Jensense published an interesting post about how to recognize a site that has been banned from using Adsense ads. This topic is particularly important if you plan to buy a site with the goal of putting Adsense ads and realize after buying it that this will not be possible.
On the one hand, you do not want to buy a site that is not possible to place ads and on the other hand, you do not want to pass the webmaster for the task of taking an Adsense account to verify if it is possible to do so, because the idea is to obtain the best price of the site.
So, these are some of the ways to ensure that a site has not been banned from Adsense:
Using the Ads Preview Tool
Visit some of the pages on the site and use the AdSense Ads Preview tool. If no ads appear on any of the pages or an error code of type “e: -2146697208” appears then the site was banned from using adsense ads.
Sometimes this error message is not enough. Even if it does not appear the site may be banned. Sometimes the following legend appears instead of the ads:This is not necessarily a bad sign, although some people think that it is really a sign that the site was banned. Check a second time later in case it is a topic in the preview tool or a topic related to robots.txt or indexing.
You are not authorized to view this page or “You are not authorized to view this page”
When a site was banned and Adsense code still remains, instead of PSA ads you will see an “Unauthorized access” error that corresponds to HTTP error code 403. When you see yourself in an iframe, you probably will not see the entire page, but this is a clear sign that the site has been taken out of the Adsense program.It is important to note that this error is seen in IE browsers and not in Firefox.if this is not work for you than try this free Adsense banned Status Checker free of cost.
Cache Google / Yahoo / MSN
If you run into someone who is trying to get the ads out quickly, check the cache in the search engines for iframes containing the error message “Unauthorized access” or “You are not authorized to view this page”. Check the cache dates to know how long the data is cached.
Internet Wayback Machine
The Wayback Machine Internet site is an interesting way to know if the site we are investigating had any inconvenience of any nature. Even if Adsense was active during the file capture period, the ads will look like “Unauthorized access” or “You are not authorized to view this page” so this is a good way to verify a site. Anyway, webmasters can prevent Internet Wayback Machine from archiving them using robots.txt.
These ways of checking if a site has been banned in the Google Adsense program are not perfect but they limit the possibilities of buying a site that is not able to have ads.
What happens if we buy a banned site? It is probably best to contact Adsense support directly for advice. In any case, very few people have been able to be accepted into the program again by a previously banned site, because it is very difficult to detect unscrupulous acts.