[tommy_axle]

I see a service like this as being in the ip lookup API category (like ipinfo.io) but I wanted to mention that for this (and IP lookup, captcha etc) I would expect that if the service is down then you allow the registrations then review later, and not simply prevent all registrations.

[choraria]

Interesting. I think you're right (on the API category this falls under). Also love the approach on keeping this API async. Makes so much more sense that way.