The Alliance of American Football (AAF) was a professional football league that played part of a football season in 2019. According to Sports Illustrated, AAF filed for bankruptcy in 2019. The league used the valuable AAF.com domain name for its website while it was operational and for sometime after its bankruptcy. Whois records now show that AAF.com expired, and the domain name is now in pending delete status.
Here’s a screenshot of the current Whois record, courtesy of DomainTools: