HTTPDNS API Request Rate Limit
For a single user of HTTPDNS, there is no limit on the API request rate by default (for Enterprise Edition only).
For Enterprise Edition users, there is no limit on the API request rate by default.
For free trial users, the request limit is 100 QPS per IP and 1,000 QPS per domain. After the limit is exceeded, packet loss or response failure/delay will occur. We recommend you use Enterprise Edition for your business to avoid being affected by the rate limit. For directions, see Activating HTTPDNS.