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mozilla.org

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: misc

Security headers: B 83/100 (rank #123 of 461) · TLS: TLSv1.3 · Cert expires in 42 days (rank #64 of 459 soonest) · Response: 106.1 ms (rank #134 of 446)
Certificate valid for 42 more days (until Dec 13 10:07:59 2026 GMT).

TLS certificate

FieldValue
IssuerGoogle Trust Services
Subject CNmozilla.org
Valid untilDec 13 10:07:59 2026 GMT
Days left42
TLS versionTLSv1.3
SAN entries1

Security headers (83/100, grade B)

HeaderStatus
strict-transport-securitymax-age=31536000
content-security-policymedia-src 'self' assets.mozilla.net videos.cdn.mozilla.net www.mozilla.org; style-src 'sel
x-frame-optionsDENY
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response106.1 ms
Fastest / slowest86.8 / 143.6 ms
HTTP status200 (https)
Servergranian

DNS & robots.txt

FieldValue
A records35.190.14.201
Nameserversns4-64.akam.net, ns5-65.akam.net, ns1-240.akam.net, ns7-66.akam.net
MX records4
robots.txtpresent (0 sitemap refs, 2 disallow rules)

How mozilla.org compares

SiteHeadersScoreCert days leftms
speedtest.netA100161175.3
iana.orgB836564.9
whatismyipaddress.comB834534.2
archive.orgC5010073.3
w3.orgC503497.9
ietf.orgC507998.1
ipinfo.ioC5088136.5
gravatar.comC5065200.8

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Show your grade in your README (free, auto-updates):

[![security](https://pseo.rovy.tech/api/v1/badge?url=https://mozilla.org)](https://pseo.rovy.tech/sites/mozilla-org.html)

Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.