SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zefiria.com
SSL/TLS Certificate
SSL/TLS Certificate for zefiria.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- zefiria.org
- Valid from
- Jun 6, 2025
- Valid until
- Sep 4, 2025 (expired 375 days ago)
- Public key
- RSA 4096-bit
- Serial
- 05330C4A575DA782BE61F3295DFD59EF2D7B
- SHA-256 fingerprint
- 4A:50:2D:F1:68:5D:8B:C4:86:50:52:D6:B5:AF:06:A0:0C:1D:0F:42:CB:AD:E0:2C:26:88:F8:33:D2:4A:57:5F
- Chain
- R10 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch zefiria.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.
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