How to Prevent Web Scraping from Being Blocked with IP Rotation


Dealing with scraping projects, whether for your business or for your clients, you have most probably faced situations, when your scrapers were blocked by targeted sites. So, you have probably wondered how to get around being blocked and prevent your web scraping project from failing. Naturally, every site values its content and tries to stop web scraping bots as soon as notices them. Noting the IP address, the bot comes from, they add it to a block list, either for some time or forever. Knowing that the experience when websites block content scraping can be quite frustrating, we’ve made up our mind to share the easy ways to fix it.

How to Prevent Website Scraping Block

The developers work on both sides: while some of them actively work to prevent websites from scraping, there are many similar specialists on the other side who create strategies to get around website block and build software solutions that are almost impossible to detect. Additionally, check some quick tips on how to prevent getting blacklisted while scraping with IP Rotation. Since the sites detect crawlers by their IP examining, a workable strategy to avoid being blocked is using a web scraper that operates in the cloud. It will not run off your local IP address. Another method to get around the IP blocks from targeted websites is IP rotation. You should enable it for your cloud-based scraper as well. If you use some tool installed, you still need a special IP rotation service. It helps to send requests through different IP addresses it solves the majority of issues and allows to scrape websites without getting blocked. However, there are online resources that may use more advanced bot detection mechanisms and blacklists. Then the usage of residential or mobile proxies is advisable. It will make your requests look like numerous ‘real’ users access the site from varied locations. The chances to get blocked then are minimal, since a user often has one IP address. Having a million IP addresses you can surf the site like a million ordinary users and not arouse any suspicion. So you can scrape successfully for a longer time.

Tips For Web Data Extraction with IP Rotation without Getting Blocked or Blacklisted

Do not rotate IP Address after you’ve logged in or started to work in Sessions

If you have logged into a site, it recognizes and knows you through the session cookies it sets. When the same session cookies come from different IPs, you get blocked. Similarly, can web scraping be detected if you send back that session cookie to a site? The resource knows already that the session is using a particular IP and a User-Agent. Rotating these 2 fields will bring more harm than good.

Avoid the Usage of Proxy IP addresses in a sequence

In case requests come from IPs that are continuous or lie within the same range, even the most primitive anti-scraping plugin can detect you are a bot and block content scraping.

Automate free proxies

Free proxies don’t live long, some expire even before a scraping session is completed. To prevent it from disrupting, create some code to automatically select and refresh the list of proxies list with working IP addresses. This will save you much time and help avoid frustration.

Work with Elite Proxies whenever it’s possible

There are three major types of proxies available: transparent proxies, anonymous and elite. A transparent proxy is a server in between your computer and the World Wide Web. It redirects your requests as well as responses but does not modify them. With it, it’s simple to detect you are using a proxy. An anonymous proxy conceals your real IP address but submits the IP address of the proxy or leaves it blank. It helps to keep your privacy on the internet but still allows to see you are using a proxy server. If the developers really want to restrict access and stop scraping the website, they will set up to detect and block anonymous proxy. An elite proxy is ideal to pass any restrictions since it makes you seem like a regular internet user who is not using a proxy at all. Thus Elite Proxies are the best option.

Get Premium Proxies for scraping at a large scale

With large-scale data projects, it’s reasonable to get premium proxies, even if you have to pay for them. Some providers can even rotate the IPs for you.

Conclusion on How to Get around an IP Block Most Effectively

Knowing some basics, you can cope with simple scraping projects without being detected. However, with serious projects and large-scale tasks, you will not like web scraping blocked in the process, so the best solution is to outsource such tasks to professionals, like DataOx. With 6+ years of experience in web data scraping, we know the best IP rotation services to use, strategies to apply, and measure to take to prevent website scraper from being blocked. Schedule a free consultation with a DataOx expert and discuss the details.
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