Find open ports and running services (incl. versions), and do OS fingerprinting in a single TCP port check. Inspect Top 100 TCP ports for free or get a paid plan to automate and schedule extensive custom scans for even more ports.
Each Nmap port scan against a target IP address or hostname automatically maps the attack surface and gives accurate data for your reconnaissance work.
Our open port checker provides an easy and fast way to run an online Nmap scan with zero setup and maintenance. Compared to using Nmap on your local machine, it’s much more effective to check all open ports from our cloud platform because the TCP Scanner on our website gives you the external perspective of your target that any attacker has.
For even more effective port scanning, our tool supports scheduled and parallel scans (with notifications), automated Nmap scans with scan templates and pentest robots, and automatic attack surface mapping.
Scan IP addresses and hostnames in one click to get an aggregated view of all their open ports. Since our cloud platform has direct Internet connection, you get accurate findings fast from our portscanner that’s optimized for best performance and quality results.
Schedule periodic port scans to continuously monitor your target’s attack surface and proactively close exploitable security holes. Audit all network entry points available on a target system with auto-delivered reports and drill-down options with dedicated pentest tools.
Check if your firewall is correctly configured and if servers have unnecessary open TCP ports. By also looking at service versions, this open port finder indicates which server software is outdated and needs upgrading.
Detect live hosts and TCP services exposed to the Internet to map the network perimeter of your target much faster. Our TCP port checker tells you which machines are outdated and risk being exploited by attackers looking to gain access to the internal network.
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Accurate port scanning results
Information at a glance
Indispensable reports – without the noise
