PortScannerLabs
portscannerlabs.com
What it is
PortScannerLabs is a free cloud web tool for checking an IP address or domain for common open, closed, or filtered network ports. It flags risky exposures and separates port state from risk level, with links to guidance about the service and ways to close it. The scanner uses nmap with service and version detection for open ports. A default scan checks 12 common TCP ports, including SSH, Telnet, MySQL, RDP, HTTP, and HTTPS. Leaving the target blank scans the user’s public IP as seen from outside the network. Scans with version detection can take up to 15 seconds. No account, signup, or installation is required. The site describes the tool for home and small-business users, IT administrators, developers, gamers, and self-hosters. Users must confirm authorization before scanning another target. PortScannerLabs rate-limits scans and restricts full-range scanning of arbitrary targets for anonymous users. It says it retains only minimal technical logs needed to operate the service and prevent abuse, and does not sell personal data. The Free port scanner costs nothing.
Spec sheet
- What it does
- PortScannerLabs scans an IP address or domain for common open, closed, or filtered network ports and flags risky exposures.Read 9 Oct 2026 · portscannerlabs.com
- Intended users
- The site describes the tool for home and small-business users, IT administrators, developers, gamers, and self-hosters.Read 9 Oct 2026 · portscannerlabs.com
- Privacy
- The site says it keeps only minimal technical logs needed to run the tool and prevent abuse, and does not sell personal data.Read 9 Oct 2026 · portscannerlabs.com
- Abuse controls
- The site says it rate-limits scans and does not run aggressive full-range sweeps for anonymous users.Read 9 Oct 2026 · portscannerlabs.com
- Access
- The scanner requires no signup, account, or software installation.Read 9 Oct 2026 · portscannerlabs.com
- Authorization
- Users must confirm they are authorized before scanning a target other than their own connection.Read 9 Oct 2026 · portscannerlabs.com
- Default target
- Leaving the target blank scans the user's public IP as seen from outside their network.Read 9 Oct 2026 · portscannerlabs.com
- Ports checked
- The default scan checks 12 common TCP ports, including SSH, Telnet, MySQL, RDP, HTTP, and HTTPS.Read 9 Oct 2026 · portscannerlabs.com
- Risk guidance
- Results separate port state from risk level, and risky findings link to guides explaining what the service is and how to close it.Read 9 Oct 2026 · portscannerlabs.com
- Scan duration
- The site says scans can take up to 15 seconds with version detection.Read 9 Oct 2026 · portscannerlabs.com
- Scanning engine
- The scanner uses nmap with service and version detection for open ports.Read 9 Oct 2026 · portscannerlabs.com
Plans and prices
Free port scanner Free No signup · scans common TCP ports · full-range scanning of arbitrary targets restricted Read 9 Oct 2026 · portscannerlabs.com
Strong points and limits
Strong points
- No signup, account, or installation
- Checks common TCP ports with nmap
- Shows port state separately from risk
- Provides guidance for risky findings
- Scans a blank target as your public IP
Limits
- Default scan covers only 12 ports
- Scans can take up to 15 seconds
- Anonymous full-range target scans are restricted
- Authorization confirmation is required for other targets
Who it suits
PortScannerLabs suits people checking their own internet-facing services, including home users, small businesses, administrators, developers, gamers, and self-hosters. It is designed for quick common-port checks without installing software.
Verdict
PortScannerLabs offers a straightforward common-port exposure check from the browser, with service detection and risk guidance. Its scope and abuse controls limit anonymous scans to safer, narrower use.
Where Specifiction places it
- Port Scanner Software#20 of 267.2
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