SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aw-klima.com.pl
SSL/TLS Certificate
SSL/TLS Certificate for aw-klima.com.pl
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- andrzejkrupinski.net
- Valid from
- Feb 19, 2024
- Valid until
- May 19, 2024 (expired 861 days ago)
- Public key
- RSA 2048-bit
- Serial
- 04F9739AA8684D65FCF8CFC639DBB9A5322A
- SHA-256 fingerprint
- CB:4D:9D:2D:87:75:EB:9A:A7:20:24:0D:32:78:BC:3C:AD:DC:D7:F0:B6:9B:71:43:75:2D:67:E4:07:4B:A0:F1
- Chain
- R3 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 7, 2026.
Never get surprised by aw-klima.com.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch aw-klima.com.pl 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.