What the cf_use_ob cookie does
The cf_use_ob cookie informs Cloudflare to fetch the requested resource from the Always Online cache on the designated port. Applicable values are: 0, 80, and 443. The cf_ob_info and cf_use_ob cookies are persistent cookies that expire after 30 seconds.
Who sets it
Consent category: functional
Functional cookies remember a choice the visitor made, such as a language, a region or a layout preference. They are not essential, so visitors in the EU must be able to decline them, and a site should not set them before consent.
| Name | cf_use_ob |
|---|---|
| Category | Functional |
| Lifetime | session |
| Set by | Cloudflare |
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From the Conzent cookie database, last updated 2026-10-10. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.