SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for rhtelefonia.com.br

Valid
Issued by (CA)
Sectigo Limited
Subject
rhtelefonia.com.br
Valid from
Sep 28, 2026
Valid until
Apr 14, 2027 (196 days remaining)
Public key
RSA 2048-bit
Serial
E7D68D3D984A63F6A89BEA5582925299
SHA-256 fingerprint
14:1C:BB:95:E5:E9:E1:31:CF:AF:9B:03:EC:EB:08:49:4B:01:77:88:82:E9:95:6C:CE:4A:06:37:68:E1:5F:C7
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Subject Alternative Names (2)
rhtelefonia.com.br, www.rhtelefonia.com.br

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 29, 2026.

Never get surprised by rhtelefonia.com.br's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch rhtelefonia.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.