This document discusses the IT infrastructure of the National Database and Registration Authority (NADRA) of Pakistan. It outlines the key components of NADRA's national information infrastructure including its country-wide data communication network, networking capabilities, interfacing of databases and facilities for information sharing. It describes NADRA's hardware, including computers, cameras, scanners, switches and printers. It also discusses the software used, including operating systems, applications for citizen registration, database management and online verification. It provides an overview of NADRA's network architecture with connections between various registration centers and data centers. It also summarizes the main databases used for citizen registration and customer relationship management. The document highlights security measures used including firewalls, antiv