SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ufrj-br.com
SSL/TLS Certificate
SSL/TLS Certificate for ufrj-br.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ufrj-br.com
- Valid from
- Oct 20, 2026
- Valid until
- Jan 18, 2027 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06D2956BEC35D0162DDE1E250F94670EF7A7
- SHA-256 fingerprint
- 27:78:2E:29:31:2A:F6:46:22:35:9B:69:1D:0F:71:E2:3F:5F:16:66:97:4A:46:3B:14:7F:6E:D7:C6:A2:8E:A5
- 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.
Never get surprised by ufrj-br.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ufrj-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, CNAME, TXT 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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