SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hans-gerritsen.nl
SSL/TLS Certificate
SSL/TLS Certificate for hans-gerritsen.nl
Valid- Issued by (CA)
- Google Trust Services
- Subject
- hans-gerritsen.nl
- Valid from
- Aug 16, 2026
- Valid until
- Nov 14, 2026 (44 days remaining)
- Public key
- EC 256-bit
- Serial
- 3F0AAC30727D7BD40EC24932F1B2DBDA
- SHA-256 fingerprint
- 90:80:EE:9E:79:6F:74:73:A5:47:96:84:58:3D:15:9D:C6:BA:6C:BC:16:87:45:2A:40:8E:96:3E:0E:8A:B9:D6
- 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 Sep 26, 2026.
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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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