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CloudFlare Checker written in Go

Results 2 cf-check issues
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Even after updating db/prefixes.txt cf-check treated some addresses as not part of their subnet (i.e. 188.114.96.0 not recognized as part of 188.114.96.0/20). Used ParseCIDR and Contains to mitigate this issue

Whether there is an API like this: Provide an IP address and return whether it is a Cloudflare node or not?