How to Scrape Without Captcha: The Developer's Guide to Configuring 5G Mobile Proxies

The Mechanics of IP Blocking: How Anti-Bots Identify Your Scripts

Modern anti-bot solutions like Cloudflare, DataDome, or Akamai no longer analyze just your HTTP headers or browser fingerprints (Browser Fingerprinting). They primarily monitor the reputation and behavior of your IP address.

IP addresses originating from datacenters (such as AWS, GCP, or DigitalOcean) have a trust score (Trust Score) close to zero. No "normal" human user navigates the web from a cloud server. Consequently, any request coming from these IP ranges is immediately blocked or confronted with a captcha.

The Wall of CGNAT: The Secret of Mobile Invisibility

Due to the global shortage of IPv4 addresses, mobile operators (Orange, SFR, Free, Bouygues) do not assign a unique public IP address to each connected smartphone. Instead, they use CGNAT (Carrier-Grade NAT) to share a single public IP address among thousands of real mobile users simultaneously.

For a security system like Cloudflare (as explained in the Cloudflare technical documentation), blocking a suspicious mobile IP address is extremely risky. If a filter blocks the IP 90.84.14.112 because a robot uses it, it instantly blocks thousands of real Orange customers browsing on that same IP in the same geographic area at the same time.

By using a 5G mobile proxy, you inherit this shield. Anti-bots are forced to lower their guard and let your requests through to avoid destroying the experience of potential real customers.

IP Rotation via API: Forcing Cellular Renewal

Although mobile IPs are ultra-robust, sending millions of repetitive requests to the same server with the same IP address will eventually trigger rate limiting and behavioral alerts. This is where IP rotation comes in.

With Proxym, you control a dedicated physical router. When you call our rotation API, the router physically disconnects from the mobile cell tower for 3 seconds, then reconnects. The operator (for example, Free Mobile or Orange) sees a new device connecting to the network and assigns it a fresh, different public IP address.

const puppeteer = require('puppeteer');

async function scrapeWithRotation() {
  // 1. Request a new IP from the router
  await fetch('https://api.proxym.io/v1/proxies/rotate', {
    method: 'POST',
    headers: { 'Authorization': 'Bearer YOUR_API_KEY' }
  });
  
  // Wait 8 seconds for the router to reconnect to the cell tower
  await new Promise(resolve => setTimeout(resolve, 8000));

  // 2. Launch the browser with the Proxym proxy
  const browser = await puppeteer.launch({
    args: ['--proxy-server=http://proxy.proxym.io:8080']
  });
  
  const page = await browser.newPage();
  await page.authenticate({
    username: 'your_username-port-9081',
    password: 'your_password'
  });

  await page.goto('https://target-website.com');
  await browser.close();
}

# settings.py
DOWNLOADER_MIDDLEWARES = {
    'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': 110,
    'myproject.middlewares.ProxymProxyMiddleware': 100,
}

# middlewares.py
class ProxymProxyMiddleware:
    def process_request(self, request, spider):
        # Basic authentication integrated into the request header
        request.meta['proxy'] = "http://proxy.proxym.io:8080"
        # Base64 encode credentials: username-port-9081:password
        request.headers['Proxy-Authorization'] = b'Basic dXNlcm5hbWUtcG9ydC05MDgxOnBhc3N3b3Jk'

Best Practices for Configuring Scrapy, Puppeteer, and Playwright

To maximize the effectiveness of your 5G mobile proxies, follow these critical configuration rules:

• Use HTTP CONNECT (or SOCKS5) Protocol: This allows for fully encrypted end-to-end traffic. Target site firewalls will never see the proxy authentication headers.
• Handle Rotation Latency: A cellular reconnection takes between 5 and 10 seconds. Your scripts must catch temporary connection errors during this phase and retry the request once the tunnel is re-established.
• Prevent WebRTC Leaks: Disable WebRTC in your headless browser (Puppeteer/Playwright) to prevent the target site from discovering your real local IP address behind the proxy.

Switch to Undetectable Scraping Today

Modern scraping is no longer a cat-and-mouse game of buying millions of disposable, dirty IPs. It is a question of infrastructure quality. By combining the power of French mobile CGNAT and Proxym's programmable rotation, you natively bypass anti-bots and reduce your script maintenance costs to zero.

FAQ: Scrape Without Captcha

Why do datacenter proxies fail on Cloudflare?

Because Cloudflare knows all the IP ranges of cloud providers. Proxym uses mobile SIM cards from consumer operators (Orange, SFR, Free) that have an impeccable reputation.

What is the reconnection speed after an IP rotation?

A complete rotation (disconnecting and reconnecting the RUTX11 modem to the cell tower) takes between 6 and 10 seconds depending on the local operator.

Can I target a specific city in France for my proxies?

Yes. Our physical routers are distributed across several major French cities (Marseille, Paris, Bordeaux, Lyon) and you can target a city by adding the tag -city-[name] in your connection identifier.