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 vaktija.dev

Valid
Issued by (CA)
Let's Encrypt
Subject
vaktija.dev
Valid from
May 25, 2026
Valid until
Aug 23, 2026 (31 days remaining)
Public key
RSA 2048-bit
Serial
06A8E4BD5ECB88B184F5ADB163ACA99FCCD7
SHA-256 fingerprint
97:B9:94:4D:BC:74:E3:61:3A:54:11:35:DC:A1:AD:52:FF:44:D8:B1:65:99:89:94:B0:E7:C9:A4:A5:94:B7:92
Chain
R13 → ISRG Root X1
Subject Alternative Names (2)
vaktija.dev, www.vaktija.dev

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).

Never get surprised by vaktija.dev's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch vaktija.dev 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.