The OnGo SHNI and OnGo Managed Identifier whitepaper has been approved for release. This whitepaper explains how identifiers work in 3GPP networks (LTE and 5G NR), the CBRS Shared Home Network Identifier (SHNI), and the need for managing identifiers when using the CBRS SHNI. It includes details on how to obtain managed identifiers from the OnGo Alliance and how to use them. In addition, we provide pointers on obtaining IMSI Block Numbers from the US IMSI Administrator (ATIS).