Notion SSL certificate status
Valid — 52 days until expiry(notion.so)
This page shows the Notion SSL certificate as served by notion.so, read from a live TLS handshake by an independent CertPost probe and rechecked hourly: expiry, issuer, hostname coverage, the full chain, and the negotiated protocol.
Last checked 2026-09-20 04:27 UTC. CertPost is not affiliated with Notion.
Certificate details
Hostnames this certificate covers
notion.so, *.notion.so, *.dev.notion.so, *.stg.notion.so, *.www.notion.so
Certificate chain as served
Common questions
Is the Notion SSL certificate expired?
At the last check, the certificate notion.so serves was within its validity period. It expires on 2026-11-11, 52 days from that check.
When does the Notion SSL certificate expire?
The certificate notion.so is currently serving expires on 2026-11-11 (52 days from the last check). Large services rotate certificates long before that date.
Who issued the Notion SSL certificate?
The certificate was issued by WE1.
How is this checked?
A CertPost probe opens a real TLS connection to notion.so on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.
Notion rotates certificates without downtime. Your own domains are the ones that expire quietly — watch 3 free, no card.
Monitor your certificatesOr run a one-off check with the free SSL checker.