@ in soa localhost. root 1 3H 15M 1W 1D
  ns localhost.

schoolserver	IN	A	18.85.46.29
school		IN	CNAME	schoolserver
www		IN	CNAME	schoolserver
ntp		IN	CNAME   schoolserver
time		IN	CNAME	schoolserver
presence	IN	CNAME	schoolserver
xs		IN	CNAME	schoolserver
library		IN	CNAME	schoolserver
conference.schoolserver	IN	CNAME	schoolserver