In Pakistan, one cannot emphasize enough on the role that a Subscriber Identity Module Info system plays. This system is a foundational element to mobile communication setups across Pakistan. Furthermore, the tie-in to the CNIC, which stands for Computerized National Identity Card is highly important.

Known widely as SIM Information Service, this facility is designed to track any Pakistani Subscriber Identity Module card legally. Mostly, it is exploited in security departments and telecom companies for various purposes.

National Identification Number, on the other hand, plays a key role in this service. Every Pakistani citizen must have a CNIC, which is the unique identifier. Through this number, they can locate the information of their corresponding SIM cards and the calls made from it.

Under the SIM Info System, the Pakistani government can trace any info system SIM card used within its territory. Through linking the SIM to the owner's CNIC. Subsequently, it aids in fighting against illegal activities, and it also enhances security and prevents misuse of the SIM cards.

Every mobile operator in Pakistan is mandated to maintain a service that links their subscribers' SIM cards to their CNICs. This is done by the mobile operators in collaboration with the government of Pakistan.

Moreover, the SIM Information service enables users to check their registered SIMs without any hassle. Through this system, anyone can quickly get their SIM data without having to visit any telecom office.

Basically, SIM Info System and CNIC linkage in Pakistan is a crucial step towards ensuring better security and improved management of telecommunication networks. This service is not only beneficial for the government but as well provides an additional layer of protection to anyone using a SIM card in the country.

In conclusion, the SIM Information System plays an indispensable role in tracing SIM card use and managing security in Pakistan. Linked with CNIC, it maximizes the effectiveness of security efforts by making easier the process of locating any SIM card's owner. It is indeed a strong tool in Pakistan's telecommunication scene.