myaddress.is

Diagnostic tool

Open port checker

Check whether a port on your public IP — 216.73.217.14 — accepts connections from the outside. The quickest way to confirm a port-forward or an exposed service really works.

22 · SSH443 · HTTPS 8123 · Home Assistant5000 · Frigate 32400 · Plex25565 · Minecraft

How to read the result

openSomething on your IP is accepting connections on that port right now. Your port-forward works and the service is reachable.
closedYour IP answered, but nothing is listening on that port — usually a missing forward, a stopped service, or the wrong port number.
filteredNo reply at all. A firewall, your router, or your ISP is silently dropping the traffic before it reaches you.

When you'd use this

The most common reason is testing a port-forward. You've forwarded a port on your router to a device at home, and you need to know if the outside world can actually reach it — something you can't verify from inside your own network, because local traffic never leaves it.

It's the go-to check for self-hosted services: confirming a Home Assistant instance, a Plex or Jellyfin server, a game server, or a NAS is reachable before you hand out the address. If a remote connection is failing, this tells you in one step whether the problem is your network edge or something further in.

A note on CGNAT

If a port reads filtered no matter what you forward, your provider may put you behind carrier-grade NAT — you share one public IP with many customers and can't accept inbound connections at all. In that case a forward can't help; you'd need a static IP from your ISP, or a tunnel like Cloudflare Tunnel or Tailscale.

Frequently asked questions

My service is running but the port shows closed. Why?
Almost always the router: the port-forward is missing, points at the wrong internal IP, or forwards a different port than the one the service listens on. Double-check the forward, and make sure the device's local IP hasn't changed since you set it up.
What's the difference between closed and filtered?
Closed means your IP replied but nothing is listening — the door is there, no one answered. Filtered means nothing replied at all — a firewall dropped the knock silently. Filtered usually points to a firewall or CGNAT; closed points to the service itself.
Can I check a port on someone else's IP?
This tool only checks the IP you're connecting from — your own. Probing ports on addresses you don't control can be treated as hostile scanning, so keep it to your own network.
Does a closed port mean I'm secure?
It means nothing is reachable on that specific port right now, which is good hygiene for ports you're not deliberately exposing. Real security depends on what you leave open and how those services are configured — a single check isn't an audit.

Live tool. This runs a real connection attempt from the edge back to your IP and returns open / closed / filtered plus round-trip time. FAQ ships as FAQPage schema; page carries SoftwareApplication + BreadcrumbList.

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