SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
assertiva-br.com
SSL/TLS Certificate
SSL/TLS Certificate for assertiva-br.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- assertiva-br.com
- Valid from
- Jul 18, 2026
- Valid until
- Oct 16, 2026 (36 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B1B6373B9EE7D603E4B2DB6D0612A80862
- SHA-256 fingerprint
- FC:1C:EE:BA:C2:4C:2C:96:6C:84:6F:9A:13:2C:B7:25:5C:39:33:03:0B:8C:5A:F6:14:C3:B2:B8:EB:4D:A0:93
- 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.
This certificate has been served since Aug 26, 2026.
Never get surprised by assertiva-br.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch assertiva-br.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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