47 C.F.R. § 2.926
(c) A grantee code may consist of Arabic numerals, capital letters, or other characters. The format for this code will be specified by the Commission's Office of Engineering and Technology. A prospective grantee or its authorized representative may receive a grantee code electronically via the Internet at http://www.fcc.gov/eas. The code may be obtained at any time prior to submittal of the application for equipment authorization. However, the fee required by § 1.1103 of this chapter must be submitted and validated within 30 days of the issuance of the grantee code, or the code will be removed from the Commission's records and a new grantee code will have to be obtained.
(1) After assignment of a grantee code each grantee will continue to use the same grantee code for subsequent equipment authorization applications. In the event the grantee name is changed or ownership is transferred, the circumstances shall be reported to the Commission so that a new grantee code can be assigned, if appropriate. See § 2.929(c) and (d) for additional information.
In the event the grantee name is changed or ownership is transferred, the circumstances shall be reported to the Commission so that a new grantee code can be assigned, if appropriate. See §§ 2.934 and 2.935 for additional information.
(d) The equipment product code assigned by the grantee shall consist of a series of Arabic numerals, capital letters or a combination thereof, and may include the dash or hyphen (-). The total of Arabic numerals, capital letters and dashes or hyphens shall not exceed 14 and shall be one which has not been previously used in conjunction with:
[44 FR 17179, Mar. 21, 1979, as amended at 46 FR 21014, Apr. 8, 1981; 52 FR 21687, June 9, 1987; 54 FR 1698, Jan. 17, 1989; 62 FR 10471, Mar. 7, 1997; 69 FR 54033, Sept. 7, 2004; 77 FR 43536, July 25, 2012; 80 FR 33441, June 12, 2015; 82 FR 50826, Nov. 2, 2017]