Puzzling visitors from Digital Ocean

Hello. I would appreciate opinion on issue that has been puzzling me for a while.

I run small website out of hobby, football betting statistics, and I have installed StatCounter. Since long time ago, I noticed strange visits, that do not seem like "human" visits:

• ISP is always Digital Ocean
• IPs are different, so are locations; in ~90% of cases, location is in USA, but sometimes I see Singapore, Amsterdam, etc.
• OS is almost always Linux with "unknown" browser, vey few...

Puzzling visitors from Digital Ocean

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