1. The "170" prefix is allocated for virtual network operators (VNOs), which allows these companies to utilize the network resources of fixed telecom operators to provide services based on their own business needs.2. Virtual operators with the appropriate licenses can offer communication services carrying their brand identity through the "170" prefix, including SMS, voice calls, and data traffic, thus providing consumers with more diverse choices.3. When providing services, mobile virtual network operators display their unique corporate branding on the user's device, enabling consumers to identify the brand behind the service.4. Virtual operators are authorized to issue nationwide SIM cards and have the right to independently set the prices for related communication services.5. In addition to these services, virtual operators can also develop and operate their own service platforms, offering value-added services such as voice messaging and SMS services.6. By examining the first four digits of the "170" number, one can infer the partnering telecom operator. For instance, the "1700" range is typically associated with Telecom, "1709" with Unicom, and "1705" with Mobile.