Yes, you need to have internet access to create your SpeechProfile and activate your license.
in some corporate environment, certain ports might be blocked for security reason, the IT administrator has to allow access to the following IP in order for SpeechExec V11 to work.
https://license.speechexec.com
IP : 13.69.68.7
ports: 80, 443
Note:
In case of a network error, you can use SpeechExec without internet connection for 7 days. When that time period expires, SpeechExec can only be used in online mode.