Check IP Address - Proxy Server?

Posted on 2009-12-30
Last Modified: 2012-05-08
Is there a way to check if an IP address is a known proxy server without the port number?
Question by:disciple_of_chim-chim
    LVL 70

    Expert Comment

    by:Chris Dent

    By known do you mean public proxy? Or are you after the proxy software?


    Author Comment

    Im trying to establish if an IP comes back to a proxy server, public or otherwise. There are apps that hide the real IP address, Im trying confirm or deny that is the case. There are sites that check IPs for this but it has to be in IP:port format.
    LVL 70

    Accepted Solution


    You may get a bit of luck with Reverse Lookups on the IP address, but I suspect it won't be conclusive in a lot of cases.

    You won't be able to find the proxy port without being familiar with the proxy itself. You could guess at 8080, but it would only be a guess.

    Doesn't get you all that far I'm afraid. I can't see much of a way to find that information out. You may try finding some server side code to run on your web server(s) to detect a proxy.


    Featured Post

    Free Trending Threat Insights Every Day

    Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

    Join & Write a Comment

    Configuring network clients can be a chore, especially if there are a large number of them or a lot of itinerant users.  DHCP dynamically manages this process, much to the relief of users and administrators alike!
    In this sixth video of the Xpdf series, we discuss and demonstrate the PDFtoPNG utility, which converts a multi-page PDF file to separate color, grayscale, or monochrome PNG files, creating one PNG file for each page in the PDF. It does this via a c…
    Here's a very brief overview of the methods PRTG Network Monitor ( offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

    729 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    19 Experts available now in Live!

    Get 1:1 Help Now