This week Facebook filed a lawsuit against Namecheap, one of internet’s largest domain name registrars. The social networking giant says that Namecheap has refused to cooperate in an investigation into a series of fraudulent domains registered through its service that impersonated the brand on Facebook. Christen Dubois, Facebook Director and Associate General Counsel, said today that Facebook engineers monitored 45 suspicious lookalike Facebook domains registered through Namecheap, which had information of the owners concealed through the company’s WhoisGuard side-service. Some of the sample domains have included instagrambusinesshelp.com, facebo0k-login.com and whatsappdownload. Site likes. Dubois said these lookalike domains — which exploit the Facebook brand — are widely used for phishing, fraud, and scam. According to ZDNet, namecheap respond to them saying that “We don’t want people to be deceived by these web addresses, so we’ve taken legal action,” the Facebook exec said.