DNS record error

DNS records for domain.com look like this:

domain.com    IN  SOA   ...
@             IN  NS    ns1.hoster.com
@             IN  NS    ns2.hoster.com
@             IN  MX 10 mx.yandex.ru.
domain.com    IN  A     89.89.89.89
*.domain.com  IN  A     89.90.90.90

But domain.com and blog.domain.com still aren't resolved. What's a problem?