Libraries make use of Biblioteksentralen's centralized library catalog system, BIBBI. It contains 170,000 bibliographic records, with 11,000 records added each year. A simplified version of the MARC21/NORMARC format is used, called BSMARC.
Biblioteksentralen is cooperatively owned (the "AL" suffix to the name means "andelslag" or cooperatively held corporation) by 425 municipalities, 14 counties, the Norwegian Association of Local and Regional Authorities, and the Norwegian Library Association. It was established in this form in February 1952 after a government resolution in the previous year, but its predecessor Folkeboksamlingenes Ekspedisjon had been around since 1902. The corporation has 56 employees and a turnover of NOK 99 million (2006) with a profit from operations of 2 million.