SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for s-edu.ir
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- s-edu.ir
- Valid from
- Jun 1, 2026
- Valid until
- Aug 30, 2026 (22 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 055F3E00823C5DAA6C2C450357F80237F6C0
- SHA-256 fingerprint
- 88:67:64:26:D4:49:F8:68:8C:22:B8:EA:D5:AB:B5:BA:BA:37:F4:8D:CA:29:0E:BD:4C:52:93:3E:E6:99:48:37
- Chain
- YR1 → Root YR → 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 Jul 31, 2026.
Never get surprised by s-edu.ir's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch s-edu.ir 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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