SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sumaarchitektow.pl
SSL/TLS Certificate
SSL/TLS Certificate for sumaarchitektow.pl
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.sumaarchitektow.pl
- Valid from
- Jun 12, 2026
- Valid until
- Dec 27, 2026 (158 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1CBFF3FDD604A02CF6EB8571E6C712EB
- SHA-256 fingerprint
- 29:98:70:C7:E8:0E:03:1E:55:54:66:D2:71:6A:02:C3:7F:EE:E8:58:E7:DD:19:3C:70:E4:02:90:8F:1B:EE:1B
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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