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cdc.gov

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

Security headers: F 17/100 (rank #396 of 461) · TLS: TLSv1.3 · Cert expires in 138 days (rank #373 of 459 soonest) · Response: 1267.9 ms (rank #422 of 446)
Certificate valid for 138 more days (until Mar 19 23:59:59 2027 GMT).

TLS certificate

FieldValue
IssuerDigiCert Inc
Subject CN*.cdc.gov
Valid untilMar 19 23:59:59 2027 GMT
Days left138
TLS versionTLSv1.3
SAN entries2

Security headers (17/100, grade F)

HeaderStatus
strict-transport-securitymax-age=31536000 ; includeSubDomains ; preload
content-security-policymissing
x-frame-optionsmissing
x-content-type-optionsmissing
referrer-policymissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response1267.9 ms
Fastest / slowest988.1 / 1632.7 ms
HTTP status200 (https)
Servern/a

DNS & robots.txt

FieldValue
A records104.72.70.115, 104.72.70.117
Nameserversa1-43.akam.net, a2-64.akam.net, a5-66.akam.net, a8-67.akam.net
MX records4
robots.txtpresent (1 sitemap refs, 42 disallow rules)

How cdc.gov compares

SiteHeadersScoreCert days leftms
who.intB835670.3
everydayhealth.comB831221023.3
nih.govC67106629.0
nhs.ukC67761017.2
webmd.comF1759441.1
healthline.comF17124105.4
medicalnewstoday.comF17124133.0
mayoclinic.orgF0166729.2

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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.