ms_network_not_found
Action Hook: Fires when a network cannot be found based on the requested domain and path.
Source: wp-includes/ms-load.php:355
ms_site_not_found
Action Hook: Fires when a network can be determined but a site cannot.
Source: wp-includes/ms-load.php:414
ms_not_installed()
Function: Displays a failure message.
Source: wp-includes/ms-load.php:462
get_current_site_name()
Function: This deprecated function formerly set the site_name property of the $current_site object.
Source: wp-includes/ms-load.php:523
wpmu_current_site()
Function: This deprecated function managed much of the site and network loading in multisite.
Source: wp-includes/ms-load.php:542