SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for d-one.lt
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- d-one.lt
- Valid from
- Oct 22, 2025
- Valid until
- Oct 30, 2026 (29 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 378AF12A17A9F56564EB2EE3FA1B2A6A
- SHA-256 fingerprint
- C4:D6:6C:56:D5:CC:24:4D:B9:DC:EE:B7:E9:26:B6:6F:78:6A:B1:4B:7F:7A:0C:EA:C7:8A:9F:B2:32:0A:37:C6
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Sep 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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