Cirrus Core Networks, operating in the United States (North America & Caribbean), is identified by the Mobile Country Code (MCC) 312 and Mobile Network Code (MNC) 800. While details on Cirrus Core Networks can be scarce, the presence of a dedicated MCC/MNC pairing signifies a registered mobile network operator within the country. Understanding the role of MCC and MNC codes is crucial for identifying network operators for mobile devices and ensuring proper connectivity, especially when roaming or configuring devices to connect to specific networks. The FCC regulates mobile networks in the United States and dictates how providers must be setup and operate and this also ensures how MCC and MNC numbers and distributed. Cirrus Core Networks stands alongside major players like Verizon, AT&T, and T-Mobile in the competitive US mobile market. Unlike these larger national carriers, Cirrus Core Networks may specialize in specific services or target a niche market segment. It is important to note that network details and service offerings can evolve rapidly, and for specific information regarding Cirrus Core Networks' coverage area, technology (e.g., 4G LTE, 5G), or subscription plans, it is recommended to consult official resources or industry databases that track mobile network operators and their services within the United States.