SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lock-t.com
SSL/TLS Certificate
SSL/TLS Certificate for lock-t.com
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- lock-t.com
- Valid from
- May 15, 2026
- Valid until
- Aug 13, 2026 (20 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0558DE69DD86EAF7F06B6F7D050D6BF1C1DD
- SHA-256 fingerprint
- 5F:37:A9:A9:58:47:23:A7:A6:19:AB:86:A1:C6:67:EB:4B:E7:DB:0B:46:0A:E7:18:CE:50:E8:D7:F3:AD:7D:41
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by lock-t.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lock-t.com continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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