IANA
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... extracted from IETF Documents, except for material that is being
placed under IANA maintenance, the following abbreviated notice
shall be included in the body of the material that will be
extracted in lieu of the notices otherwise required by Section 5:
...
... MIB or PIB module is the initial version of a module that
is to be maintained by the IANA, the following abbreviated notice
shall be included:
...