Summary

The website indicates an issue with Cloudflare configuration: using a CNAME DNS record spanning multiple Cloudflare accounts is a security violation. Users attempting to manually point a CNAME record to their R2 bucket should instead utilize a custom domain.

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 104.26.15.179, A 172.67.75.65, A 104.26.14.179

Dates

Created 2025-11-09

Updated 2026-01-29

Summarized 2026-03-01