I'd register a pTLD with the INAIC.
After I receive the message bellow:
"Thank you for your message to the Internet Names Authorization & Information Center (INAIC).
If you want to register domains for yourself, you need at least 2 DNS servers, for you domain names.
If you would like others to on-line register domain names under your TLD, then you also need domain name registry software."
OK! I have few computers, a good and stable connection But I don't know how to create that servers.