In this lab you will decode actual 5G identifiers from sample NAS messages. Given a hex-encoded SUCI, you will extract the SUPI format, home network ID, routing indicator, protection scheme, and concealed MSIN. You will also decode a 5G-GUTI into its GUAMI components and a TAI into PLMN ID + TAC. This exercise builds the skills needed for real-world 5G troubleshooting and protocol analysis.