SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
039-opt.top
SSL/TLS Certificate
SSL/TLS Certificate for 039-opt.top
Valid- Issued by (CA)
- Amazon
- Subject
- 039-opt.top
- Valid from
- Sep 26, 2026
- Valid until
- Apr 11, 2027 (194 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 02E0735D042CDBD6C46B361434643732
- SHA-256 fingerprint
- 29:6C:8C:2E:EE:F4:54:11:94:06:38:13:5D:A4:F0:A6:AA:05:1D:03:8A:D5:2F:EF:4C:16:A5:10:10:25:AF:3C
- Chain
- Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
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 Aug 4, 2026.
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This is today's certificate. Turn on monitoring and we'll watch 039-opt.top 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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