SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
attivonda-app.com
SSL/TLS Certificate
SSL/TLS Certificate for attivonda-app.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- attivonda-app.com
- Valid from
- Oct 2, 2026
- Valid until
- Dec 31, 2026 (77 days remaining)
- Public key
- EC 256-bit
- Serial
- 06BA923DD7B5B17E200BF6CBD724351FB560
- SHA-256 fingerprint
- A9:06:72:AD:01:19:1F:54:65:1C:0A:F6:D9:A9:F4:1C:93:54:C2:5A:3E:8E:93:E3:1A:08:FF:1C:56:E3:05:92
- Chain
- YE1 → 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.
This certificate has been served since Oct 5, 2026.
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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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