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notion.so

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

Security headers: C 50/100 (rank #235 of 461) · TLS: TLSv1.3 · Cert expires in 69 days (rank #196 of 459 soonest) · Response: 144.2 ms (rank #182 of 446)
Certificate valid for 69 more days (until Jan 10 00:40:01 2027 GMT).

TLS certificate

FieldValue
IssuerGoogle Trust Services
Subject CNnotion.so
Valid untilJan 10 00:40:01 2027 GMT
Days left69
TLS versionTLSv1.3
SAN entries5

Security headers (50/100, grade C)

HeaderStatus
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-security-policyscript-src 'self' 'unsafe-inline' 'unsafe-eval' https://gist.github.com https://apis.googl
referrer-policystrict-origin-when-cross-origin
x-frame-optionsmissing
x-content-type-optionsmissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response144.2 ms
Fastest / slowest124.3 / 169.3 ms
HTTP status200 (https)
Servercloudflare

DNS & robots.txt

FieldValue
A records208.103.161.17, 208.103.161.2, 208.103.161.16, 208.103.161.1
Nameserversn/a
MX records0
robots.txtpresent (11 sitemap refs, 16 disallow rules)

How notion.so 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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[![security](https://pseo.rovy.tech/api/v1/badge?url=https://notion.so)](https://pseo.rovy.tech/sites/notion-so.html)

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.