SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zaim-ok.com
SSL/TLS Certificate
SSL/TLS Certificate for zaim-ok.com
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- smtp.zaim-ok.com
- Valid from
- Jun 29, 2026
- Valid until
- Sep 27, 2026 (17 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059BF61634E05DCE42B3241E87B212B9DAAC
- SHA-256 fingerprint
- 0F:25:A9:5F:CA:C6:E3:BD:55:5B:B2:FD:ED:39:BE:C2:33:EC:56:22:E1:06:4C:43:88:2B:10:2E:1E:73:29:DE
- 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.
Never get surprised by zaim-ok.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zaim-ok.com 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.
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