---
title: WordPress Multisite Without a Domain Mapping Plugin
date: 2013-02-08T13:26:02+00:00
modified: 2016-12-12T21:16:32+00:00
image:: https://kaspars.net/wp-content/uploads/2013/02/wordpress-multisite-top-level-domains.png
permalink: https://kaspars.net/blog/wordpress-multisite-without-domain-mapping
post_type: post
author:
  name: Kaspars
  avatar: https://reverse.kaspars.net/gravatar/avatar/92bfcd3a8c3a21a033a6484d32c25a40b113ec6891f674336081513d5c98ef76?s=96&d=mm&r=g
post_tag:
  - How to
category:
  - WordPress
---

# WordPress Multisite Without a Domain Mapping Plugin

Here is a quick tip — **you don’t need to use a domain mapping plugin to have a WordPress Multisite with top-level domains and/or sudomains**. WordPress allows you to change a sub-domain to a top level domain once you have added the site:

![WordPress Multisite Top Level Domain Support](https://kaspars.net/wp-content/uploads/2013/02/wordpress-multisite-domain-no-mapping.png?strip=all&quality=90&resize=982,685)

The only important thing is to set the `COOKIE_DOMAIN` to something empty an empty string in your `wp-config.php`:

```
define('COOKIE_DOMAIN', '');
```

otherwise WordPress [will always set it](http://core.trac.wordpress.org/browser/trunk/wp-includes/ms-default-constants.php?rev=21881#L75) to your network’s `$current_site->domain` and you won’t be able to login into any of the other sites.