ELI5: How i can actually buy and own a web domain permanently? ICANN does not allow permanent domain names. therefore no. you can. How to Buy a Domain Name. This wikiHow teaches you how to buy a domain name for a website. Go to a registration site. Open a web browser and navigate to. I would just set the domain on auto renew or add a ton of money to your . For. com, 10 years is the maximum one can register a domain name.