Remember the website named blockchain.com, they have this hold on the blockchain trademark and they have now partnered with unstoppable domains for this domain extension. So now you can buy the blockchain domain for your brand. If you can check the web3 companies and the brands they tend to be into this for some time and would be making use of the domains like these. You can find out some of such extensions in the unstoppable domains. 

You can already buy the .eth and the .nft domains. You would get some really good .crypto domains. Some really good domains with wallet extension can be another option that you would be trying out too. I would say for those who want to make use of the domain extension. I think any project into the web3 is going to benefit out of such extension. I would say people who are working with games and the metaverse would also happen to find the value in here. 

As you can see the cost is starting from 10 USD all the way to 300 USD or more. I have found out that the cost would rise for specific set of the keywords. More cost for the domains the more they are going to get the business footprint too. So the top companies would be buying the blockchain domains in upcoming times. 

You can check out the Unstoppable Domains Announcement on Blockchain extension.