10. Administratively Scoped Block (239/8)

Addresses in the Administratively Scoped Block are for local use within a domain and are described in [RFC2365].

10.1. Assignment Guidelines

Since addresses in this block are local to a domain, no IANA assignment policy is required.

10.1.1. Relative Offsets

The relative offsets [RFC2365] are used to ensure that a service can be located independent of the extent of the enclosing scope (see [RFC3180] for details). Since there are only 256 such offsets, the IANA should only assign a relative offset to a protocol that provides an infrastructure supporting service. Examples of such services include the Session Announcement Protocol [RFC2974]. Pursuant to section 4.4.2 of [RFC2780], assignments of relative offsets follow an Expert Review, IESG Approval, or Standards Action process. See [IANA] for the current set of assignments.