Look in Network Admin > Settings > Banned Names. It is just one line so if you have very many, better type them up in notepad first.
The help text under it says:
Users are not allowed to register these sites. Separate names by
spaces.
Just type in all the names you want to reserve for later.
Banned Names should be about fifth or sixth down on the main settings page. Just above “Limited Email Registrations”.
Related Posts:
- WordPress Multisite Multiple child theme
- Programmatically create blogs with dummy content on a WPMU site
- How to individually set WP_DEBUG on a sub-directory multisite?
- Create multiple subdomains for multi-site from a database
- How to map a specific multi-site blog to a folder?
- Built to scale, or worry later?
- Multisite Subdomains result in 403 Forbidden
- multisite htaccess 301 redirects
- using 1 form shortcode (si or cf7) for all multisite sites [closed]
- How to manage multiple domain with different languages on each domain with single wordpress installation?
- Is there any fundamental difference in developing a wordpress multi-network site?
- merging two multisites
- W3 Total Cache Plugin with WP 3 MultiUser [closed]
- Should multi-language site using multi-site architecture have default language in base site?
- Redirect loop (only for multisite network admin)
- favicon and multi site
- Register email as username
- Deleting a user in multisite
- Recover from failed multisite conversion
- Multisite Subdomain Using More Resources Than Others?
- Can I use multisite functions in a single-site installation?
- Cookie nonce is invalid – Multisite
- Multisite setup on VVV with bedrock
- Trouble with switch_to_blog()
- WordPress Multisite prevent direct access to subdomain
- WordPress mutisite migration
- Multisite, multiple domains per site
- delete_user_meta : how to delete all the metadata of a given user (witout SQL)
- Multisite Network Localisation
- Within the database, where is the flag which says that a user has Super Admin rights?
- Can set_transient() be used in multi-site?
- What would you recommend for hosting 10+ individual wordpress websites?
- Switch a single site to a multi-site
- Why can’t I login to my “network sites”?
- migrate a MU sub blog to a single install
- Preferred method of setting user role only works on Main Site in Network
- Create a database for each site created in multisite?
- Adding a existing developed site to a multisite installation of WordPress
- Register submenu on network menu from the subsite
- How can i define the order of blogs in a multisite network manually (like pages)?
- new multisite, old db
- Multisite sub-directories IIS 7.5 change media/uploads location
- How can I hide certain sidebars from some users?
- Create a page for a theme only
- Hosting 2 WordPress websites in /public_html/ & /public_html/subdirectory/ at the same time
- Can’t access Dashboard of a Multisite WordPress. Chrome results in “ERR_TOO_MANY_REDIRECTS”
- How do I get the site url from a Block (within the block editor)
- Strange multisite issue where all sites return same id with get_current_site()
- wp_get_attachment_image_src returns incorrect URL on multisite
- Locking one blog of many in a multi user/blog WordPress installation
- Creating a subdomain network in a subdomain
- How do I disable XML-RPC in WordPress Multisite?
- Multisite – One Site with multiple URLs
- Sub-sub folders of WordPress Multisite subdirectory
- Delete all user’s meta without knowing all the ‘key’
- Allow editors to switch sites (Multisite)
- How to modify wp_config file for set up subdirectory?
- Activation Account Email
- moving tables between multisite installs
- Stylesheet and JS linking error in WP multisite nested path
- Can I run multiple blogs from my local machine
- Trouble with SQL SELECT inside switch_to_blog()
- How to automatically translate plugin using translate.wordpress.org
- May I do multiple micro-sites with different themes in a single wordpress without subdirectory nor subdomain separation?
- Multisite htaccess file causing segfault (Segmentation fault 11)
- Multisite Smtp Server
- Images uploaded after adding multisite do not get loaded in any domain of the multisite network
- Migrating from domain mapping plugin to native domain mapping
- When hooking wp-cron to system
- “Multisite support is not enabled.” After Multisite Config Changes
- WordPress network, add extra directory to subsite urls
- Add new sites on the same level as the parent URL in a multisite
- Register a user only to the root blog – WP Multisite
- Update Same Contents on every Page
- Search returns “Nothing Found” on a sub directory
- WooCommerce API Returns 401
- Define default settings for new sites on multisite network with mu-plugin
- Users getting linked unwanted to main mu in WordPress multisite (WPMU)
- Multisite + wp_mail – Route Via Site Conditionally
- WordPress automatic Login on other page?
- Multisite: How to bypass wpmu_signup_user_notification and add my own notification logic?
- Changed singlesite to multisite, but new site shows Maintenance
- MU domain mapping without using a plugin
- Multisite authorization error 401
- Multisite Demo Data for New Site
- Responsive Wordress Site – Serve different post types to each device
- How create a multisite setup with “phantom” accounts and passwords?
- is there a if multisite have posts function?
- Multisite – mix sites that use subdomains with sites that use paths
- How to apply specific plugins to affect all sites (Multisite Network)
- Is there a way to have wordpress 301 versus 302 urls by default?
- Pick your brain on wp-config.php if statement for multisite
- first load of the page gives 404 error
- Some Subdomains on a Multisite Install Not Found
- personal_options hook on WordPress multisite
- Multi site root site installed on subdomain, with child sites as subdirectories
- Integrating WordPress for blog and other content pages in a web app
- WordPress Multisite restict user access
- Multisite admin panel not working after the update
- WordPress Network / Multisite login to one site allow access to all