To date, the largest ICO (initial coin offering) in terms of funding raised is a company that operates on a new gTLD domain name. A company called Block.One, which utilizes a .One domain name, raised over $4 billion in its ICO, according to an article in CNBC:
A Cayman Islands start-up has raised $4 billion, eclipsing the world’s biggest initial public offerings on stock exchanges this year. But its flagship product is not even live yet. https://t.co/QUpQMbIhtq
— CNBC (@CNBC) June 1, 2018
The $4 billion that was raised outpaces every stock exchange IPO (initial public offering) and other ICOs.
The Block.One domain name was created in August of 2016. Using DomainTools, I can see that the domain name was initially registered by Andrew Bliss, the CFO at Block.One. The domain name was later registered under privacy proxy.
I am not sure who owns the matching BlockOne.com domain name as it is registered under Whois privacy proxy and the domain name does not seem to resolve. Interestingly, both Block.One and BlockOne.com have Amazon (awsdns) nameservers, but the actual nameservers are different. This could be coincidental. It would be smart if the company acquired the matching BlockOne.com domain name, but it is a bit peculiar that the domain name is not resolving or forwarding if the company was able to secure it.
One thing you will note is that the branding is Block.One rather than Block or Block One. This should be helpful in ensuring people understand that Block.One is the brand and url.