Active phone number scanning, monitoring and sniffing
What is active phone number?
Active phone numbers mean: frequent use, frequent phone calls, long called time, lots of SMS.
Such phone number users may be businesses, companies, advertisements, public service numbers, etc., and may also be personal users, frequent use of telephone communications trigger records. Active phone numbers may last for days or longer.
How to scan, monitor or sniff active phone numbers?
The simple principle of phone call is: Caller – base station – base station controller – base station – receiver. The base station controller system is complex, and one of the most important parts is the communication tower. Communication tower is responsible for the transmission of telephone communication, it has a wide range of distribution, every city will have its existence. The active phone numbers are very well collected around the communication tower.
How to record active phone numbers saved to the database?
Because most communication towers are located in remote rural areas, mountainous areas and mountaintops, and the number of them is huge, the collection and recording work is heavy. So we need to find a geographic location center, as much as possible to cover every city in the country. According to the NGS(the U.S. National Geodetic Survey) survey and careful measurements, the geographic center of the contiguous United States is located in Kansas, Lebanon. Kansas State is located in the heart of the United States, the geographic center is located in 39.50N, 98.35W, northwest Kansas, 4.2km northwest of Lebanon center, about 19km from the southern border of Nebraska State. Here is the geographic center of the U.S. The communications tower built here can cover the largest area throughout the United States.
Today active phone numbers: