Seismology is based on collection and analysis of seismic data. Therefore, the role of seismological networks in advancing human knowledge of the seismic characteristics of different regions of Earth is of great importance. Given the country’s need for more comprehensive earthquake information for advanced and accurate seismic studies, the establishment of a broadband seismological network has been a focus since the inception of the International Institute of Earthquake Engineering and Seismology (IIEES). In 1997, the first broadband seismological stations in the country were established in Ashtian, Naein, Hashtgerd, and Zahedan. The seismic data recorded at the stations of this network were transmitted to the network center located in the main building of the Institute in Tehran via a satellite communication system. By the end of the first phase of network development in 2025, the total number of active stations in the network center reached 35, continuously recording the seismic activities of the Iranian plateau. This network, using advanced broadband seismological instruments and satellite communication capabilities, enables precise determination of the location and magnitude of earthquakes in a short time after their occurrence. Currently, in order to increase the accuracy of advanced seismic studies and develop rapid earthquake analysis systems (such as damage estimation and early warning systems) that play a crucial role in earthquake prevention and crisis management, the second phase of network development is underway. A broadband seismological network was designed and established to identify the main seismic regions and earthquake mechanisms in the country to achieve the following objectives:
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