Internet Assigned Numbers Authority • Domains • Protocols • Numbers • About Drone Remote ID Protocol Created 2022-12-08 Last Updated 2026-06-22 Available Formats [IMG] XML [IMG] HTML [IMG] TXT Registries Included Below • Hierarchical HIT (HHIT) Prefixes • Hierarchical a HIT (HHIT) Suite IDs • DRIP SAM Types • DRIP Frame Types • DRIP RAA Allocations • HHIT Entity Types Hierarchical HIT (HHIT) Prefixes Registration Procedure(s) Expert Review Expert(s) Adam Wiethuechter, Mohamed Boucadair Reference [RFC 9374] Note Registration requests should be sent to the mailing list described in [RFC 9374]. If approved, designated experts should notify IANA within three weeks. For assistance, please contact iana@iana.org. Available Formats [IMG] CSV HHIT Use Bits Value Reference DET 28 2001:30::/28 [RFC 9374] Hierarchical a HIT (HHIT) Suite IDs Registration Procedure(s) IETF Review Reference [RFC 9374] Available Formats [IMG] CSV HHIT Suite Value Reference RESERVED 0 [RFC 9374] RSA,DSA/SHA-256 1 [RFC 7401] ECDSA/SHA-384 2 [RFC 7401] ECDSA_LOW/SHA-1 3 [RFC 7401] Unassigned 4 EdDSA/cSHAKE128 5 [RFC 9374] Unassigned 6-253 HDA Private Use 1 254 [RFC 9374] HDA Private Use 2 255 [RFC 9374] DRIP SAM Types Registration Procedure(s) Standards Action Reference [RFC 9575] Note This registry is a mirror for SAM Types containing the subset of allocations used by DRIP Authentication Messages. Future additions MUST be done through ASTM's designated registrar which at the time of publication of this RFC is [ICAO]. Additions for DRIP will be coordinated by IANA and the ASTM designated registrar before final publication as Standards Track RFCs. Available Formats [IMG] CSV SAM Type Name Description Reference 0x01 DRIP Link Format to hold Broadcast Endorsements [RFC 9575] 0x02 DRIP Wrapper Authenticate full ASTM Messages [RFC 9575] 0x03 DRIP Manifest Authenticate hashes of ASTM Messages [RFC 9575] 0x04 DRIP Frame Format for future DRIP authentication [RFC 9575] DRIP Frame Types Expert(s) Adam Wiethuechter, Mohamed Boucadair Reference [RFC 9575] Note Requests for registration in the Expert Review range should be sent to the mailing list described in [RFC 9575]. If approved, designated experts should notify IANA within three weeks. For assistance, please contact iana@iana.org. Available Formats [IMG] CSV Range Registration Procedures 0x01-0x9F Expert Review 0xA0-0xEF First Come First Served 0xF0-0xFF Experimental Use Frame Type Name Description Reference 0x00 Reserved Reserved [RFC 9575] 0x01-0xEF Unassigned 0xF0-0xFF Experimental Reserved for Experimental Use [RFC 9575] DRIP RAA Allocations Reference [RFC 9886] Available Formats [IMG] CSV Range Registration Procedures 0-3 Reserved 4-3999 IESG Approval 4000-8191 Reserved 8192-15359 First Come First Served 15360-16383 Private Use Value Name Reference Contact 0-3 Reserved [RFC 9886] 4-3999 Unassigned 4000-8191 Reserved [RFC 9886] 8192 Bear Metal OÜ [Lourens_Naudé] 8193-15359 Unassigned 15360-16383 Reserved for Private Use [RFC 9886] HHIT Entity Types Registration Procedure(s) First Come First Served Reference [RFC 9886] Available Formats [IMG] CSV Value HHIT Type Reference 0 Not Defined [RFC 9886] 1 DRIP Identity Management Entity (DIME) [RFC 9886] 2-4 Unassigned 5 Apex [RFC 9886] 6-8 Unassigned 9 Registered Assigning Authority (RAA) [RFC 9886] 10-12 Unassigned 13 HHIT Domain Authority (HDA) [RFC 9886] 14-15 Unassigned 16 Unmanned Aircraft (UA) [RFC 9886] 17 Ground Control Station (GCS) [RFC 9886] 18 Unmanned Aircraft System (UAS) [RFC 9886] 19 Remote Identification (RID) Module [RFC 9886] 20 Pilot [RFC 9886] 21 Operator [RFC 9886] 22 Discovery & Synchronization Service (DSS) [RFC 9886] 23 UAS Service Supplier (USS) [RFC 9886] 24 Network RID Service Provider (SP) [RFC 9886] 25 Network RID Display Provider (DP) [RFC 9886] 26 Supplemental Data Service Provider (SDSP) [RFC 9886] 27 Crowd Sourced RID Finder [RFC 9886] Contact Information ID Name Contact URI Last Updated [Lourens_Naudé] Lourens Naudé mailto:lourens&bearmetal.eu 2026-06-22 Licensing Terms