Domain Name With Ampersand. If you absolutely must use it in your URL use the code. Ampersand is used as a delimiter for an entity in standard HTML so inserting it could lead to a validation error and failure to load the page.
Regardless of the extension all domain names must follow the same character rules. This includes at the beginning or end of the name. A little known fact is that you CAN have multiple dashes right next to each other.
Use to make sure the word is always included in the generated domain name.
However the email address you create for a distribution group or shared mailbox cannot use the sign. By Ecenica 6th March 2015 6th March 2015. Domain names cannot contain commas. The hostname is subject to the restrictions of RFC 952 and the slight relaxation of RFC 1123.