No. You can only teleport within the same domain
You would ask them to send you a gift choose that domain and then start over in that domain. you can't bring your old city with you. If it is full it will not let you.
If a particular domain appears absent from the domain list, it means that that domain is currently full. We are currently working to remove unused player cities from servers in order to make room new players. We apologize for the inconvenience and thank you for your patience and understanding in this matter. Please feel free to report any other issues you may encounter in your rise to power! Thank you for choosing Kingdoms of Camelot! Kingdoms of Camelot