What is Dynamic IP?

Before introducing Dynamic IP Proxy Service, we need to understand what is Dynamic IP. In simple terms, Dynamic IP means that the IP address assigned by an Internet Service Provider (ISP) to a user is not fixed, but changes with time and network connection. In contrast, a static IP is always the same.

Why do you need Dynamic IP Proxy Services?

When using the Internet, we often need to access some blocked or restricted access websites, such as domestic social media platforms, video websites and so on. And these websites usually have access control based on the user's IP address. If your IP address is blocked, you will not be able to access these websites. And dynamic IP proxy service can help us solve this problem.

What are the advantages of free dynamic IP proxy service?

There are many paid dynamic IP proxy services on the market, but we are going to introduce a free dynamic IP proxy service today. The biggest advantage of a free service over a paid service is that it is affordable. In addition, free services can also provide relatively good proxy speed and stability. Of course, the free service also has some disadvantages, such as relatively few proxy nodes, IP addresses are easy to be blocked, etc., but for the general use of the demand, the free service is sufficient to meet the demand.

How to use free dynamic IP proxy service?

Below we will present a sample code for a free dynamic IP proxy service implemented using Python.
"`ipipgothon
import requests
from bs4 import BeautifulSoup
def get_proxy().
“””
Get free proxies from proxy sites
“””
url = "https://www.shenlongip.com/nn/"
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ 58.0.3029.110 Safari/537.3"}
r = requests.get(url, headers=headers)
soup = BeautifulSoup(r.text, "html.parser")
table = soup.table
tr_list = table.find_all("tr")
for tr in tr_list[1:]:
td_list = tr.find_all("td")
ip = td_list[1].text
port = td_list[2].text
yield ip + ":" + port
def test_proxy(proxy).
“””
Test if the proxy is available
“””
proxies = {
"http": "http://" + proxy.
"https": "https://" + proxy
}
try.
r = requests.get("http://www.baidu.com", proxies=proxies, timeout=5)
if r.status_code == 200.
return True
else.
return False
except.
return False
def get_available_proxy().
“””
Getting Available Proxies
“””
proxy_list = []
for proxy in get_proxy()::
if test_proxy(proxy).
proxy_list.append(proxy)
return proxy_list
“`
The above code realizes to get free proxies from proxy websites (take ipipgo proxy as an example), then test whether the proxies are available or not, and finally return the list of available proxies. We can use these free proxies in crawlers and other scenarios to hide the real IP address.

concluding remarks

This article introduces what dynamic IP is, why dynamic IP proxy service is needed, the advantages of free dynamic IP proxy service and how to use free dynamic IP proxy service. We hope that readers will learn about Dynamic IP Proxy Service and be able to utilize it flexibly in practical scenarios through the introduction of this article.