diff --git a/admin/rt-transcoder-functions.php b/admin/rt-transcoder-functions.php
index a14261b1..bc33548f 100755
--- a/admin/rt-transcoder-functions.php
+++ b/admin/rt-transcoder-functions.php
@@ -1022,3 +1022,17 @@ function get_server_var( $server_key, $filter_type = FILTER_SANITIZE_STRING ) {
 	}
 	return $server_val;
 }
+
+/**
+ * Get local ip addresses for block.
+ *
+ * @return array
+ */
+function rtt_get_blacklist_ip_addresses() {
+	// If custom API URL added then don't block local ips.
+	if ( defined( 'TRANSCODER_API_URL' ) ) {
+		return array();
+	}
+
+	return array( '127.0.0.1', '::1' );
+}
diff --git a/admin/rt-transcoder-handler.php b/admin/rt-transcoder-handler.php
index 8186c8c7..630f5216 100755
--- a/admin/rt-transcoder-handler.php
+++ b/admin/rt-transcoder-handler.php
@@ -167,7 +167,7 @@ public function __construct( $no_init = false ) {
 						}
 
 						/* Do not let the user to upload non supported media types on localhost */
-						$blacklist   = array( '127.0.0.1', '::1' );
+						$blacklist   = rtt_get_blacklist_ip_addresses();
 						$remote_addr = rtt_get_remote_ip_address();
 						if ( ! in_array( wp_unslash( $remote_addr ), $blacklist, true ) ) {
 							add_filter( 'rtmedia_plupload_files_filter', array( $this, 'allowed_types' ), 10, 1 );
@@ -494,7 +494,7 @@ public function save_api_key() {
 
 		if ( ! empty( $apikey ) && is_admin() && ! empty( $page ) && ( 'rt-transcoder' === $page ) ) {
 			/* Do not activate transcoding service on localhost */
-			$blacklist   = array( '127.0.0.1', '::1' );
+			$blacklist   = rtt_get_blacklist_ip_addresses();
 			$remote_addr = rtt_get_remote_ip_address();
 			if ( in_array( wp_unslash( $remote_addr ), $blacklist, true ) ) {
 				$return_page = add_query_arg(