SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dn42.wiki
SSL/TLS Certificate
SSL/TLS Certificate for dn42.wiki
Valid- Issued by (CA)
- Google Trust Services
- Subject
- dn42.wiki
- Valid from
- Oct 13, 2026
- Valid until
- Jan 11, 2027 (87 days remaining)
- Public key
- EC 256-bit
- Serial
- 662E29A7A2DFE2B113E41B116EE1D01C
- SHA-256 fingerprint
- 5A:A0:3E:DE:52:7D:BF:05:AF:77:6F:DA:1E:A0:C6:61:F6:A5:BE:72:87:35:E2:8F:FB:2A:B1:B4:B6:28:A5:13
- Chain
- WE1 → GTS Root R4
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 Oct 14, 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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