Defaults.Exposed › September 2026 census › v10 registry › HTTPS available
HTTPS available
Methodology v10 · canonical ID https-available · TLS & Certificates · scored · census as of September 5, 2026
Without it, browsers warn visitors "Not secure" and they leave.
Definition
| Canonical ID | https-available |
|---|---|
| Category | TLS & Certificates |
| Grade impact | Scored, counts toward the grade |
| Pass | The site serves content over HTTPS (TLS handshake completes and a response is returned). |
| Fail | The site is reachable over plain HTTP only, or HTTPS connections fail. |
| Example (passing) | https://example.com/ → HTTP 200 over TLS |
No-data rule: when this check couldn't be determined for a domain (timeout, SERVFAIL, redacted source) it returns N/A and is excluded from that domain's scoring denominator: "couldn't determine" is never counted as a failure. "Determined absent" is a real fail.
Prevalence across the census
67.0% of graded domains serve over HTTPS (212,154,494 of 316,600,902, as of September 5, 2026).
Census denominator: 316,600,902 graded domains. Aggregates only: never an individual domain's result.
Fix it
Plain-English impact, cost of ignoring it, and step-by-step remediation: defaults.exposed/fix/https
Cite this check
Defaults.Exposed, "HTTPS available (https-available)", Grading Methodology v10 (census as of September 5, 2026). https://defaults.exposed/v10/methodology/https-available
Permalink: https://defaults.exposed/v10/methodology/https-available ·
All 34 checks: v10 registry ·
Machine-readable: /v10/methodology/checks.json ·
Licence: open data