I think they are down, they are registered through 2009.
Domain ID:D1551571-LROR
Domain Name:CPAC.ORG
Created On:18-Mar-1998 05:00:00 UTC
Last Updated On:27-Dec-2005 23:04:14 UTC
Expiration Date:17-Mar-2009 05:00:00 UTC
Sponsoring Registrar:TLDs L.L.C. d/b/a SRSPlus (R78-LROR)
Status:OK
Registrant ID:5267683-SRSPLUS
Registrant Name:American Conservative Un
Registrant Organization:-
Registrant Street1:1007 Cameron Street
Registrant Street2:
Registrant Street3:
Registrant City:Alexandria
Registrant State/Province:S1
Registrant Postal Code:22314
Registrant Country:US
Registrant Phone:+1.111111111
Registrant Phone Ext.:
Registrant FAX:
Registrant FAX Ext.:
Registrant Email:internic@conservative.org
Admin ID:5267683-SRSPLUS
Admin Name:American Conservative Un
Admin Organization:-
Admin Street1:1007 Cameron Street
Admin Street2:
Admin Street3:
Admin City:Alexandria
Admin State/Province:S1
Admin Postal Code:22314
Admin Country:US
Admin Phone:+1.111111111
Admin Phone Ext.:
Admin FAX:
Admin FAX Ext.:
Admin Email:internic@conservative.org
Tech ID:5267683-SRSPLUS
Tech Name:American Conservative Un
Tech Organization:-
Tech Street1:1007 Cameron Street
Tech Street2:
Tech Street3:
Tech City:Alexandria
Tech State/Province:S1
Tech Postal Code:22314
Tech Country:US
Tech Phone:+1.111111111
Tech Phone Ext.:
Tech FAX:
Tech FAX Ext.:
Tech Email:internic@conservative.org
But if there were just down, I would still be able to resolve www.cpac.org into a numeric ip, with ping, etc.
Interesting that it is registered to an email at conservative.org which is the American Conservative Union, whose web site is up.