SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
one2one-bochum.de
SSL/TLS Certificate
SSL/TLS Certificate for one2one-bochum.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- one2one-bochum.de
- Valid from
- Jun 15, 2026
- Valid until
- Sep 13, 2026 (36 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06B0605D707CAB7DB10506C9D30259D43EC9
- SHA-256 fingerprint
- 1E:9E:DA:05:1E:6D:2B:F9:54:9F:04:DA:C4:80:1C:FA:05:DC:76:2E:2F:25:2B:DA:8C:AC:9E:24:75:93:53:6C
- Chain
- YR1 → 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 7, 2026.
Never get surprised by one2one-bochum.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch one2one-bochum.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.