SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
viken-u.no
SSL/TLS Certificate
SSL/TLS Certificate for viken-u.no
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- viken-u.no
- Valid from
- Jul 16, 2026
- Valid until
- Oct 14, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 058D72C073841D6E19B9CAE866EA12162A0D
- SHA-256 fingerprint
- 67:2B:BA:00:F1:BC:2C:90:79:AC:C0:C1:CE:36:DC:4E:82:7F:DC:57:7A:19:EB:C4:A4:77:A5:51:30:D1:75:EA
- 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.
Never get surprised by viken-u.no's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch viken-u.no 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.