SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-jafarzadeh.com
SSL/TLS Certificate
SSL/TLS Certificate for dr-jafarzadeh.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.dr-jafarzadeh.com
- Valid from
- Oct 28, 2026
- Valid until
- Jan 26, 2027 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D8CF8D130F7A8204826202E920470978D5
- SHA-256 fingerprint
- 79:60:F0:AE:E3:59:A8:17:4A:8D:26:C2:FA:A3:89:43:85:91:A9:76:37:F9:1F:2A:FA:F2:C5:4E:0F:1C:83:1C
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Nov 7, 2026.
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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.
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