@Paucheildapp41 Normally you get this with the registration confirmation, but as the NSN is an internal number and is not normally required, it is not simply given out to private customers. As this is a customer help forum and we, as customers like you, do not have access to your data, you are welcome to call the hotline on 0800 800800. Explain to them what you need it for and they may give you this information.