| 01 | Proprietary | For example, a publisher’s own identifier. Note that <IDTypeName> is required with proprietary identifiers | 43 | |
| 03 | GTIN-13 | Formerly known as the EAN-13 (unhyphenated) | 43 | |
| 06 | DOI | Digital Object Identifier (variable length and character set, beginning ‘10.’ and without https://doi.org/ or the older http://dx.doi.org/) | 43 | |
| 12 | IMDB | Motion picture work identifier from the International Movie Database | 43 | |
| 18 | ISRC | International Standard Recording Code, 5 alphanumeric characters plus 7 digits | 43 | |
| 19 | ISAN | International Standard Audiovisual Number (17 or 26 characters – 16 or 24 hexadecimal digits, plus one or two alphanumeric check characters, and without spaces or hyphens) | 43 | 46 |
| 31 | EIDR DOI | Entertainment Identifier Registry DOI | 43 | |