Port Checker
networkingCheck if a TCP port is open on a remote host.
Part of Nexabit Network Utilities — browser diagnostics by Nexabit IT Solutions. API pricing · Developer login
What this tool does
Check if a TCP port is open on a remote host.
Best for
Engineers and operators working on connectivity and IP troubleshooting.
Common use cases
- Run Port Checker during incident response or change validation
- Export results as JSON for tickets and runbooks
- Combine with related tools on the same category page
Port Checker
Results
Frequently Asked Questions
Port Checker is a browser-based utility on Nexabit Network Utilities. Check if a TCP port is open on a remote host.
Use Port Checker when you need to check if a TCP port is open on a remote host. Browser access on Nexabit Network Utilities requires no account.
Yes. Port Checker is available via the gated Developer API at /api/v1/network/port-check. Sign in at /developers/login, verify your email, and create an API key on an active plan.
Port Checker can be used in your browser without a developer account. Programmatic access via the Developer API requires a logged-in account and an active API plan — see /pricing.
Port Checker is part of Nexabit Network Utilities, built and maintained by Nexabit IT Solutions.