In brief:

We provide the customer with an opportunity of managing blacklists and whitelists on the network perimiter with the API (Application Programming Interface).

In detail:

The Qrator Labs network can work as a powerful remote firewall which filters the traffic from the blocked users on its perimeter. The Qrator Labs API can be integrated with your authentication system, database or device monitoring service. Using the API, you can grant or restrict access to your website for the visitors with certin IP addresses and receive detailed statistics on your website traffic from the Qrator Labs network.

You can find the technical documentation for this service here.