| Provider Name | Provider Code | URI |
|---|---|---|
| Internet Standard -- IETF Request for Comments | rfc |
https://tools.ietf.org/rfc/rfc5013 |
| Bioregistry | bioregistry |
https://bioregistry.io/rfc:5013 |
| Name-to-Thing | n2t |
https://n2t.net/rfc:5013 |