The "domains" such as co.nr and the others are not ACTUAL domains, they are subdomains, which is exactly what this website offers with the hosting account. Sites like co.nr only shorten your URL to make it easier to type and remember. Not only do you have to deal with annoying pop-ups and go through a ton of steps to get a "domain" that is really a sub domain on these sites, but some of them even require you buy hosting or pay for it. If you want a domain name, your best bet is probably to pay for one. Sometimes you can find sites on the internet where you can register your own domain name for as little as $1.99. You can register a .org domain for $1.80 at https://xisto.com/. There are also sites out there where you can get a domain free, but you have to sign up for a bunch of offers, or post a ton of messages to get them.