SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cm-baiao.pt
SSL/TLS Certificate
SSL/TLS Certificate for cm-baiao.pt
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cm-baiao.pt
- Valid from
- Jun 22, 2026
- Valid until
- Sep 20, 2026 (35 days remaining)
- Public key
- EC 256-bit
- Serial
- 052BEDBEF412BFB9D9E3101A3204DA3752F6
- SHA-256 fingerprint
- B5:8F:3F:1C:FF:91:76:2D:01:71:6A:2C:97:91:49:8E:96:1C:05:0C:45:6D:D4:17:F4:AA:05:FB:0B:9C:E3:5C
- Chain
- YE2 → Root YE → ISRG Root X2 → 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-baiao.pt's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch cm-baiao.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.