Changing an origin in a data file
Use the $ORIGIN command to change the domain origin in a data file.
The line starts in column 1 and is followed by a domain origin.
This is useful for putting more than one domain in a data file.
Only use $ORIGIN to change domains within a particular zone. For example, you might change domains to a subdomain within the current zone. For example:
$ORIGIN mynet.COM [assorted domain data...] $ORIGIN sub.mynet.COM [assorted domain data...]