Hi friend.
2A indicates asterisk (*) in the ASCII code table, indicating that the number is hidden due to the security feature of the version.
In the signaling, ddb=04133035323731313032312A2A2A2A2A2A2A2A383614 is displayed as follows:
04: SDMF format;
13: followed by 19 digits;
3035323731313036:11:06 on May 27;
312A2A2A2A2A2A2A2A3836: number 1 * * * * * * * * * 86;
14: verification code.
Thanks.