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 lerch-arkitektur.se

Valid
Issued by (CA)
Let's Encrypt
Subject
*.lerch-arkitektur.se
Valid from
Oct 25, 2026
Valid until
Jan 23, 2027 (76 days remaining)
Public key
EC 256-bit
Serial
052C7BBF527688C16D2116E26D86A2E9F9FA
SHA-256 fingerprint
FE:37:6D:39:34:61:B6:72:A6:7C:0B:E8:9D:A2:08:EC:84:DA:49:0E:F6:8E:FB:6F:DE:E2:72:AB:65:C7:77:F5
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.lerch-arkitektur.se, lerch-arkitektur.se

Certificate Authority Authorization (CAA)

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

Never get surprised by lerch-arkitektur.se's certificate expiring

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

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.