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 3-mt.net
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- 3-mt.net
- Valid from
- Mar 3, 2026
- Valid until
- Mar 3, 2027 (162 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5A00D2CFCD49D017885A0548781FB739
- SHA-256 fingerprint
- 33:F0:B1:69:89:54:BF:80:32:A4:31:43:E3:2F:58:D7:2F:F9:BA:74:FD:D9:C1:19:F1:F9:DC:18:61:5E:6F:D8
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → 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 21, 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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