SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
file-reader-document.space
SSL/TLS Certificate
SSL/TLS Certificate for file-reader-document.space
Valid- Issued by (CA)
- Google Trust Services
- Subject
- file-reader-document.space
- Valid from
- Sep 11, 2026
- Valid until
- Dec 10, 2026 (77 days remaining)
- Public key
- EC 256-bit
- Serial
- 07F9B1688E16774E1352C0640C7F5692
- SHA-256 fingerprint
- 55:0D:21:94:3B:4F:40:13:56:11:53:B3:DE:63:FD:95:A7:99:68:8A:F4:87:45:EE:D6:BF:24:1F:B6:BC:8F:8E
- Chain
- WE1 → GTS Root R4
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 22, 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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