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 itmaatje-groningen.nl

Valid
Issued by (CA)
Sectigo Limited
Subject
itmaatje-groningen.nl
Valid from
Jul 23, 2026
Valid until
Jan 19, 2027 (65 days remaining)
Public key
RSA 2048-bit
Serial
C8322B515FB180A661FCF6BA7E84DE4A
SHA-256 fingerprint
76:13:F1:86:1E:A3:33:05:E6:01:75:EA:14:18:60:53:B1:1E:0F:7A:3A:53:96:5D:71:A1:AB:54:FC:A8:C6:C6
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
itmaatje-groningen.nl, www.itmaatje-groningen.nl

Certificate Authority Authorization (CAA)

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

This certificate has been served since Aug 15, 2026.

Never get surprised by itmaatje-groningen.nl's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch itmaatje-groningen.nl 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.