SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dd-lab.hr
SSL/TLS Certificate
SSL/TLS Certificate for dd-lab.hr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dd-lab.hr
- Valid from
- Jun 19, 2026
- Valid until
- Sep 17, 2026 (41 days remaining)
- Public key
- EC 256-bit
- Serial
- 05B138551A4201D462CFF756FA9059E7E561
- SHA-256 fingerprint
- F0:71:49:06:36:4A:14:17:D5:A8:DC:54:E6:8B:58:95:8F:B3:AA:F4:FA:E0:75:79:4B:7E:9A:32:C5:63:B4:F2
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by dd-lab.hr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dd-lab.hr 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.