You don't have to create the domain, you can create the delegation within the uscc.com
zone, as you have above. The uscc.com
zone presumably has an SOA record (not shown above), and you're really delegating the zone gtm.newsimota.prov.uscc.com
. I don't know if the CNAME of newsimota-prov.uscc.com
will work as you want, though. You'd have to test. But the delegation of gtm.newsimota.prov.uscc.com
If you are concerned with traffic interruption, I suggest you run tests with some other non-production domains so you are comfortable with how delegation works... Particularly with that CNAME, which I suspect will only work for that hostname (rather than the whole domain), but again, you'll need to test.