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harvard.edu

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

Security headers: F 0/100 (rank #453 of 461) · TLS: TLSv1.3 · Cert expires in 38 days (rank #55 of 459 soonest) · Response: 37.7 ms (rank #26 of 446)
Certificate valid for 38 more days (until Dec 9 04:42:41 2026 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CNharvard.edu
Valid untilDec 9 04:42:41 2026 GMT
Days left38
TLS versionTLSv1.3
SAN entries2

Security headers (0/100, grade F)

HeaderStatus
strict-transport-securitymissing
content-security-policymissing
x-frame-optionsmissing
x-content-type-optionsmissing
referrer-policymissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response37.7 ms
Fastest / slowest29.7 / 52.7 ms
HTTP status200 (https)
Servernginx

DNS & robots.txt

FieldValue
A records192.0.66.20
Nameserversa6-66.akam.net, a7-65.akam.net, a1-171.akam.net, a10-66.akam.net
MX records2
robots.txtpresent (10 sitemap refs, 1 disallow rules)

How harvard.edu compares

SiteHeadersScoreCert days leftms
stanford.eduA1005162.5
ox.ac.ukA10064567.1
cam.ac.ukA10053103.1
berkeley.eduB836935.5
edx.orgB83173122.2
udemy.comB837124.7
udacity.comB8393147.3
w3schools.comB831191050.3

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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.