Sending large amount of Traffic to Cloudflare Public DNS


Are there any limitations to be aware off when sending large amounts of traffic to Cloudflare’s public DNS

Are there rate-limiting numbers to be aware of?

Is there a possibility that sending too much traffic (legitimate user traffic) could trigger Cloudflare’s recursive servers to rate-limit or block DNS traffic for a period of time?

Note : This is specifically for rate limiting on recursive DNS, not on Authoritative DNS


While Cloudflare doesn’t mind organizations using, it’s always good to contact them for your particular use case: resolver(at)cloudflare(dot)com


I sent an email and got a response from the cloudflare email you provided. Thank you!

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