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stackexchange.com

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

Security headers: B 83/100 (rank #66 of 461) · TLS: TLSv1.3 · Cert expires in 72 days (rank #212 of 459 soonest) · Response: 34.0 ms (rank #16 of 446)
Certificate valid for 72 more days (until Jan 12 06:02:10 2027 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CNstackexchange.com
Valid untilJan 12 06:02:10 2027 GMT
Days left72
TLS versionTLSv1.3
SAN entries3

Security headers (83/100, grade B)

HeaderStatus
content-security-policydefault-src 'none'; script-src 'nonce-f9wbqo8wBtn7n2sMgPM3bx' 'unsafe-eval' https://challe
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
referrer-policysame-origin
permissions-policyaccelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(
strict-transport-securitymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response34.0 ms
Fastest / slowest22.6 / 46.4 ms
HTTP status403 (https)
Servercloudflare

DNS & robots.txt

FieldValue
A records198.252.206.1
Nameserversdamian.ns.cloudflare.com, sureena.ns.cloudflare.com
MX records5
robots.txtabsent (n/a sitemap refs, n/a disallow rules)

How stackexchange.com compares

SiteHeadersScoreCert days leftms
producthunt.comA1008097.2
news.ycombinator.comB834853.5
quora.comB8378301.9
indiehackers.comB8386108.1
reddit.comC6710745.1
medium.comC673321.9
dev.toC6719545.1
lemmy.worldC6779380.7

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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.