SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
alecs-portals.nl
SSL/TLS Certificate
SSL/TLS Certificate for alecs-portals.nl
Self-signed- Issued by (CA)
- s925.whserver.nl
- Subject
- s925.whserver.nl
- Valid from
- Sep 11, 2024
- Valid until
- Sep 11, 2025 (expired 339 days ago)
- Public key
- RSA 4096-bit
- Serial
- 1522E5DD9F955325135A9AE3348754BFABDE8B9B
- SHA-256 fingerprint
- 27:28:FC:EA:70:CB:01:29:4A:D1:04:99:46:2D:A2:82:F3:C7:E9:66:2B:A0:DE:DE:00:B5:30:FA:BF:8C:DC:68
- Chain
- s925.whserver.nl
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 Jul 31, 2026.
Never get surprised by alecs-portals.nl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch alecs-portals.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.