Near Real Time Mirroring (NRTM) version 4

This document specifies a one-way synchronization protocol for Internet Routing Registry (IRR) records, called Near Real Time Mirroring version 4 (NRTMv4), in which files are distributed over HTTPS. The protocol allows instances of IRR database servers to mirror IRR records, specified in the Routing Policy Specification Language (RPSL), between each other.