For historical reasons, Norman Wikipedia can be found at nrm:
For historical reasons, Norman Wikipedia (including Guernésiais and Jèrriais dialects), was created with language code nrm, even though that is properly the language code for Narom (a Malayo-Polynesian language spoken by the Narom people in Sarawak, Malaysia). It is hoped that we will be able to move Norman Wikipedia to nrf.wikipedia.org in the near future; see phab:T25216.
If you wish to create Narom Wikipedia test: Unfortunately, because the Norman Wikipedia exists at this location, technical limitations in the MediaWiki software prevent the creation of a Narom Wikipedia here at its proper location. Any editor wishing to begin a Narom Wikipedia test should contact an administrator, and one of us will set up a special, temporary language code for you to use.