Check which TCP ports are open and exposed on your public IP address. Identify services visible from the internet on your connection — instantly, free, no sign-up.
Scanning Your Public IP
Detecting…
For security, this tool only scans your own public IP — the one you're connecting from. You cannot scan third-party hosts.
No public IP detected. Your connection appears to be behind NAT, a VPN, or a private network — there's no public-facing IP to scan from here. Try again on a different connection, or disable your VPN.
Scan Options
Comma-separated ports and/or ranges — e.g. 22,80,443,8080-8090. Server caps at 100 ports per scan.
0
Open
0
Scanned
Target IP
—
✓
No Open Ports Found
No common ports are open or exposed on your public IP — good! Your connection looks clean from the outside.
Port
Service
State
What do these states mean?
open
OpenA service is actively listening on this port and accepting connections. Visible from the internet — review if unexpected.
closed
ClosedThe port is reachable but no service is listening. Not a risk, but confirms the host is up.
filtered
FilteredA firewall or device is blocking probes — state is indeterminate. Typically means the port is protected.