System Group's official web site
- All things about the SystemGroup company
- http://www.systemgroup.net/en/pages/style.asp?p=1

Network Startup Resource Center: Iran
- Information and articles on the state of existing networks and contact information.
- http://www.nsrc.org/db/lookup/ISO=IR

Iran's Telecom and Internet Sector
- Comprehensive survey by the Open Research Network.
- http://www.science-arts.org/internet/

IranNet
- NIC for .ir and Iran's representative to the Trans-European Research and Educational Networking Association.
- http://www.nic.ir/

Everything for the people of Tehran
- Provides many interesting services for those who live in Tehran. The first electronic coupon provider in Iran.
- http://www.tehranvista.com

DP Iran
- Personal computer, networking and server supplier.
- http://www.dpi.net.ir/

ISP Computers
- Provider of routers, switches, access servers, interface modules, servers, workstations. Service available for Tehran and other cities in Iran.
- http://www.ispcomputers.com