ドメイン名からIPアドレスを調べる

いっつもwhois検索でググって一番上に出てきたサイト使ってたので．．

[root@sorauta httpd]# host sorauta.net
sorauta.net has address 121.2.243.134
sorauta.net mail is handled by 5 eforwardct.name-services.com.
sorauta.net mail is handled by 5 eforwardct2.name-services.com.
sorauta.net mail is handled by 5 eforwardct3.name-services.com.