Summary

The provided text highlights a critical restriction within Cloudflares' security policy that forbids users from configuring the host as a CNAME record across multiple accounts. Because this configuration is prohibited, any individual attempting to manually point a DNS record directly to a R2 bucket must adhere to a strict set of requirements. This rule necessitates the use of a custom domain rather than standard CNAME settings, effectively ensuring that the intended host relationship is maintained within the managed environment.

Title

CNAME Cross-User Banned | Cloudflare

Description

CNAME Cross-User Banned | Cloudflare

Keywords

page, website, security, more, details, custom, domain, cookies, error, cross, user, part, network, host, accounts, policy, https

NS Lookup

A 104.21.93.126, A 172.67.209.227

Dates

Created 2026-04-13

Updated 2026-04-14

Summarized 2026-04-27