NbtAddress nbtAddress = new NbtAddress(mockName, testAddressInt, false, NbtAddress.H_NODE);
        assertEquals("MYSERVER", nbtAddress.firstCalledName());
    }

    @Test
    void testFirstCalledName_IpAddress() {
        // Test firstCalledName with an IP address string
        mockName = new Name(mockConfig, "192.168.1.100", 0x20, null);