Anywhere/everywhere that there are paginated results (Block List/Allow List, Sites, etc.), there should be the ability to specify how many results are on each page, with the option also for "All" to see all results on the same page if needed.

Ctrl+F in your browser is usually more efficient and feature-rich than any of the built-in "Search" features, and it becomes a HUGE pain when you have hundreds or thousands of entries, resulting in dozens/hundreds of pages to look through.