SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
armi.edu.pl
SSL/TLS Certificate
SSL/TLS Certificate for armi.edu.pl
Valid- Issued by (CA)
- Google Trust Services
- Subject
- armi.edu.pl
- Valid from
- Jul 28, 2026
- Valid until
- Oct 26, 2026 (73 days remaining)
- Public key
- EC 256-bit
- Serial
- 866E83A5262C56770E7ADBE0808CE9C3
- SHA-256 fingerprint
- 14:DB:CB:31:12:BC:2E:6D:91:1D:3E:42:5B:BC:62:23:97:DA:DE:5E:AD:43:1C:AD:ED:91:BB:FC:11:65:B7:2C
- Chain
- WE1 → GTS Root R4
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 Aug 12, 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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