The university has nine regional centres, six sub-regional centres and 169 study centers in various states in India.
The NSS report calls the regional centres "gateways" and the sub-regional centres "hubs".
Adjacent to the urban area of Sutton-in-Ashfield, Mansfield is the only major sub-regional centre in Nottinghamshire covering an area of 78 square kilometres.
It has 21 schools and a network of 59 regional centres, 7 sub-regional centres, 2,600 study centres, and 52 overseas centres.
These are provided by production centres in Wales, Scotland and Northern Ireland and a further 14 regional and sub-regional centres in England.
Hertfordshire County Council designates Watford, along with Stevenage, to be its major sub-regional centre.
Hertfordshire County Council designates Watford and Stevenage to be its major sub-regional centres, heading its list of preferred sites for retail development.
A review of the Corridor Plan in 1987 found that the sub-regional centres had failed to adequately compete against the regional shopping centres in the middle-distance suburbs.
The Central Museum of AnSI is located at Kolkata, whereas Zonal Anthropological Museums at six regional and one sub-regional centres.
Livingston is the sub-regional centre serving West Lothian.