Overview of ARK organizations
Every ARK organization has a Name Assigning Authority Number (NAAN) listed in the public NAAN registry. Usually the NAAN representing a Name Assigning Authority (NAA) is a 5-digit number, but sometimes it is a shoulder, which is a few characters longer (e.g., “12345/x5”). Current registry data has not been loaded. Use the public NAAN registry link above for current records.
Each NAAN record includes the local organizational resolver to which the global Name-to-Thing (N2T.net) resolver will redirect ARKs that come in with that NAAN. Most ARKs, however, are published as URLs based at the local resolver (server) domain name, bypassing the global resolver.
Distribution of top-level domains (TLDs)
The range of top-level domains (TLDs), the final part of the domain name, across all local ARK resolvers is shown below. The table gives the count and percentage for every TLD in the current data. There is also a simple NAAN registry search interface.
All resolver TLDs
Registry data has not been loaded. Current records are available in the public NAAN registry.
| TLD | Registrations | Percentage |
|---|
Organizations registered per year
The next chart and table show the number of newly registered NAANs per year. Choose a TLD to update both views. The table includes the count and percentage for every year in the selected data.
Annual registration data has not been loaded. Current records are available in the public NAAN registry linked above.
| Year | Registrations | Percentage |
|---|
Latest ARK organizations registered
Any memory organization can start creating ARKs once it obtains a NAAN, which may be requested at no cost by filling out the NAAN request form. Recent organization data has not been loaded. Use the public NAAN registry link above for current records.
Page concept and JavaScript credit: Bob Coret, National Library of the Netherlands