続・INTERNET Watch: グーグル、Gmailなどが独自ドメインで利用できるサービスの日本語版を開始

No-IP.comのサポートから返事が来たよ．

It appears you have been able to successfully add a few subhosts to your domain. Did you still need any assistance with this?

ちゃんと読めよ! (ﾉﾟДﾟ)ﾉ彡┻┻