SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
osvald-bjelland.com
SSL/TLS Certificate
SSL/TLS Certificate for osvald-bjelland.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- osvald-bjelland.com
- Valid from
- Jun 22, 2026
- Valid until
- Sep 20, 2026 (48 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0578F05B5D2A1E1C1475450CC2BAD5504133
- SHA-256 fingerprint
- F0:03:CA:97:37:08:FA:63:34:F4:75:BA:AB:A4:ED:54:82:5A:FA:B2:D1:F9:CE:DC:4F:AC:A0:2F:2E:72:A3:F1
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 27, 2026.
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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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