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flask.palletsprojects.com
Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: frameworks
Security headers: D 33/100
(rank #285 of 461) · TLS: TLSv1.3 ·
Cert expires in 31 days (rank #21 of 459 soonest)
· Response: 190.4 ms (rank #224 of 446)
Certificate valid for 31 more days (until Dec 2 15:29:30 2026 GMT).
TLS certificate
| Field | Value |
|---|
| Issuer | Google Trust Services |
| Subject CN | flask.palletsprojects.com |
| Valid until | Dec 2 15:29:30 2026 GMT |
| Days left | 31 |
| TLS version | TLSv1.3 |
| SAN entries | 1 |
Security headers (33/100, grade D)
| Header | Status |
|---|
x-content-type-options | nosniff |
referrer-policy | no-referrer-when-downgrade |
strict-transport-security | missing |
content-security-policy | missing |
x-frame-options | missing |
permissions-policy | missing |
Availability & performance
| Field | Value |
|---|
| Availability | 100% (3/3 probes) |
| Avg response | 190.4 ms |
| Fastest / slowest | 92.9 / 267.3 ms |
| HTTP status | 200 (https) |
| Server | cloudflare |
DNS & robots.txt
| Field | Value |
|---|
| A records | 104.16.253.120, 104.16.254.120 |
| Nameservers | readthedocs.io, ivan.ns.cloudflare.com, tegan.ns.cloudflare.com |
| MX records | 6 |
| robots.txt | present (1 sitemap refs, 1 disallow rules) |
How flask.palletsprojects.com compares
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