The Russian World Data Center for Solar-Terrestrial Physics and the World Data Center for Solid Earth Physics have been collecting, analyzing, archiving, and disseminating data and information on a wide range of geophysical disciplines since the International Geophysical Year 1957-1958. The centers provide free and convenient access for users to their large and permanently increasing volumes of data. Russian WDCs participate in scientific national and international programs and projects, such as InterMAGNET, InterMARGINS, and the International Polar Year. Since 2008 there has been an association of five Russian WDCs and one Ukrainian WDC in a regional segment of the World Data Centers.