Question 1

Do I need an API key to use the dnsfyi API?

Accepted Answer

No. The dnsfyi REST API is free to use without registration or an API key for standard rate limits. Heavy users who need higher throughput can contact us for elevated limits.

Question 2

What is the API rate limit?

Accepted Answer

Standard rate limits are applied per IP: 60 requests per minute for most endpoints, 10 requests per minute for resource-intensive endpoints (360° audit, subdomain finder). Rate limit headers are included in all responses.