uptime mongers
trust, but verify DNSSEC
Catch parent-zone changes, stale DNSSEC signatures, expired RRSIGs
Check HTTP from 50 countries and Tor; catch TLS certificate expiry; share dashboards with clients • Also: ping, TCP, push
DNS Security Monitoring
Monitoring for domains you can't afford to screw up. Catches what other services miss
Parent Zone NS
Get alerted when nameserver records change at your registrar — catches unauthorised delegation changes.
Create NS Mon →Parent Zone DS
Get alerted when DS records change in the parent zone — catches unauthorised changes to your DNSSEC delegation.
Create DS Mon →Stale Signatures
Detect when signed zones aren't pushed to authoritative servers. Catch expiring signatures before they break DNSSEC validation.
Create DNSSEC Mon →Also available: General DNS queries with custom validations • DNS list queries for monitoring DNS-based lists
HTTP Monitoring
Multi-location HTTP monitoring with custom headers, body parsing and certificate validation. Monitor from different countries via Mullvad exit nodes or over Tor. Share dashboards with clients — no login required
Standard HTTP
Custom headers, request bodies, response validation, cert checks, JSON/HTML parsing. HEAD checks let you monitor TLS certificate expiration.
Create HTTP Mon →Additional Monitoring
Network and service availability monitoring
TCP Monitoring
Connect to arbitrary TCP ports. Monitor database servers, mail servers, SSH, or anything listening on a TCP port.
Create TCP Mon →Push Checks
Heartbeat monitoring for cron jobs and scheduled tasks. Get alerted when they stop running.
Create Push Mon →Built on Boring Tech
Uses Twisted and Python with proven command-line tools: drill for DNS, curl for HTTP, ping for ICMP, netcat for TCP. No containers, no exotic dependencies, no trendy frameworks. Runs on OpenBSD and FreeBSD.
Each monitoring check is called a "mon" • Read more about the tech stack
Alerts & Data Access
Get notifications via ntfy.sh, Atom feeds, or JSON endpoints for your own dashboards
Pricing
Standard monitoring with alerts
- 60s minimum interval
- Custom retry rules
- Notifications on failures
Monitoring with change notifications
- Everything in standard tier
- Notifications on changes (not just failures)
No account required • 14-day refund policy • Payments via Paddle
See real-world examples of monitoring setups for DNS security, HTTP checks from different locations, push checks for cron jobs and more.