Linear SSL certificate status

Valid — 85 days until expiry(linear.app)

This page shows the Linear SSL certificate as served by linear.app, 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 07:44 UTC. CertPost is not affiliated with Linear.

Certificate details

Subjectlinear.app

IssuerYE1

Valid from2026-09-15

Expires2026-12-14

Days remaining85

Chain validyes

Hostname matchyes

Negotiated protocolTLSv1.3

TLS versions acceptedTLSv1.2, TLSv1.3

Hostnames this certificate covers

*.linear.app, linear.app

Certificate chain as served

linear.appissued by YE1 · expires 2026-12-14

YE1issued by Root YE · expires 2028-09-02

Root YEissued by ISRG Root X2 · expires 2032-09-02

ISRG Root X2issued by ISRG Root X1 · expires 2032-09-02

ISRG Root X1self-signed (root) · expires 2035-06-04

Common questions

Is the Linear SSL certificate expired?

At the last check, the certificate linear.app serves was within its validity period. It expires on 2026-12-14, 85 days from that check.

When does the Linear SSL certificate expire?

The certificate linear.app is currently serving expires on 2026-12-14 (85 days from the last check). Large services rotate certificates long before that date.

Who issued the Linear SSL certificate?

The certificate was issued by YE1.

How is this checked?

A CertPost probe opens a real TLS connection to linear.app on port 443 and reads the certificate the server presents, the same way a browser does. The result is cached and refreshed hourly.

Linear rotates certificates without downtime. Your own domains are the ones that expire quietly — watch 3 free, no card.

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