What do ZZNC and ZZGA refer to?

The correct answer highlights that ZZNC and ZZGA refer to specific telecommunications areas that exist in South Carolina, specifically at the borders with North Carolina (NC) and Georgia (GA). These designations are important for managing communication services and ensuring that regulations and service provisions are in place for regions that may be affected by cross-border interactions. They help define the jurisdictional boundaries for telecommunications providers and can impact how services are delivered in these bordering regions, ensuring compliance with both state and federal regulations as well as managing communication systems effectively across state lines.