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 sayme.ir
Self-signed- Issued by (CA)
- dn-server.com
- Subject
- dn-server.com
- Valid from
- Apr 16, 2017
- Valid until
- Apr 16, 2018 (expired 3037 days ago)
- Public key
- RSA 2048-bit
- Serial
- 014DAFA6DA
- SHA-256 fingerprint
- 0B:53:9D:07:44:45:0E:2F:F9:14:B2:AA:9D:5F:03:14:50:A8:0E:9A:17:F8:E4:93:35:A3:EB:9F:D1:4D:42:01
- Chain
- dn-server.com
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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