1. A system for determining whether domain names are confusingly similar, comprising: at least one processor; and at least one memory coupled to the at least one processor, the at least one memory bearing processor-executable instructions that, upon execution upon the at least one processor, cause the system at least to: receive a request to register or issue a certificate for a first domain name; render the first domain name as as a plurality of images, the first domain name being rendered with a different font in each image of the plurality of images; perform optical character recognition (OCR) on the plurality of images to extract text from each of the plurality of images, the extracted text corresponding to the first domain name, wherein the OCR is configured to resolve at least two different and visually similar characters to a same character; determine whether the extracted text from at least one of the plurality of images is found in a set of domain names for which confusingly similar domain names cannot be registered or issued the certificate; and raise an alert regarding registration or issuance of the certificate for the first domain name when the extracted text from at least one of the plurality of images is found in the set of domain names for which confusingly similar domain names cannot be registered or issued the certificate.