When domains are imported into our system, they are placed in the Expiring section. This section consists of all domains that are either on auction, are in pre-release state or are pending delete. When the domains that are pending delete expire, they are moved to the Expired section. Multiple availability checkers constantly work on this section to find domains that have dropped and are available. However, some drop times are indeterminate, so some domains drop much later than we expect and therefore this section contains both domains that are available for registration and domains that may drop soon.

If you only want to see the available domains in this section, you can easily select the "Available" checkbox in the Advanced Search page.

Screenshot of Available checkbox in Advanced Search Screen