My subdomain can not run in internet

[motokochan]

As joximu was trying to say, usually ispCP Omega will manage DNS and add the subdomain when it's created.

You might be using different servers for DNS than your ispCP Omega server. If this is the case, you need to make sure to add the correct record to that server.

If you respond with the domain, I can try to see if you are using an external service or if you are using the ispCP Omega server.