29 CFR §102.127

1. (a)The term person outside this Agency, to whom the prohibitions apply includes any individual outside this Agency, partnership, corporation, association, or other entity, or an agent thereof, and the General Counsel or the General Counsel's representative when prosecuting an unfair labor practice proceeding before the Board pursuant to Section 10(b) of the Act.
2. (b)The term ex parte communication means an oral or written communication not on the public record with respect to which reasonable prior notice to all parties is not given, subject however, to the provisions of §§ 102.129 and 102.130.