fulltiltpoker.com still works here, but a whois lookup does show they've been hijacked:
Domain Name: FULLTILTPOKER.COM
Registrar: SAFENAMES LTD
Whois Server: whois.safenames.net
Referral URL:
http://www.safenames.net
Name Server: NS1.CIRFU.NET
Name Server: NS2.CIRFU.NET
Status: clientDeleteProhibited
Status: clientTransferProhibited
Status: clientUpdateProhibited
Status: serverDeleteProhibited
Status: serverTransferProhibited
Status: serverUpdateProhibited
Updated Date: 15-apr-2011