SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cm-avis.pt
SSL/TLS Certificate
SSL/TLS Certificate for cm-avis.pt
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cm-avis.pt
- Valid from
- Jul 4, 2026
- Valid until
- Oct 2, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05122FA6656A87D66C1BE850220B5A74DA01
- SHA-256 fingerprint
- 09:F2:5B:DB:6A:8D:E2:1D:B1:39:E5:B6:18:55:19:C7:05:CE:06:2D:F8:14:42:B5:2B:2F:63:6A:8A:5F:5F:1D
- 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 cm-avis.pt's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch cm-avis.pt 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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