Nmap Online Port Scan
Discover open ports. Protect your network, servers, and IT assets
65,536
TCP ports checked on every target in a full scan
1997
first released, and the standard port scanner ever since
The easiest way to run Nmap port scans
With HostedScan, run Nmap and other industry-standard scanners through an online dashboard. The platform adds full TCP and UDP port scanning, alerts when a new port opens, and the reporting SOC 2 and ISO 27001 auditors ask for.
All 65,536 TCP ports
A full scan checks every TCP port on every target
UDP scans too
A separate UDP scan type covers the services TCP scans miss
CIDR block scanning
Scan whole ranges to catch hosts that were not supposed to be exposed
Firewalled hosts too
Hosts that block ping are still scanned
New port alerts
Get notified when a port is open that was closed on the last scan
Nmap online port scan details
Nmap has been the standard port scanner since its first release in 1997. It discovers open ports on your servers, devices, and networks. HostedScan provides an online port scan powered by Nmap.
Port scanner use cases
Verify that only expected ports are open and no services or firewalls are misconfigured. Regular port scans are often required as part of certifications such as ISO 27001 and SOC 2.
How HostedScan runs Nmap
Full TCP scan:
Checks all 65,536 TCP ports on every target. Hosts are treated as alive even when they block ping, so firewalled servers are still scanned.
UDP scan:
A separate scan type for the most common UDP ports to find DNS, SNMP, NTP, and other services a TCP scan cannot see.
What a result looks like
Every open port becomes a risk on the target. Accept the ports you expect, and HostedScan alerts you when a scheduled scan finds a port that was closed last time.
Ready to run an Nmap scan in seconds?
Get the full power of Nmap without installing a thing. That's HostedScan.
Six scanners, one dashboard
Nmap plus five more scanners
Point more than one scanner at a target and work every finding from the same risk list.
Greenbone OpenVAS
Network CVEs and misconfigurations
Tenable Nessus
Network scanning on the Professional plan
Nuclei
Template-based CVE and exposure checks
OWASP ZAP
Web application and API scanning
SSLyze
TLS configuration and certificates
Benefits of using HostedScan
What HostedScan adds to Nmap
Mitigate security vulnerabilities
Discover CVEs, OWASP Top 10 vulnerabilities, and exploitable weaknesses across your entire infrastructure. Get prioritized remediation guidance with CVSS scoring and actionable risk classifications. Fix what matters first.
Manage your risk exposure
With regulations such as GDPR and CCPA, failure to maintain reasonable security procedures is grounds for lawsuits and fines.
Meet compliance requirements
Vulnerability scanning is essential for your compliance with SOC 2, ISO 27001, cyber insurance, and more.
Detect misconfigurations
90% of cyber attacks exploit simple misconfigurations, not zero-days. Detect exposed ports, weak credentials, outdated software, and common security gaps before attackers do: automatically, every day.
Map your attack surface
Your infrastructure changes constantly. Automatically discover and monitor all websites, servers, networks, and APIs, maintaining complete visibility of your attack surface without manual tracking.
14 days free. No credit card required.
See a sample reportOur Customers
5,000+ MSPs and IT teams who move faster
Quick Answers
Frequently asked questions
Our knowledge base contains answers to technical questions, and you can always contact us for more details on our plans, pricing, or any questions.
Speed and power,
without the complexity
The world's leading vulnerability scanners, all in one platform.