SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
microsoft-office-buy.com
SSL/TLS Certificate
SSL/TLS Certificate for microsoft-office-buy.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- microsoft-office-buy.com
- Valid from
- Sep 6, 2026
- Valid until
- Dec 5, 2026 (84 days remaining)
- Public key
- EC 256-bit
- Serial
- 055E608DED040CF22BB05D8E5EAB5A562FAD
- SHA-256 fingerprint
- 15:66:B1:91:DE:97:3F:0C:F6:00:61:4A:49:6A:4B:29:53:3C:D8:7C:EF:41:B6:A3:16:DA:8F:58:5C:BC:9D:02
- Chain
- YE1 → 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.
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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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