SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sp-coaching.dk
SSL/TLS Certificate
SSL/TLS Certificate for sp-coaching.dk
Self-signed- Issued by (CA)
- s12.stom.dk
- Subject
- s12.stom.dk
- Valid from
- Mar 28, 2022
- Valid until
- Mar 28, 2023 (expired 1239 days ago)
- Public key
- RSA 4096-bit
- Serial
- 7209722EDCBDC930451A71B32D0B403CBC194D94
- SHA-256 fingerprint
- E1:53:44:18:09:20:C9:59:EA:80:55:5E:E2:CA:99:DC:C6:6F:2B:4E:2D:7D:69:21:2B:2A:64:B5:C1:D6:8E:A3
- Chain
- s12.stom.dk
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 30, 2026.
Never get surprised by sp-coaching.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sp-coaching.dk 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.