Ranges are not expanded into separate records and therefore the MNCs cannot be found. For example, a filter of { mcc: 313, mnc: 111 } will not return the following record:
{
"type": "National",
"countryName": "United States of America",
"countryCode": "US",
"mcc": "313",
"mnc": "110 - 190",
"brand": "FirstNet",
"operator": "700 MHz Public Safety Broadband",
"status": "Unknown",
"bands": "LTE",
"notes": "D Block for future use"
},