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 ns1.az
Expired- Issued by (CA)
- ZeroSSL
- Subject
- ns1.az
- Valid from
- Jan 31, 2023
- Valid until
- May 1, 2023 (expired 1253 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0D26C6D806845FC612F84FB4B24641CB
- SHA-256 fingerprint
- 75:33:DA:5F:26:0C:3E:42:1B:E5:7C:96:53:3E:B2:20:B1:83:53:3F:B7:46:BA:D1:29:AF:7E:3D:73:E9:B2:E0
- Chain
- ZeroSSL RSA Domain Secure Site CA → USERTrust RSA Certification Authority
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 Aug 27, 2026.
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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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