It often is the case that posting the actual information as-is, including names and/or addresses, will actually help answering the question.
These are some top reasons that come to mind:
It's easy to introduce inconsistencies by mistake when obfuscating information. When that happens, it just wastes everyone's time working out something that is not even part of the real question.
Someone who is attempting to answer the question can have a quick look for themselves and collect and/or verify information, reducing the amount of effort compared to trying to the same information through a number of comment roundtrips.
Determining if your specific question is such a case is often very difficult when you don't already know the answer.
I think you can expect some amount of scepsis just based on including obfuscated information.
If you still decide to post obfuscated information, at least check and double-check that that everything is consistent and do make it obvious! It's all too common that people replace their own domain names or IP addresses for actual domain names and addresses in use by others (as in your question here!).
Regarding IP addresses and domain names specifically there are reserved names and ranges for the purpose of examples and documentation that won't be mistaken for someone else's addresses or names.
Second level domains: