"We have analyzed the domains of Fortune 500 companies, to gain insight into their domain preferences. As data were gathered, some interesting facts also got revealed. For example, 14 out of the first 100 registered domains are being used as the official websites of certain Fortune 500 companies today.
494 out of the Fortune 500 companies, which roughly represent 99%, use domains with .com extensions. We see on an interesting side-note that all three companies that use .net extensions operate in the health industry. The extensions that appear only once on the list are .org, .xyz and .technology. An investment consultancy organization TIAA has preferred to use tiaa.org. 22nd on the list and Google’s parent company Alphabet’s name goes well with its domain, abc.xyz. 374th on the list, DXC Technology similarly complements its name by using dxc.technology domain."
494 out of the Fortune 500 companies, which roughly represent 99%, use domains with .com extensions. We see on an interesting side-note that all three companies that use .net extensions operate in the health industry. The extensions that appear only once on the list are .org, .xyz and .technology. An investment consultancy organization TIAA has preferred to use tiaa.org. 22nd on the list and Google’s parent company Alphabet’s name goes well with its domain, abc.xyz. 374th on the list, DXC Technology similarly complements its name by using dxc.technology domain."
https://blog.dofo.com/fortune-500-domain-names/