SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for sp-in.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sp-in.de
- Valid from
- Jul 17, 2026
- Valid until
- Oct 15, 2026 (39 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 058BF2A7F492DFB0F53A0CD98A0A46703B6C
- SHA-256 fingerprint
- A9:9D:23:37:F6:10:C4:50:D6:73:B0:F2:B6:62:EB:43:14:64:E1:70:5F:39:58:1B:4C:F3:7F:B2:1B:5E:D1:0B
- Chain
- YR2 → Root YR → 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 Aug 31, 2026.
Never get surprised by sp-in.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sp-in.de 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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