SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
c-frederiksen.dk
SSL/TLS Certificate
SSL/TLS Certificate for c-frederiksen.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.c-frederiksen.dk
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (78 days remaining)
- Public key
- EC 256-bit
- Serial
- 067C68DF99B86CC1D6925FBB94B0F5EB31AB
- SHA-256 fingerprint
- 24:74:47:0D:A8:A4:FF:B6:20:49:7E:CF:D1:AD:57:FF:8D:C6:E5:2C:9A:99:C5:79:12:88:B1:DA:9D:51:3E:22
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 c-frederiksen.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch c-frederiksen.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.
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