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 aprec.org.br

Expired
Issued by (CA)
Let's Encrypt
Subject
aprec.org.br
Valid from
Sep 13, 2021
Valid until
Dec 12, 2021 (expired 1745 days ago)
Public key
RSA 2048-bit
Serial
04B5E969F4EF91FBD9CC6B4701C8AB12FED4
SHA-256 fingerprint
B2:BA:10:61:AC:B7:4E:F6:3A:C8:59:E3:1A:6D:37:4C:68:AD:5E:07:42:70:E5:26:0A:74:2B:7F:55:F5:23:E7
Chain
R3 → ISRG Root X1
Subject Alternative Names (2)
aprec.org.br, www.aprec.org.br

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by aprec.org.br's certificate expiring

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