[CentOS] DNS trouble (little, but i need some help)

HI , i have a DNS trouble , wish you could help me, maybe it's a bit mistake of mine, but i don't know what could it be, i'm trying to configure phpnuke, and i want the URL http://portal.misitio.cl points to /var/www/nuke, that's ok with apache virtualhost, but in DNS , i'm trying to do from anoother server

$host portal.misitio.cl Host portal.misitio.cl not found: 3(NXDOMAIN)

here its my 2 file 227.77.145.in-addr.arpa.hosts and /var/named/misitio.cl.hosts

hope you could help me

Thanks

/var/named/227.77.145.in-addr.arpa.hosts

227.77.145.in-addr.arpa. IN SOA ns.misitio.cl. webmaster.misitio.cl. ( 1162314675 10800 3600 604800 38400 ) 227.77.145.in-addr.arpa. IN NS ns.misitio.cl. 235.227.77.145.in-addr.arpa. IN PTR ns.misitio.cl. 235.227.77.145.in-addr.arpa. IN PTR www.misitio.cl. 235.227.77.145.in-addr.arpa. IN PTR mail.misitio.cl. 235.227.77.145.in-addr.arpa. IN PTR portal.misitio.cl. 235.227.77.145.in-addr.arpa. IN PTR misitio.cl.

/var/named/misitio.cl.hosts

misitio.cl. IN SOA ns.misitio.cl. webmaster.misitio.cl. ( 1162314305 10800 3600 604800 38400 ) misitio.cl. IN NS ns.misitio.cl. ns.misitio.cl. IN A 145.77.227.235 mail.misitio.cl. IN A 145.77.227.235 www.misitio.cl. IN A 145.77.227.235 portal.misitio.cl. IN A 145.77.227.235 misitio.cl. IN A 145.77.227.235 misitio.cl. IN MX 10 mail.misitio.cl.