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 csp-santabbondio.com

Valid
Issued by (CA)
Sectigo Limited
Subject
*.csp-santabbondio.com
Valid from
Feb 14, 2026
Valid until
Feb 28, 2027 (128 days remaining)
Public key
RSA 2048-bit
Serial
D16167017005CB2FB341398231EFA838
SHA-256 fingerprint
46:F2:36:0F:8E:33:84:03:92:C9:D4:AF:91:54:CD:6D:A9:57:BE:3D:D9:7B:59:F8:28:F5:88:72:02:BB:14:0A
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.csp-santabbondio.com, csp-santabbondio.com

Certificate Authority Authorization (CAA)

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

Never get surprised by csp-santabbondio.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch csp-santabbondio.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.