Zillow Web Crawl: U.S. Residential IP for Real Estate Data

Why is Zillow always blocked? First of all, understand the doorway

Recently, a lot of friends who do real estate analysis complained to me, saying that using Python to climb Zillow data is more difficult than climbing to heaven. Just grabbed two pages on the prompt 403 error, change their home broadband IP and try again, well, directly blocked for 24 hours. This matter, I think, must start from the website protection mechanism - Zillow has aIP Behavioral Fingerprinting Librarythat specializes in identifying machine traffic.

Let's take a real example: Xiao Wang used the company's fixed IP to climb three times a day, the first two days went smoothly, but on the third day, he suddenly stopped. Later, he found out that Zillow had blacked out the IP segments that he visited continuously, and other people in the company's intranet suffered as well. At this time, if you use theResidential Proxy IP for ipipgo, the situation is very different.

Second, the residential agent IP is the hard truth

There are three types of common agents in the market, let's use the table to compare more intuitive:

ipipgo's residential agent has a specialty - every request is characterized by a real home broadband network. Let's just say that when Zillow sees a visit from an "old lady in California checking the price of a house," it doesn't realize that it's a robot doing the work.

Third, hand to teach you to configure the agent

Here's a live Python example, using the requests library + ipipgo proxy:

import requests

proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:端口',
    'https': 'http://用户名:密码@gateway.ipipgo.com:端口'
}

headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
}

response = requests.get('https://www.zillow.com/homes/',
                       proxies=proxies,
                       headers=headers,
                       headers=headers, timeout=15)

Note the three main points:
1. Each requestUser-Agent must be changed
2. Do not set the timeout to exceed 15 seconds
3. Use the ipipgo backend to provideDynamic port rotationfunctionality

IV. A guide for veteran drivers to avoid pitfalls

I stepped on these mines last year while helping a real estate company with data collection:
- Too short an interval between successive visits (3-5 seconds random delay recommended)
- JavaScript rendering page not handled (on headless browsers)
- Didn't deal with captcha popups (available on ipipgo)Real Verification Service)

There's an evil thing: once I used a certain proxy, it showed a US IP, but Zillow returned a German page. Then I switched to ipipgo.Precision targeting of agent pools, assigning state-city-zip code three levels of localization, and no more trouble.

V. A large collection of practical QA

Q: What should I do if I slow down after using a proxy?
A: Go with ipipgo'sExclusive High Speed AccessDon't try to be cheap and use a shared pool. The actual download speed can reach 2MB/s, which is enough!

Q: How do I verify if the agent is in effect?
A: Visit https://ip.ipipgo.com/checkip first to see if the returned IPs and localization are correct

Q: How much IP volume is needed per day?
A: According to experience, 10,000 pieces of data need about 50 quality residential IP rotation. ipipgo new users to send 100 IP trial, it is recommended to test first!

The last nagging sentence is true: the matter of crawling data, three parts rely on technology and seven parts rely on tools. Use ipipgo'sResidential Agent + Intelligent Dispatch SystemIf you use a basic anti-climbing strategy, Zillow data is basically a dish on a plate. There are back to the company's new interns do not believe in evil, non-free proxy hard just, the results of triggering the site protection was chasing claims, this thing can be a negative example to speak for three years.