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duckduckgo.com

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

Security headers: A 100/100 (rank #19 of 461) · TLS: TLSv1.3 · Cert expires in 18 days (rank #12 of 459 soonest) · Response: 132.6 ms (rank #169 of 446)
⚠️ Certificate expires in 18 days (Nov 19 23:59:59 2026 GMT). Renew now.

TLS certificate

FieldValue
IssuerDigiCert Inc
Subject CN*.duckduckgo.com
Valid untilNov 19 23:59:59 2026 GMT
Days left18
TLS versionTLSv1.3
SAN entries2

Security headers (100/100, grade A)

HeaderStatus
strict-transport-securitymax-age=31536000
content-security-policydefault-src 'none' ; connect-src https://duck.ai https://*.duck.ai https://duckduckgo.com
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
referrer-policyorigin
permissions-policyinterest-cohort=()
none missing 🎉

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response132.6 ms
Fastest / slowest125.8 / 143.8 ms
HTTP status200 (https)
Servernginx

DNS & robots.txt

FieldValue
A records52.250.42.157
Nameserversdns1.p05.nsone.net, dns2.p05.nsone.net, dns3.p05.nsone.net, dns4.p05.nsone.net
MX records1
robots.txtpresent (2 sitemap refs, 6 disallow rules)

How duckduckgo.com compares

SiteHeadersScoreCert days leftms
ecosia.orgB836963.9
startpage.comB83179239.8
qwant.comB83741016.2
bing.comC6785757.9
searx.beC6773212.2
yandex.comC50154664.8
mojeek.comC50135832.6
baidu.comF17831333.9

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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.