TCP Monitoring
Know when a service's port stops accepting connections.
A TCP monitor connects to a host and port from each region you assign and records whether the connection succeeded and how long it took. For TLS-wrapped services and real request/response checks, see Advanced TCP Monitoring.
What it detects
- A port that stops accepting connections
- Rising connect times
- A path that fails from one region but not another
How you're alerted
- A ready-made “TCP Down” rule is attached automatically.
Notifications go to any of 8 channels — see notifications.
- Runs from
- Every probe region you assign — down only when all of them agree
- Dashboard
- Uptime, connect time p50/p95/p99, status per probe location, SLA status and recent results
- Available on
- Free, Professional · Enterprise and Custom on request
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Start monitoring everything in minutes
Create a free account, add your first check and get alerted the moment something breaks — no credit card required.