Cboe has identified a DNS issue impacting the cboe.com website and has made appropriate changes to resolve the issue. The changes to resolve the issue will be in effect for all customers at 1:45 PM ET. Until then, some customers may experience sporadic issues accessing the cboe.com website. Customers that do experience issues are advised to call the Cboe Trade Desk, Cboe OSC, or CFE Trade Desk directly for immediate support.
Cboe Trade Desk
Cboe Operations Support Center (OSC)
CFE Trade Desk