SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pl-byg.dk
SSL/TLS Certificate
SSL/TLS Certificate for pl-byg.dk
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- simply.com
- Valid from
- Oct 6, 2025
- Valid until
- Oct 6, 2026 (75 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6FADB390D0357DF9E2A9A545E159267D
- SHA-256 fingerprint
- 14:56:0B:29:78:C8:05:CA:52:4C:5A:50:0A:DA:73:18:E3:58:D4:AF:74:11:EA:D2:47:D7:E6:46:04:70:6D:E2
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by pl-byg.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pl-byg.dk 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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