Scraper Blocking Knowledgebase

Response error code 444 means the server has unexpectedly closed connection. This could mean the web scraper is being blocked.

Response error code 429 means the client is making too many requests in a given time span and should slow down. Here's how to avoid it.

Response error 502 generally means the server cannot create a valid response. This could also mean the client is being blocked. Here's how to fix it.

Response error 503 generally means the server is temporarily unavailable however it could also mean blocking. Here's how to fix it.

Response error 403 generally means the client is being blocked. This could mean invalid request options or blocking. Here's how to fix it.

Response error 499 generally means the server has closed the connection unexpectedly. This could mean the client is being blocked. Here's how to fix it.

Perimeter X is a popular anti-scraping protection service - here's how to avoid it when web scraping.

Cloudflare error 1020 access denied is a common web error when web scraping caused by Cloudflare anti scraping service. Here's how to avoid it.

Cloudflare is a popular anti web scraping service and errors 1006, 1007 and 1008 are popular web scraping blocking errors. Here's how to avoid them.

Cloudflare is a popular web scraping blocking service and error 1009 access denied is a popular error for web scraper blocking. Here's how to avoid it.

Cloudflare is a popular web scraping blocking service and error 1015 "you are being limited" is a popular error for web scraper blocking.

Cloudflare is a popular web scraping blocking service and error 1010 access denied is a popular error for web scraper blocking. Here's how to avoid it.

Related Blog Posts

How to Avoid Scraper Blocking when Scraping Images
How to Avoid Scraper Blocking when Scraping Images

Introduction to scraper blocking when it comes to image scraping. What are some popular scraper blocking techniques and how to avoid them.

How to Bypass Imperva Incapsula when Web Scraping in 2023
How to Bypass Imperva Incapsula when Web Scraping in 2023

In this article we'll take a look at a popular anti bot service Imperva Incapsula anti bot WAF. How does it detect web scrapers and bots and what can we do to prevent our scrapers from being detected?

How to Bypass Datadome Anti Scraping in 2023
How to Bypass Datadome Anti Scraping in 2023

In this article we'll take a look at a popular anti bot service Datadome Anti Bot firewall. How does it detect web scrapers and bots and what can we do to prevent our scrapers from being detected?

How to Bypass Akamai when Web Scraping in 2023
How to Bypass Akamai when Web Scraping in 2023

In this article we'll take a look at a popular anti bot service Akamai Bot Manager. How does it detect web scrapers and bots and what can we do to prevent our scrapers from being detected?

How to Bypass PerimeterX when Web Scraping in 2023
How to Bypass PerimeterX when Web Scraping in 2023

In this article we'll take a look at a popular anti scraping service PerimeterX. How does it detect web scrapers and bots and what can we do to prevent our scrapers from being detected?

How to bypass Cloudflare when web scraping in 2023
How to bypass Cloudflare when web scraping in 2023

Cloudflare offers one of the most popular anti scraping service, so in this article we'll take a look how it works and how to bypass it.

How to Rate Limit Async Requests in Python
How to Rate Limit Async Requests in Python

Quick tutorial on how to limit asynchronous python connections when web scraping. This can reduce and balance out web scraping speed to avoid scraping pages too fast and blocking.

Web Scraping With Node-Unblocker
Web Scraping With Node-Unblocker

Tutorial on using Node-Unblocker - a nodejs library - to avoid blocking while web scraping and using it to optimize web scraping stacks.

How to Scrape Without Getting Blocked? In-Depth Tutorial
How to Scrape Without Getting Blocked? In-Depth Tutorial

Tutorial on how to avoid web scraper blocking. What is javascript and TLS (JA3) fingerprinting and what role request headers play in blocking.

How TLS Fingerprint is Used to Block Web Scrapers?
How TLS Fingerprint is Used to Block Web Scrapers?

TLS fingeprinting is a popular way to identify web scrapers that not many developers are aware of. What is it and how can we fortify our scrapers to avoid being detected?

How to Avoid Web Scraper IP Blocking?
How to Avoid Web Scraper IP Blocking?

How IP addresses are used in web scraping blocking. Understanding IP metadata and fingerprinting techniques to avoid web scraper blocks.

How Headers Are Used to Block Web Scrapers and How to Fix It
How Headers Are Used to Block Web Scrapers and How to Fix It

Introduction to web scraping headers - what do they mean, how to configure them in web scrapers and how to avoid being blocked.

How Javascript is Used to Block Web Scrapers? In-Depth Guide
How Javascript is Used to Block Web Scrapers? In-Depth Guide

Introduction to how javascript is used to detect web scrapers. What's in javascript fingerprint and how to correctly spoof it for web scraping.

Best Proxy Providers for Web Scraping (2023 Update)
Best Proxy Providers for Web Scraping (2023 Update)

Analysis and comparison of some of the most popular proxy providers. What makes a good proxy providers? What features and dangers to look out for?

Top 5 Residential Proxy Providers for Web Scraping
Top 5 Residential Proxy Providers for Web Scraping

Residential proxies are the most popular type of proxies used in web scraping. What makes a good residential proxy and what providers are the best?