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 frieda.ninja

Valid
Issued by (CA)
Sectigo Limited
Subject
*.frieda.ninja
Valid from
Oct 7, 2026
Valid until
Apr 5, 2027 (170 days remaining)
Public key
RSA 2048-bit
Serial
A209A45BEB959E7C8FC95DFBE9B61CEB
SHA-256 fingerprint
0B:BF:FC:60:21:8A:FF:33:10:BC:57:FB:C4:0B:34:0B:07:2A:75:CE:3A:40:02:1A:68:30:25:21:A6:CD:B3:F0
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.frieda.ninja, frieda.ninja

Certificate Authority Authorization (CAA)

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

Never get surprised by frieda.ninja's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch frieda.ninja 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.

Monitor this certificate free

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