Bluesky SSL certificate status

Valid — 145 days until expiry(bsky.app)

This page shows the Bluesky SSL certificate as served by bsky.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 07:48 UTC. CertPost is not affiliated with Bluesky.

Certificate details

Subjectbsky.app

IssuerAmazon RSA 2048 M04

Valid from2026-01-14

Expires2027-02-12

Days remaining145

Chain validyes

Hostname matchyes

Negotiated protocolTLSv1.2

TLS versions acceptedTLSv1, TLSv1.1, TLSv1.2

Hostnames this certificate covers

bsky.app

Certificate chain as served

bsky.appissued by Amazon RSA 2048 M04 · expires 2027-02-12

Amazon RSA 2048 M04issued by Amazon Root CA 1 · expires 2030-08-23

Amazon Root CA 1issued by Starfield Services Root Certificate Authority - G2 · expires 2037-12-31

Starfield Services Root Certificate Authority - G2self-signed (root) · expires 2037-12-31

Common questions

Is the Bluesky SSL certificate expired?

At the last check, the certificate bsky.app serves was within its validity period. It expires on 2027-02-12, 145 days from that check.

When does the Bluesky SSL certificate expire?

The certificate bsky.app is currently serving expires on 2027-02-12 (145 days from the last check). Large services rotate certificates long before that date.

Who issued the Bluesky SSL certificate?

The certificate was issued by Amazon RSA 2048 M04.

How is this checked?

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

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

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