SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lock-r.nl
SSL/TLS Certificate
SSL/TLS Certificate for lock-r.nl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lock-r.nl
- Valid from
- Jul 29, 2026
- Valid until
- Oct 27, 2026 (33 days remaining)
- Public key
- EC 256-bit
- Serial
- 05F82DEF44C5F0CC8BA04352628CE859D67B
- SHA-256 fingerprint
- 7E:67:AF:0A:8F:89:9B:88:64:EC:D1:83:65:46:1D:6A:E3:EE:1F:F1:C4:42:AB:22:01:BF:C6:9D:38:14:A3:D4
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
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 Sep 6, 2026.
Never get surprised by lock-r.nl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lock-r.nl 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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