This document describes how to access and query the Spamhaus Passive DNS API.

Please note all API calls will require HTTPS. Unsecure HTTP will generate an additional HTTP 301 redirect response increasing latency, and lowering the response time.

The following documentation covers all features of the Spamhaus Passive DNS service. Depending on account type, there may be limits in the type of searches that can be performed and query volume. Please see the API Restrictions chapter for more details.