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 oag.no
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- oag.no
- Valid from
- Aug 26, 2026
- Valid until
- Nov 24, 2026 (79 days remaining)
- Public key
- EC 256-bit
- Serial
- B5E54443B87B09331045C06F15D4B3F7
- SHA-256 fingerprint
- EC:16:4B:0B:83:5E:56:EA:81:2F:14:FA:28:35:94:6C:E8:AD:E3:45:F4:86:A7:4B:54:5D:75:C8:EB:90:A3:BD
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46
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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