SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dive-safe.nl
SSL/TLS Certificate
SSL/TLS Certificate for dive-safe.nl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dive-safe.nl
- Valid from
- Jun 28, 2026
- Valid until
- Sep 26, 2026 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F817DDB6E0DBCE5A8C6985370BE5B5D5C6
- SHA-256 fingerprint
- AB:20:68:AE:C0:36:34:EE:4E:4F:E8:9B:B1:8A:F4:4F:17:7A:0F:99:CF:5C:D1:EB:ED:AB:C7:09:F6:C2:75:E0
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by dive-safe.nl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dive-safe.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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