This is a small playground that displays a few TLS headers, like JA4 fingerprint, that are generated when your user-agent makes the TLS handshake with CloudFront, the CDN that serves this site.
| Header | Value |
|---|---|
| CloudFront-Viewer-Country | US |
| CloudFront-Viewer-Country-Region | VA |
| CloudFront-Viewer-City | Ashburn |
| CloudFront-Viewer-Latitude | 39.04690 |
| CloudFront-Viewer-Longitude | -77.49030 |
| CloudFront-Viewer-Address | 18.97.14.86:50300 |
| CloudFront-Viewer-ASN | 14618 |
| CloudFront-Viewer-TLS | TLSv1.3:TLS_AES_128_GCM_SHA256:sessionResumed |
| CloudFront-Viewer-JA4-Fingerprint | t13d1114h2_5e2a75874763_fddc3888abdf |
| user-agent | CCBot/2.0 (https://commoncrawl.org/faq/) |
| x-amzn-tls-version | TLSv1.3 |