threeclass.net.		30 IN SOA threeclass.net. postmaster.threeclass.net. (
				1391571609 ; serial
				3600       ; refresh (1 hour)
				1800       ; retry (30 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

threeclass.net.		30 IN A	202.74.17.144

Mail exchangers:
threeclass.net.		30 IN MX 5 alt2.aspmx.l.google.com.
threeclass.net.		30 IN MX 5 alt1.aspmx.l.google.com.
threeclass.net.		30 IN MX 10 aspmx2.googlemail.cmo.
threeclass.net.		30 IN MX 10 aspmx3.googlemail.cmo.
threeclass.net.		30 IN MX 1 aspmx.l.google.com.

Name servers:
threeclass.net.		30 IN NS dns01.muumuu-domain.com.
threeclass.net.		30 IN NS dns02.muumuu-domain.com.