Type name: application Subtype name: alto-cdni+json Required parameters: N/A Optional parameters: N/A Encoding considerations: Encoding considerations are identical to those specified for the "application/json" media type. See [RFC8259]. Security considerations: Security considerations related to the generation and consumption of ALTO Protocol messages are discussed in Section 15 of [RFC7285]. Interoperability considerations: N/A Published specification: Section 3 of RFC 9241 Applications that use this media type: ALTO servers and ALTO clients [RFC7285] either stand alone or are embedded within other applications that provide CDNI interfaces for uCDNs or dCDNs. Fragment identifier considerations: N/A Additional information: Magic number(s): N/A File extension(s): N/A Macintosh file type code(s): N/A Person & email address to contact for further information: See Authors' Addresses section of RFC 9241. Intended usage: COMMON Restrictions on usage: N/A Author: See Authors' Addresses section of RFC 9241. Change controller: Internet Engineering Task Force (iesg&ietf.org).