The IGS maintains a number of FTP sites where the IGS products and related information can be accessed by users.
The principal FTP sites include:
- Central Bureau, Jet Propulsion Laboratory, USA IGS CB
- CDDIS Global Data Center, Godard Space Flight Center, USA CDDIS
- SOPAC Global Data Center, Scripps Institute of Oceanography, USA SOPAC
- IGN Global Data Center, Institut Geographique National, France IGN
- KASI Global Data Center, Korean Astronomy and Space Center, South Korea KASI
- Wuhan University, WHU