SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a-diariooficial.com.br
SSL/TLS Certificate
SSL/TLS Certificate for a-diariooficial.com.br
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- a-diariooficial.com.br
- Valid from
- Jun 7, 2026
- Valid until
- Sep 5, 2026 (35 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06C3186BF4B65629A0C6D31101F8CEB8D1D0
- SHA-256 fingerprint
- 2F:38:42:EC:F3:B6:CF:48:C0:4B:ED:D5:12:35:CF:00:1C:9B:BA:D3:F7:68:BE:DC:75:0C:D3:B5:F5:9F:D8:FE
- Chain
- YR1 → 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 a-diariooficial.com.br's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch a-diariooficial.com.br 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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