Crawler IP blocked how to do: rapid recovery and defense upgrade program

Why is your crawler IP always blocked? Find the root cause of the problem first

Many people in running data will suddenly find that the crawler does not work, this time do not rush to scold the site ruthless. First check these typical symptoms:Returns a 403 error code,CAPTCHA pops up frequently,No connection at all.. The most common reason is that the target website recognizes the crawler behavior by behavioral characteristics, such as abnormal access frequency, missing request header information, and IP address reuse.

Three Steps to Help: Rapid Recovery Program for Blocked IPs

Don't panic when it comes to IP blocking, this combo will help you get back to work fast:

Step 1: Get a new IP immediately
Use ipipgo's Residential Proxy IP Pool with 90 million+ real home network addresses switching at any time. It is recommended to choose dynamic residential IPs, which automatically change addresses with each request, just like real users constantly switching network environments.

Step 2: Pace your request
When reconnecting after a sudden block, first set theRandomized delay (2-8 seconds), to avoid exposing the crawler's characteristics with intensive requests in a short period of time. Pacing can be controlled with a code structure like this:

import random
import time

def request_page(url).
    time.sleep(random.uniform(2, 8))
     Send request code

Step 3: Refinement of request characteristics
A detail that many developers will overlook:
- Add full headers information (including Accept-Language, Referer, etc.)
- Regularly rotate the User-Agent libraries of the major browsers.
- Enable JavaScript rendering (especially important for pages that require JS execution)

Long-lasting defense upgrades: the right use of professional agents

If you want to solve the problem fundamentally, you need to establish a scientific agency management mechanism:

Special note: simultaneous maintenance is recommendedprimary IP poolrespond in singingSecondary IP PoolThe API interface of ipipgo supports real-time access to the list of available IPs, which facilitates automatic scheduling of the program.

Hands-on QA: The most common confusion developers encounter

Q: Can I solve the problem with a free proxy?
A: There are serious security risks in free proxies, and the actual test data shows that 78% free proxies have the risk of request hijacking or data leakage. It is recommended to choose ipipgo such professional service providers, residential IP pool through the home network environment certification, request success rate of up to 99.2%.

Q: How can I tell if the IP is blocked or the program is wrong?
A: Three-step test method:
1. Visit the target URL directly with your browser (remember to close developer tools)
2. Replace the IP address with a new one and retry the crawler.
3. Test the base connection in the server environment with the curl command

Q: Why is it still blocked even though I have used a proxy IP?
A: Two common scenarios:
- The data center IP used is monitored by the website
- Multiple users sharing the same IP outlet
At this point it is recommended to switch to ipipgo's exclusive residential IP, which uses the real home network address independently for each session.

Choosing the Right Tools: The Hidden Functions of Professional Agents

Many developers don't realize that ipipgo's proxy service also has these useful features built in:
- IP quality pre-testing: Automatically filter IPs that have been blacklisted by target websites
- Intelligent Routing: Automatically matches the optimal route according to the location of the target web server
- Consumption Early Warning System: Automatically send alerts when there is a spike in anomalous requests
These features can be enabled directly in the developer backend without writing additional detection code.

Lastly, a reminder: fighting against anti-climbing is a continuous upgrading process that requires both keeping technology up-to-date and adhering to industry norms. Choosing a service provider like ipipgo that supports multiple proxy types will allow you to have the right solution in different scenarios and focus your energy on core business development.