well unless i'm misreading this, adbf.com still belongs to whomever is the "owner" of it as previous, but i'm guessing they either didn't renew their hosting package or whoever hosted it is no longer in service:
Domain Name: ADBF.COM
Registrar: SPOT DOMAIN LLC DBA DOMAINSITE.COM
Whois Server: whois.domainsite.com
Referral URL:
http://www.domainsite.com Name Server: NS1.DSREDIRECTION.COM
Name Server: NS2.DSREDIRECTION.COM
Status: clientDeleteProhibited
Status: clientRenewProhibited
Status: clientTransferProhibited
Status: clientUpdateProhibited
Updated Date: 31-aug-2007
Creation Date: 31-jul-2002
Expiration Date: 31-jul-2008