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calendly.com

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

Security headers: D 33/100 (rank #305 of 461) · TLS: TLSv1.3 · Cert expires in 61 days (rank #152 of 459 soonest) · Response: 120.1 ms (rank #158 of 446)
Certificate valid for 61 more days (until Jan 1 21:55:45 2027 GMT).

TLS certificate

FieldValue
IssuerGoogle Trust Services
Subject CNcalendly.com
Valid untilJan 1 21:55:45 2027 GMT
Days left61
TLS versionTLSv1.3
SAN entries4

Security headers (33/100, grade D)

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

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response120.1 ms
Fastest / slowest50.6 / 256.1 ms
HTTP status200 (https)
Servercloudflare

DNS & robots.txt

FieldValue
A records172.64.146.81, 104.18.41.175
Nameservershope.ns.cloudflare.com, roan.ns.cloudflare.com
MX records5
robots.txtpresent (1 sitemap refs, 5 disallow rules)

How calendly.com compares

SiteHeadersScoreCert days leftms
coda.ioB836927.2
hubspot.comB8339236.9
canva.comB8318465.0
dropbox.comB83167504.0
asana.comC6770103.4
figma.comC6794181.8
miro.comC6791256.0
clickup.comC6714225.1

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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.