How to detect whether a proxy IP is anonymous or not: anonymity level testing methods

First, understand the proxy IP anonymity level

Proxy IP anonymity is like going out in a vest, and there are three main types:Transparent Agent(Vest with ID number printed on it),General anonymous(Vest style plain) andHighly anonymous(Customized Cloak and Dagger). What we want to test is whether the proxy IP has exposed the real identity information, especially the X-Forwarded-For and Via fields in the HTTP header.

II. Three quick tricks to detect anonymity

Tip #1: Look at website feedback
Find a random website that displays IPs (such as the IP detection page on the ipipgo website), access it with a proxy and see what shows up. If two IP addresses appear, it means the proxy server is showing your real IP as a little tail.

Tip #2: Check HTTP headers
Grab the packet with developer tools (F12) and focus on these fields:
- X-Forwarded-For: the presence of a real IP is a transparent proxy
- Via: with proxy server information is a normal anonymous
- It's a real high stash if neither of the above fields exists.

 Python sample code to detect the header
import requests
proxies = {"http": "http://代理IP:端口"}
resp = requests.get("http://httpbin.org/headers", proxies=proxies)
print(resp.text) see if there is any exposure information in the returned header

Tip #3: Port Characterization
High-stash proxies often use non-standard ports (e.g., 3000-5000 range), while transparent proxies often use 80/8080, which are common ports. However, this method can only assist in the judgment, the specific also need to combine the first two strokes.

III. Comparison table of anonymity levels

IV. Practical tips for using ipipgo

Take ipipgo's Dynamic Residential Proxy for example, their high stash proxy automatically filters sensitive headers. You can do this when testing:
1. Select "High anonymity mode" in the client.
2. Visit http://httpbin.org/ip
3. Compare the displayed IPs with the proxy IPs
If you encounter inconsistent display, remember to check if you have a browser plugin on (e.g., some ad-blocking tools can modify the request header)

V. Frequently Asked Questions QA

Q: Can I achieve high anonymity with a free proxy?
A: Nine out of ten free pits, most free agents either limit speed or secretly record logs. It is recommended to use ipipgo's static residential package directly, 35 dollars/IP/month also with traffic protection.

Q: Highly anonymous proxies are 1001 TP3T safe?
A: Just like wearing a mask to go out is not absolutely invisible, but also be careful not to use the browser fingerprints, cookies, these will reveal the identity of the function. If you use ipipgo client, it comes with anti-leakage settings.

Q: How do I choose the best value for my package?
A: personal testing with dynamic residential standard version ($ 7.67 / GB), enterprise-level business choose enterprise version dynamic ($ 9.47 / GB), the need for fixed IP and then on the static package.

VI. Recommendations for testing tools

In addition to writing your own code for testing, these two online tools are recommended:
- IP detection page on the ipipgo website (comes with proxy detection)
- Anonymity test for whoer.net (note the need to hook up proxy access)
These tools will directly display your proxy anonymity level and also see details such as whether DNS is leaking or not.