nbs-test.com.		30 IN SOA ns.nbs-system.com. root.nbs-system.com. (
				2023102701 ; serial
				600        ; refresh (10 minutes)
				300        ; retry (5 minutes)
				604800     ; expire (1 week)
				600        ; minimum (10 minutes)
				)

Mail exchangers:
nbs-test.com.		30 IN MX 10 mx1.nbs-test.com.
nbs-test.com.		30 IN MX 5 mx4.nbs-system.com.

Name servers:
nbs-test.com.		30 IN NS ns0.nbs-system.com.
nbs-test.com.		30 IN NS ns1.nbs-system.com.