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Change Domain Name
Hello- I am new to the sites feature and hastily created a domain name I cannot use (test1234.force.com). Is there any way at all to change this?

You cannot change it, but Salesforce support can. You will need to open a case with them and they can take care of it. If they tell you otherwise, they are lying and you should insist on escalation until it happens.
Agreed with MaxPowerForce log a case with support and provide them your new Domain name.They can get ot changed for you.

Thank you all!