SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
asta-net.pl
SSL/TLS Certificate
SSL/TLS Certificate for asta-net.pl
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.asta-net.pl
- Valid from
- Jan 14, 2026
- Valid until
- Jan 14, 2027 (171 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 7A110CF96DD221773CBAB3A6C05E47D7
- SHA-256 fingerprint
- 11:BA:C9:8F:4D:F7:9D:17:F1:AD:C0:CB:59:6A:C8:0C:D4:50:58:32:E9:E6:E2:F1:13:9F:AA:69:5A:28:AE:B5
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by asta-net.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch asta-net.pl 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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