<td>An Access Point Name (APN) is a gateway between a GSM, GPRS, 3G or 4G mobile network and another computer network. Depending on the contract, some operators may require you to use an APN just to complete the registration on a network. In other cases, APN is used to get special parameters from the operator (e.g., a [[Private_and_Public_IP_Addresses#Public_IP_address|public IP address]]) depending on the contract.<br>An APN Network Identifier cannot start with any of the following strings: | <td>An Access Point Name (APN) is a gateway between a GSM, GPRS, 3G or 4G mobile network and another computer network. Depending on the contract, some operators may require you to use an APN just to complete the registration on a network. In other cases, APN is used to get special parameters from the operator (e.g., a [[Private_and_Public_IP_Addresses#Public_IP_address|public IP address]]) depending on the contract.<br>An APN Network Identifier cannot start with any of the following strings: |