SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
osnova-architecture.com
SSL/TLS Certificate
SSL/TLS Certificate for osnova-architecture.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- osnova-architecture.com
- Valid from
- Nov 3, 2025
- Valid until
- Nov 18, 2026 (50 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 08284EB09F2D6CA04AD4C6BA647F7F9F
- SHA-256 fingerprint
- 59:CD:4C:80:2E:80:CE:71:91:30:7C:07:56:AC:F7:BD:14:EE:1C:83:AA:B7:6F:37:A1:34:73:D3:02:3C:2C:2C
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by osnova-architecture.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch osnova-architecture.com 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.