Open CDN detection tool
cloudflare.com CDN Detection: Possible Cloudflare Usage
CNAME, HTTP header, and ASN signals indicate that cloudflare.com may be using Cloudflare, with 45% confidence. Review the evidence and latest check time.
Checked at: 8/26/2026, 6:40:13 PMPossible layered CDN
Evidence timeline
HEADER
header: x-served-byHEADER
header: cf-rayMethodology and limitations
Detection results are based on cross-analysis of public DNS, HTTP response headers, and ASN signals. The current determination from public data has not been cross-validated with real probes from multiple regions; confidence indicates evidence strength, not statistical accuracy.