There might be an issue with information leakage.

[Co5mos]

Because these query interfaces all carry an API key, there's a high likelihood of the key being misused.

e.g
Shodan

[Lissy93]

Thanks, will get that fixed

[klisza1993]

as well as local infrastructure leakage. Your actual IPs leaking while hosting, i know its an IP. but if you put it behind CloudFlare, then cf make no sense :)