Whenever IP is added to the blacklist, BrightData reply with 401 error and message in the header of the response. The below show response when using the IP: 2.55.40.11
HTTP/1.1 401 Auth Failed ip_blacklisted: 2.55.40.11, check brightdata.com/faq#remove-blacklist_ips to resolve
In addition, the X-Luminati-Error header will show:
X-Luminati-Error: Auth Failed ip_blacklisted: 2.55.40.11, check brightdata.com/faq#remove-blacklist_ips to resolve