Reverse GeoLocation

hi OSM…
I need to get reversed geolocation to openstreetmap.
But when I tried it, i think my ip has been blocked.
is there any limitation to do it?
how many hits per second is allowed?

thanks

What geolocation service did you use exactly?

Was it https://wiki.openstreetmap.org/wiki/Nominatim ?

If it is Nominatim, read the Usage Policy (linked from the page mentioned by stephan75