SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
abbruch-kalkulator.com
SSL/TLS Certificate
SSL/TLS Certificate for abbruch-kalkulator.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- abbruch-kalkulator.com
- Valid from
- Dec 14, 2021
- Valid until
- Mar 14, 2022 (expired 1647 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0410E2B80F73DCF62CE6BE20FD873E3C1A97
- SHA-256 fingerprint
- 83:35:D3:2F:B1:EC:79:52:8D:80:28:40:D2:A7:47:0D:8F:66:CC:D5:56:BA:C0:B9:D7:BC:0A:25:2B:26:38:35
- Chain
- R3 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by abbruch-kalkulator.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch abbruch-kalkulator.com 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.