Can't ping the domain

Good day all,

i have a question to all of you guys.

i have new domain let say vepuchiro.co.id

i have already create new zone in DNS Server.

in this zone (vepuchiro.co.id) i create A Host with name "www"

when i ping "www.vepuchiro.co.id" it resolved successfull

but when i ping "vepuchiro.co.id" not resolved

whats wrong? what shoul i do?

Thanks before :)