SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hey-theo.com
SSL/TLS Certificate
SSL/TLS Certificate for hey-theo.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hey-theo.com
- Valid from
- Jul 2, 2026
- Valid until
- Sep 30, 2026 (69 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A087F0124B67C9F69CD6F37F674CE7D628
- SHA-256 fingerprint
- 0D:FE:DD:CD:F6:42:2D:F7:06:78:47:7E:10:6B:6D:04:A6:FC:7F:A4:6B:55:BF:F5:EF:6C:0A:CB:D5:2B:8D:AD
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by hey-theo.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hey-theo.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.