English English French French Spanish Spanish German German
Geekflare is supported by our audience. We may earn affiliate commissions from buying links on this site.
Share on:

8 Online Port Scanners to Find Opened Ports on Server and IP

port scanner 1
Invicti Web Application Security Scanner – the only solution that delivers automatic verification of vulnerabilities with Proof-Based Scanning™.

If you are hosting your web applications on managed or shared server, then you don’t have to worry about it.

However, for VPS or dedicated, you must consider doing all it takes to secure your server.

Having unwanted ports opened is a lousy idea; an attacker can take advantage of it in many ways.

opened-ports-danger

Here are online FREE tools, which will help you to find out what all ports are opened so you can review and block them if not needed.

Note: if you’re running a port scan on your website DNS and if that is behind the cloud proxy like Cloudflare or SUCURI, then it may not give you the accurate information.

TCP Port Scan with Nmap

Pentest Tools check open ports using NMAP on the targeted host.

pentest-tools-port-scan

In the light version, there is some limitation like it scan for up-to 100 top ports, single IP only. However, if you go for a full scan, then you can scan all 65,535 ports, detect OS and traceroute. And, if you need to export the scan results, then you can do so.

Geekflare’s Port Scanner API

Alternatively, you can try Geekflare Port Scanner API. It lists all the open ports on your website or IP within seconds.

geekflare port scanner api

But what’s even better is the free plan, which you can use for 3000 API requests without paying a penny. And should you feel to upgrade, premium ones start with 10K API calls for just $5 a month.

Online Port Scanner

This tool is a personal project of Javier Yanez, available to use in free to scan the ports against IPV4 or IPV6 address.

ipv6-scanner

Port Scanner by Hacker Target

Hacker Target lets you perform a quick scan with most standard following ten ports with a hosted NMAP port scanner.

  • FTP
  • SSH
  • SMTP
  • HTTP
  • HTTPS
  • RDP
  • POP3
  • IMAP
  • SMB
  • Telnet
hackertarget-nmap

They also got a premium version that offers the following.

  • Scan all ports
  • Scan on subnet
  • Schedule to run a daily scan and get notified for any changes

Port Scanner by DNS Tools

Quickly scan for some of the standard ports like FTP, SMTP, DNS, Finger, POP3, SFTP, RPC, IRC, IMAP, VNC, etc. through DNS Tools.

dns-tools

WhatIsMyIp

You can test for an individual port or by a package is free. However, for more like scanning the range of custom, you need to subscribe to their service.

whatismyip

The package is nothing but a group of relevant ports.

  • Basic – HTTP, POP3, MySQL, etc
  • Web – cPanel, DNS, WHOIS, TrelliSoft, TFTP, etc
  • Games – Call of Duty, Second Life, Xbox, Minecraft, etc
  • Malicious – Metaspoilt, Bagle virus, W32, etc

Web Port Scanner

Another scanner to check for common ports.

webportscanner

Conclusion

I hope the above tools help to find the opened ports on your domain or IP. Most of the web tools will have some limitations, so if you are looking for a heavy use port scanner, I would recommend using the software mentioned here. As you can notice, Nmap is an essential tool to scan the ports, and if you are looking to learn more about it, then check out this fantastic network security course.

Thanks to our Sponsors
More great readings on Security
Power Your Business
Some of the tools and services to help your business grow.
  • Invicti uses the Proof-Based Scanning™ to automatically verify the identified vulnerabilities and generate actionable results within just hours.
    Try Invicti
  • Web scraping, residential proxy, proxy manager, web unlocker, search engine crawler, and all you need to collect web data.
    Try Brightdata
  • Semrush is an all-in-one digital marketing solution with more than 50 tools in SEO, social media, and content marketing.
    Try Semrush
  • Intruder is an online vulnerability scanner that finds cyber security weaknesses in your infrastructure, to avoid costly data breaches.
    Try Intruder