Hi @ali_mohamed and welcome in the community!
Currently our main way to identify NORAD objects happens through checking observations, from Network or from strf tools, against the published TLE by using the Doppler effect of the received signal.
You can check this process for DJIBUTI-1A and the other satellites on this launch in “SpaceX F9 Transporter-9 - Vandenberg - 2023-11-11 18:47 UTC”
Especially in this post, you will find the status report where includes DJIBUTI-1A identification and the evidence that shows why object 58266 is best fit for it.
Here are the tools that we usually use: