SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
longa-lango.pl
SSL/TLS Certificate
SSL/TLS Certificate for longa-lango.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.longa-lango.pl
- Valid from
- Aug 25, 2026
- Valid until
- Nov 23, 2026 (36 days remaining)
- Public key
- EC 256-bit
- Serial
- 05CEA95602FC0C3BB491C7B086EECFE4BC5B
- SHA-256 fingerprint
- 19:17:47:F1:CA:49:32:0D:7C:4D:A1:8A:AA:31:49:7E:49:30:DF:10:2A:6A:AC:92:BA:E9:E9:1A:92:D5:7A:3C
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by longa-lango.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch longa-lango.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.