SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dsa-net.dk
SSL/TLS Certificate
SSL/TLS Certificate for dsa-net.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dsa-net.dk
- Valid from
- Sep 3, 2026
- Valid until
- Dec 2, 2026 (82 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06CCB4D39818DAAC4532581CE7E91BB4BD6C
- SHA-256 fingerprint
- B3:13:29:64:F8:6A:5C:F7:CA:E7:7A:DC:E6:60:65:C8:80:82:7E:DB:47:D2:DD:48:69:C2:27:6B:1C:F4:11:A3
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 8, 2026.
Never get surprised by dsa-net.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dsa-net.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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