Dear colleagues, The RIPE NCC procedural document, "Due Diligence for the Quality of the RIPE NCC Registration Data", has been updated. The document, ripe-657, is available at: https://www.ripe.net/publications/docs/due-diligence The RIPE NCC has a mandate from the RIPE community to keep an up-to-date and correct Internet number resource registry. In order to comply with this mandate, the RIPE NCC performs due diligence on organisations the RIPE NCC registers Internet number resource for. The due diligence document outlines the minimum information and documentation the RIPE NCC requires to make sure that the registration data is valid and up-to-date. The document contains a new section relating to sanctions and areas under dispute that was added following a review of our procedures. The document was reviewed and approved by the RIPE NCC Executive Board at its recent meeting in Amsterdam. Regards, Axel Pawlik Managing Director RIPE NCC