
+				?></label>
 			<input type="checkbox" id="blog_<?php echo $blog['blog_id'] ?>" name="allblogs[]" value="<?php echo esc_attr( $blog['blog_id'] ) ?>" />
 		<?php endif;
 	}
 
 	/**
-	 * Handles the ID column output.
+	 * Handles the checkbox column output.
 	 *
-	 * @since 4.4.0
+	 * @since 4.3.0
 	 * @access public
 	 *
 	 * @param array $blog Current site.
@@ -333,7 +336,7 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 			switch_to_blog( $blog['blog_id'] );
 			echo '<p>';
 			printf(
-				/* translators: 1: site name, 2: site tagline. */
+			/* translators: 1: site name, 2: site tagline. */
 				__( '%1$s &#8211; %2$s' ),
 				get_option( 'blogname' ),
 				'<em>' . get_option( 'blogdescription ' ) . '</em>'
@@ -460,6 +463,29 @@ class WP_MS_Sites_List_Table extends WP_List_Table {
 	}
 
 	/**
+	 * Handles the checkbox column output.
+	 *
+	 * @param array $blog Current site.
+	 */
+	public function column_blog_id( $blog ) {
+		echo $blog['blog_id'];
+	}
+
+	/**
+	 * Handles the Activated Theme column output.
+	 *
+	 * @param array $blog Current site.
+	 */
+	public function column_activated_theme( $blog ) {
+		$activated_theme = get_blog_option( $blog['blog_id'], 'current_theme' );
+		if ( empty( $activated_theme ) ) {
+			$activated_theme = _x( 'No theme activated.', 'site' );
+		}
+
+		echo $activated_theme;
+	}
+
+	/**
 	 *
 	 * @global string $mode
 	 */