SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
oper-in-berlin.de
SSL/TLS Certificate
SSL/TLS Certificate for oper-in-berlin.de
Valid- Issued by (CA)
- Starfield Technologies, Inc.
- Subject
- oper-in-berlin.de
- Valid from
- Oct 29, 2025
- Valid until
- Nov 12, 2026 (100 days remaining)
- Public key
- RSA 2048-bit
- Serial
- F1DFEA0B13DC810C
- SHA-256 fingerprint
- 14:0E:50:69:5F:C0:D6:2C:03:C0:81:FF:23:D4:E3:F4:1B:88:F1:90:BB:6E:4F:AB:6E:96:0E:D5:63:D5:8D:7C
- Chain
- Starfield Secure Certificate Authority - G2 → Starfield Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by oper-in-berlin.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch oper-in-berlin.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.