If you count sub-domains on Alexa top domains here's a few big companies in there like iStockPhoto and Debenhams - discover.istockphoto.com store.xda-devel

If you count sub-domains on Alexa top domains here's a few big companies in there like iStockPhoto and Debenhams - discover.istockphoto.com store.xda-developers.com support.sharebeast.com finance.debenhams.com poy.tsn.ca m.nzherald.co.nz blog.telmex.com business.un.org coinad.com status.formstack.com indulgy.com all-that-is-interesting.com pbh2.com edoqs.com grandascent.com locations.paychex.com pagelines.com danjur.com mrmoneymustache.com We've got some historical stats for them here but we only started tracking in January - https://trends.builtwith.com/hosting/Digital-Ocean https://trends.builtwith.com/hosting/Digital-Ocean Not sure if this is of any interest but this is where they are getting new customers from (from most to least) Linode Softlayer Rackspace Amazon GoDaddy