Real-Time Domain Monitoring — WHOIS, DNS & SSL Alerts
Track changes to domain registration data, DNS configurations, SSL certificates, and expiry dates. Get notified instantly when something changes — protect your brand, your infrastructure, and your domains.
Four Layers of Domain Protection
We monitor every critical aspect of your domains and alert you the moment something changes. All powered by the same APIs you already use.
WHOIS Change Detection
Detect modifications to domain ownership, registrar, nameservers, status codes, and contact information. Essential for brand protection and trademark monitoring.
DNS Record Monitoring
Track changes in A, AAAA, MX, TXT, CNAME, and NS records. Get alerted when DNS configurations change — whether from authorized updates or unauthorized tampering.
SSL Certificate Tracking
Monitor SSL/TLS certificate validity, issuer changes, and upcoming expirations. Prevent service disruptions caused by expired or misconfigured certificates.
Domain Expiry Alerts
Never let a domain lapse by accident. Receive advance warnings before your domains expire, giving you time to renew or take action on expiring third-party domains.
Who Needs Domain Monitoring?
Whether you manage 1 domain or 1,000, monitoring protects your online assets around the clock.
Brand Owners
Monitor domains similar to your brand to detect typosquatting, phishing attempts, and unauthorized registrations before they harm your reputation.
DevOps & IT Teams
Track DNS propagation, SSL certificate renewals, and infrastructure changes across all your domains. Integrate monitoring into your operations workflow.
Domain Investors
Watch expiring domains you're interested in acquiring. Get instant alerts when high-value domains drop or change registration status.
Set Up Monitoring in 3 Steps
Add Your Domains
Enter the domains you want to track in your WhoisJSON dashboard. Import one domain or your entire portfolio.
Configure Alerts
Choose what to monitor — WHOIS, DNS, SSL, expiry — and set your notification preferences.
Get Notified
We check your domains continuously and alert you instantly when any tracked change is detected.
Monitoring Included in Every Plan
Domain monitoring is included at no extra cost. The number of monitored domains scales with your plan.
- Everything in Basic
- 30,000 API requests
- Fast support
- Force refresh
- Everything in Pro
- 150,000 API requests
- Priority alerts
- Bulk monitoring
- Everything in Ultra
- Unlimited API requests
- Up to 300 req/min
- Enterprise support
Why Domain Monitoring Matters
Domain names are critical business assets. A hijacked domain, an expired SSL certificate, or an unauthorized DNS change can cause downtime, data breaches, or loss of customer trust. WhoisJSON's monitoring service continuously checks your domains across four layers — WHOIS registration data, DNS records, SSL certificates, and expiry dates — and alerts you the moment anything changes. Unlike standalone monitoring tools, our service is built on top of the same WHOIS API, DNS API, and SSL API that power thousands of integrations, ensuring accurate and reliable data.
Integrated with Your API Workflow
Domain monitoring is not a separate product — it is part of the WhoisJSON platform. The same API key that gives you access to WHOIS lookups, DNS resolution, domain availability checks, and SSL validation also powers your monitoring dashboard. There is no extra configuration or billing. Simply log into your dashboard, add the domains you want to track, and let our system handle the rest. Monitoring runs on every plan, from the free tier (1 domain) to enterprise plans (50+ domains).
Protect Your Brand and Infrastructure
Combine monitoring with our other APIs to build a complete domain security strategy. Use the WHOIS API to investigate suspicious domain registrations. Cross-reference DNS records with the NSLookup API to verify propagation after changes. Check SSL certificate validity with the SSL Certificate API to prevent service disruptions. And use domain availability checks to snap up expiring domains the moment they become available. Everything works together through a single token and a unified API documentation.
Start Protecting Your Domains Today
Create your free account and add your first monitored domain in under a minute. No credit card required.