Battlefield 3 and 4's servers are still running and are very much active. There's more optimal ways of playing these games but it's so cool to be able to still play them
Battlefield Bad Company 2 on Xbox 360 in 2023 - YouTube
Amazon.com: Battlefield 3 - Limited Edition - Xbox 360 : Video Games
Battlefield 3: Now the console server browser has far more power! | Hard and Soft Gaming