PortScannerLabs
PortScannerLabs: A practical free check for common TCP exposure, with service detection and remediation guidance. Ranked #19 of 26 in Port Scanner Software by our editors (7.3/10); pricing: Free plan; best for quick free external exposure checks.
At a glance
- Editor score7.3 / 10
- PricingFree plan
- Best forQuick free external exposure checks
- Free planYes
- Paid fromFree
- DeploymentCloud
- Facts checked21 Sep 2026
Where it wins
- Scans public IPs or authorized domains without signup
- Detects services and versions on open ports
- Flags risky exposure with security guidance
Where it doesn't
- Checks a documented set of common TCP ports
- No API or scheduled scanning
- Web-only access limits platform coverage
Our verdict on PortScannerLabs
PortScannerLabs is a free, web-based port scanner for checking how a public IP address or authorized domain appears from the internet. It suits home users, small businesses, administrators, developers, gamers, and self-hosters who need a quick external view of common network exposure without installing software or creating an account. Results identify ports as open, closed, or filtered, making the tool useful for an initial review of internet-facing services.
Its standout capability is the combination of TCP port checks with service and version detection. When an open port is found, PortScannerLabs can identify the exposed service and version, then flag potentially risky services. The scanner also provides guidance for closing or securing open ports, giving users a practical next step after discovery. This makes it more informative than a basic open-or-closed port check, particularly when the goal is to review a home connection, self-hosted application, or small public deployment.
The trade-off is scope. PortScannerLabs checks a documented list of common TCP ports rather than offering full-range scanning of arbitrary targets, and its coverage is limited to the web interface. The product also does not provide API access or scheduled scanning, so it is not suited to recurring asset monitoring, automated workflows, or broader platform requirements. Choose it for occasional, authorized external exposure checks and straightforward findings; choose an alternative when you need comprehensive port coverage, continuous monitoring, integrations, or a larger security platform.
Your product? Our editors can test PortScannerLabs in depth and publish a review, labelled as paid · from $149/mo →
PortScannerLabs pricing
All 1 PortScannerLabs plans and prices →
PortScannerLabs fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Deployment | Cloud |
| Scan scope | Internet |
| Service detection | Yes |
| OS detection | Not verified |
| Scheduled scans | Not verified |
| API access | Not verified |
| Export formats | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | portscannerlabs.com |
| Facts checked | 21 Sep 2026 |
Alternatives to PortScannerLabs
- NmapA mature, broad port scanner with deep command-line capabilities and useful companion tools.9.4
- NaabuA free, CLI-focused scanner for internet-scale port and service discovery.9.1
- ScanSearchA cloud scanner for internet exposure, vulnerability matching, monitoring, and API-driven workflows.8.9
See all PortScannerLabs alternatives →
Used PortScannerLabs? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used PortScannerLabs for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
PortScannerLabs is listed in our Port Scanner Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/portscannerlabs/"><img src="https://www.itechguides.com/best/badge/portscannerlabs.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update