SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
u-sonic.com
SSL/TLS Certificate
SSL/TLS Certificate for u-sonic.com
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.u-sonic.com
- Valid from
- Apr 22, 2026
- Valid until
- Nov 7, 2026 (43 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 09E68CA87EBE4BD67D25A6EB
- SHA-256 fingerprint
- C5:25:49:EA:CA:EA:2D:3F:90:92:2C:00:67:4D:DF:26:01:C3:3C:DA:F4:AE:83:FA:6E:7D:D5:9E:D5:A5:5E:07
- Chain
- GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by u-sonic.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch u-sonic.com 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.