SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for lera-open.store

Self-signed
Issued by (CA)
sni-support-required-for-valid-ssl
Subject
sni-support-required-for-valid-ssl
Valid from
Jun 16, 2026
Valid until
Jun 13, 2036 (3557 days remaining)
Public key
RSA 2048-bit
Serial
16687053A7ED0E7B85940F2A8FE9CBC514DEE8DD
SHA-256 fingerprint
DE:A9:3F:69:89:6C:7E:E9:12:F1:B2:28:8F:68:C7:DA:71:B4:77:85:4F:32:6E:C7:41:30:DD:24:CD:7C:5B:65
Chain
sni-support-required-for-valid-ssl

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by lera-open.store's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch lera-open.store continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.