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These cookies are for internal use which allows Cloudflare to identify production issues on clients.
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Used by the content network, Cloudflare, to identify trusted web traffic.
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Cloudflare's bot products identify and mitigate automated traffic to protect your site from bad bots. Cloudflare places the __cf_bm cookie on End User devices that access Customer sites that are protected by Bot Management or Bot Fight Mode. The __cf_bm cookie is necessary for the proper functioning of these bot solutions.
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When enabling session affinity with Cloudflare Load Balancer, Cloudflare sets a __cflb cookie with a unique value on the first response to the requesting client. Cloudflare routes future requests to the same origin, optimizing network resource usage. In the event of a failover, Cloudflare sets a new __cflb cookie to direct future requests to the failover pool.
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cf_clearance
Whether a CAPTCHA or Javascript challenge has been solved.
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Sequence rules uses cookies to track the order of requests a user has made and the time between requests and makes them available via Cloudflare Rules. This allows you to write rules that match valid or invalid sequences. The specific cookies used to validate sequences are called sequence cookies.
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cf_ob_info
The cf_ob_info cookie provides information on: The HTTP Status Code returned by the origin web server. The Ray ID of the original failed request. The data center serving the traffic
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![[ad] The Great Fundraising Masterclass, Revolutionise. Dublin and London, September 2026](https://fundraising.co.uk/wp-content/uploads/2026/07/Banner-Ad-728x90-1.png.webp)
They will be responsible for the organisation of a number of events including the Deloitte and Sailors’ Society Cycle 2009, which will take place in and around Southampton on 10 May.![[ad] The Great Fundraising Masterclass, Revolutionise. Dublin and London, September 2026](https://fundraising.co.uk/wp-content/uploads/2026/07/GFM-Series-26-UKF.png.webp)
