Security & Domains
Certificates, domains and exposure — the problems that don't show up as downtime.
SSL Monitoring
Certificate expiry alerts before anything breaks.
WHOIS Monitoring
Track a domain's own registration expiry and catch an unexpected ownership transfer — independent of its SSL certificate.
Certificate Transparency Log Monitoring
Get notified the moment a new certificate is issued for your domain or a subdomain — catches unauthorized issuance and shadow IT early.
Subdomain Monitoring
Find your domain's subdomains in Certificate Transparency logs and get alerted on new ones and on dangling CNAMEs that could be taken over.
Typosquatting Monitoring
Find registered lookalikes of your domain — typos, homoglyphs, IDN homographs, other TLDs, "brand-login" names — and get alerted when a new one appears.
Port Discovery
Full-range TCP port scan of a host you own to flag any port that's open now but wasn't before — an early warning for an accidentally-exposed service.
DNS Blacklist Monitoring
Check whether an IP (or a hostname's IP) is listed on spam blacklists — catch a reputation problem before it blocks your mail.
Email Authentication
Watch a domain's SPF, DKIM and DMARC records for the silent misconfiguration that tanks deliverability.
Cookie Monitoring
Track a page's cookies for unexpected additions, removals, or security-attribute changes — Secure, HttpOnly, and SameSite, not just whether a cookie is still there.
Third-Party Script Integrity
Get alerted when a third-party script your page loads changes — an early warning for supply-chain and card-skimming attacks.
Start monitoring everything in minutes
Create a free account, add your first check and get alerted the moment something breaks — no credit card required.