SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for nowak-holding.com

Hostname mismatch
Issued by (CA)
nazwa.pl Sp. z o.o.
Subject
*.nowakholding.com
Valid from
Dec 12, 2025
Valid until
Dec 10, 2026 (38 days remaining)
Public key
EC 384-bit
Serial
6FE184B3422CA8C419CEC7BCCCC26D6F
SHA-256 fingerprint
DA:04:7A:20:38:5D:42:3A:E1:C6:C3:32:93:EF:79:E6:85:DE:A7:A6:9B:53:A0:FC:52:6B:81:9C:09:5F:B1:C9
Chain
nazwaSSL DV TLS G2 E29 CA → Certum EC-384 CA → Certum Trusted Network CA
Subject Alternative Names (2)
*.nowakholding.com, nowakholding.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by nowak-holding.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch nowak-holding.com continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.