loading from master file failed: unknown class/type

[Security Admin (NetSec)]

Sunday night brain fart.  Having trouble configuring a hosts files.  I receive an "ns1 named[27823]: zone prana.us/IN/external: loading from master file pranaustwc.hosts failed: unknown class/type" error.

The "pranaustwc.hosts" file is:

# cat pranaustwc.hosts
ORIGIN .
$TTL 3600       ; 1 hour
prana.us                IN SOA  ns1.netsecdesign.com. secadmin.netsecdesign.com. (
                                2010031403 ; serial
                                3600       ; refresh (1 hour)
                                1800       ; retry (30 minutes)
                                1209600    ; expire (2 weeks)
                                900        ; minimum (15 minutes)
                                )
                        NS      ns1.netsecdesign.com.
                        NS      ns2.netsecdesign.com.
                        NS      ns1.webworldinc.net.
                        MX      5       mailgate.netsecdesign.com.
                        MX      20      portus.netsecdesign.com.
                        A       67.52.187.27
$ORIGIN prana.us.
www                     A       67.52.187.27
webmail                 CNAME   webmail.netsecdesign.com.
prana.us.               IN TXT  "v=spf1 mx ptr ipv4:67.52.187.21 ipv4:67.52.187.22 ~all"
mailgate.netsecdesign.com.      IN TXT  "v=spf1 a -all"
portus.netsecdesign.com.        IN TXT  "v=spf1 a -all"


any help would be appreciated.  Thanks in advance!!
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