---
title: "Port Checker: Check whether a TCP port is open on any…"
canonical: "https://openvibe.tools/tool/port"
updated: null
---

# Port Checker: Check whether a TCP port is open on any…

HTML: [Port Checker: Check whether a TCP port is open on any…](https://openvibe.tools/tool/port)

# Port Checker

Test whether a port accepts connections from the public internet — the definitive check on whether a port forward, firewall rule or service binding actually works.

- **Limits** No file upload · Up to 120 runs a day
- **Where it runs** Runs on our server; no file is uploaded.
- **Cost** Free, with the limits above. No account needed.

 [Open Port Checker](https://port.openvibe.tools/) 

## Where to find it

Every address below opens the same tool. The first address is the one to bookmark and share.

- [port.openvibe.tools](https://port.openvibe.tools/)Primary

## People also call this

**What it's for:** Check whether a TCP port is open on any host, from outside your network. Test common services or any custom port. Instant.

**What trips people up:** **My service runs but the port shows closed — why?** Either a firewall is dropping the traffic, the port forward is missing, or the service is bound to localhost instead of all interfaces.

- port checker
- open port test
- port scanner online
- check port open
- tcp port test

## Use it from code

- `POST https://openvibe.tools/api/v1/tools/port/run`
- Needs a token with `tools.net.probe`, granted to partners only; people use the page.
- It answers with the result.

~~~~
curl -X POST https://openvibe.tools/api/v1/tools/port/run \
  -H 'Authorization: Bearer $OPENVIBE_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"input":{"target":"example.com"}}'
~~~~

Inputs: [JSON Schema](/api/v1/tools/port/schema) · [OpenAPI](/api/v1/openapi.json) · from JavaScript: `tools.run("port", …)` in [openvibe-sdk](https://github.com/OpenVibers/OpenVibe.SDK) · [How the API works](/developers)

## Similar tools

[All Network Tools](/network-tools)

[ **Domain & IP Lookup** Look up everything about a domain or IP in one go: DNS *lookup.openvibe.tools*](https://lookup.openvibe.tools/) [ **What Is My IP** See your public IP address, ISP, approximate location and *myip.openvibe.tools*](https://myip.openvibe.tools/) [ **IP Address Lookup** Look up any IP address to see its owner, network, *ip.openvibe.tools*](https://ip.openvibe.tools/) [ **IPv4 Lookup & CIDR Calculator** Look up IPv4 addresses and calculate CIDR subnets: network *ipv4.openvibe.tools*](https://ipv4.openvibe.tools/) [ **IPv6 Lookup** Look up IPv6 addresses, expand or compress notation, and *ipv6.openvibe.tools*](https://ipv6.openvibe.tools/) [ **IP Geolocation** Find the country, region, city, timezone and coordinates *geoip.openvibe.tools*](https://geoip.openvibe.tools/)

## The rest of OpenVibe

5 links

One account works on every site. Open source and community-run.

[**OpenVibe.Live** Live streams, clips and chat](https://openvibe.live/) [**OpenVibe.Community** Pastes, posts and people](https://openvibe.community/) [**OpenVibe.Games** Browser games](https://openvibe.games/) [**OpenVibe.Media** VODs, clips and files](https://openvibe.media/) [**OpenVibe.Network** One account for every site](https://openvibe.network/)