How to unblock an IP address

Common reasons and risk characteristics for IP address blocking

IP address blocking is usually triggered by the target server's anti-crawling mechanism, network security policy or regional restrictions. The core causes include:

High-frequency access behavior: The same IP makes excessive requests in a short period of time (e.g., more than 10 times per second)

Abnormal traffic characteristics: fixed request interval, lack of browser fingerprint, incomplete header information

Geofencing restrictions: some services are only accessible to IP addresses in certain countries

Protocol violation: Violation of the website's robots.txt rules or terms of service (such as automatic account registration)

A typical blockade is characterized by the following responses:

HTTP 403 Forbidden or 429 Too Many Requests status code

CAPTCHA verification codes pop up frequently

The service response delay increases (more than 5 seconds)

Access to certain functional modules is restricted (e.g. unable to load price data)

Four-step diagnostic method to confirm IP blocking status

1. Basic connectivity test

ping target-domain.com

traceroute target-domain.com

If "Request timed out" or abnormal hops occur, the network layer may be blocked.

2. Multi-environment cross-validation

Use mobile networks and different Wi-Fi environments to access target services

Test access through an online proxy tool such as HideMyAss

Compare the differences in access status before and after VPN switching

3. Protocol-level detection tools

Analysis of curl command:

curl -v -A "Mozilla/5.0" https://target-domain.com

Check whether the X-Forwarded-For, CF-RAY and other fields in the returned header contain proxy features.

Browser developer tools:

Monitor the Waterfall timing in the Network panel to identify intercepted request chains.

4. Third-party testing platform

Use tools such as IPQS (IP Quality Score) or Scamalytics to check the IP reputation score (if the score is below 85, it may be flagged).

Technical solutions for removing IP blocking by scenario

Scenario 1: Enterprise-level data collection ban

Solution:

Dynamic proxy pool construction:

Use abcproxy residential proxy service and configure automatic IP rotation rules (such as changing IP every 50 requests)

Example configuration:

import requests

proxies = {

"http": "http://user:pass@gateway.abcproxy.com:8000",

"https": "http://user:pass@gateway.abcproxy.com:8000"

}

response = requests.get(url, proxies=proxies, timeout=10)

Traffic feature camouflage:

Set the randomization request interval (1-30 seconds normal distribution)

Load 2000+ User-proxy rotation library

Enable TLS fingerprint obfuscation technology

Scenario 2: Social media account unblocking

Operation process:

Clear local browser fingerprints (including Cookies, LocalStorage)

Get a new IP through abcproxy static ISP proxy (it is recommended to choose the same IP segment as the account registration location)

Use a new device fingerprint to log in (recommended with Multilogin or Linken Sphere)

Gradually resume account activity (operations on the first day should not exceed 20% of the usual frequency)

Scenario 3: Cross-border service access restrictions

Breakout strategy:

Protocol tunnel construction:

Use Shadowsocks over WebSocket protocol to penetrate firewalls and optimize links with Singapore/Japan data center proxies

DNS Pollution Avoidance:

Configure DoH (DNS-over-HTTPS) to use Cloudflare or Google's encrypted DNS service

Six technical measures to prevent IP blocking in the long term

Hierarchical proxy architecture:

Build a two-layer forwarding model of "residential proxy (entry layer) → data center proxy (processing layer)" to physically isolate the business IP and the target server

Intelligent traffic scheduling algorithm:

if response time > 2s:

Reduce request concurrency by 50%

Switching to the backup proxy pool

elif a verification code appears:

Enable OCR recognition module

Inject mouse movement trajectory parameters

Hardware fingerprint simulation:

WebGL renderer fingerprint randomization

Canvas noise injection (difference > 5%)

Audio context fingerprint obfuscation

Protocol stack deep customization:

Modify TCP Window Scaling

Randomized Initial Sequence Number (ISN) Generation Algorithm

Enable HTTP/2 protocol multiplexing

Dynamic management of blacklist and whitelist:

Establish an IP reputation evaluation system to automatically move proxy IPs with abnormal responses into a cooling pool (cooling time ≥ 4 hours)

As a professional proxy IP service provider, abcproxy provides a variety of high-quality proxy IP products, including residential proxy, data center proxy, static ISP proxy, Socks5 proxy, unlimited residential proxy, suitable for a variety of application scenarios. If you are looking for a reliable proxy IP service, welcome to visit the abcproxy official website for more details.