Loading...
Please wait while we fetch the data
Please wait while we fetch the data
Expose open network vectors and verify firewall integrity across essential protocol endpoints.
Our Open Port Scanner is a network diagnostic tool that checks a server or IP address for open TCP ports. It helps administrators and security professionals identify which services are running (like web servers, mail servers, or databases) and verify if firewalls are correctly configured. By sending connection requests to common ports, it determines if they are "Open" (accepting connections), "Closed" (rejecting connections), or "Filtered" (dropped by a firewall). This is an essential first step in securing any network infrastructure.
Enter the domain name or IP address you want to scanSelect whether to scan common ports or a specific rangeOur server attempts to establish a TCP connection to each portBased on the server's response (ACK, RST, or Timeout), we determine the statusResults are displayed in a clear list showing the service on each portSecurity recommendations are provided for open insecure ports
Discover unintended open ports, verify firewall rules, and identify outdated services.
Confirm web server availability, troubleshoot email connectivity, and debug application issues.
Test ISP port blocking, verify VPN port forwarding, and check game server connectivity.
We don't log or store any IP addresses or search queries. Your privacy is hard-coded into our architecture.
All data is transmitted over encrypted HTTPS with TLS 1.3, ensuring end-to-end security.
Results are generated in real-time through temporary memory, never written to persistent disks.
A "Filtered" status usually means a firewall is blocking the port. Our scanner sent a request but received no reply at all (it timed out). This is good for security, as it means the existence of the service is hidden. "Closed" means the server actively replied saying "nothing is listening here," while "Open" means a service accepted the connection.
It depends on the server's purpose. A web server should have ports 80 (HTTP) and 443 (HTTPS) open. An email server needs 25, 587, or 465. A database server might need 3306 (MySQL). Generally, you should follow the "principle of least privilege" and close ALL ports except the specific ones you need for your services.
Port scanning itself is generally not illegal in many jurisdictions, as it's essentially just "knocking on doors" to see if they open. However, scanning networks you do not own without permission can be considered suspicious activity, may violate ISP terms of service, and could be a precursor to a cyberattack. Always get permission before scanning external networks.
A professional collection of diagnostic tools engineered for maximum visibility.
The most accurate geolocation engine. Discover ISP data, ASN ownership, and physical location mapping for any IPv4 or IPv6 address.
Scan across 120 global blocklists to verify server reputation.
Pull full A, MX, TXT, and CNAME records from any domain root.
Expose domain registration details and expiration cycles.
Ensure search engine discoverability. Check sitemap protocol, detect missing routes, and optimize indexing potential.
Identify hardware manufacturers from address OID prefixes.
Detect transparent proxies and VPN tunnel leakage points.
Audit open network ports for common vulnerabilities (80, 443, 22).
CIDR math for network planning and subnet masking.
Extract the server-side IP of any hosted web application.
Convert DOCX, PDF, and HTML to clean Markdown syntax.
Global latency monitoring with stability jitter analysis.