Geo-blocking refers to practices used for commercial reasons by online service providers that result in the denial of access to websites based in other Member States or, where the consumer is able to access the website, they are still not able to purchase products or services from it. Sometimes the consumer will be re-routed to a local website with different prices or a different product or service. In other such cases, where the sale is not denied, geo-localising practices – where differing pricing structures are automatically applied based on geographic location – are often used to apply differentiated prices to consumers. Geo-blocking is one of several tools used by companies to segment markets along national borders (territorial restrictions). By limiting consumer opportunities and choice, geo-blocking constitutes a significant cause of consumer frustration and of fragmentation of the Internal Market.