Summary

Cloudflare hosts are configured globally for all accounts, but this restriction blocks the creation of CNAME records via Cloudflares. Any attempt to manually point a CNAME DNS record to an R2 bucket is technically prohibited due to the security policies enforced by the platform. To configure these records, a user must switch to creating their own custom domain on Cloudflares.

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 104.26.3.2, A 172.67.69.128, A 104.26.2.2

Dates

Created 2025-11-07

Updated 2026-01-27

Summarized 2026-03-22