Confixes are affixation phenomena that may affect the class of a word (derivation) or may not change it (inflectional). This study aims to examine the use of confixes (per-/-an and peN-/-an) found in the novel “Laskar Pelangi” by Andrea Hirata. The research employs a corpus linguistic approach through the application of KORTARA (Korpus Nusantara) provided by Universitas Negeri Padang. The application can identify the words based on affixation. The data were collected and then analysed using digital computational linguistic analysis. The findings indicated that the use of per-/-an and peN-/-an in Indonesian functions creates new lexemes as they produce new meanings. Additionally, the study revealed that the addition of per-/-an and peN-/-an confixes changes the verb class of words into a noun class with the meaning of action-process nouns and action nouns. The confixes (per-/-an and peN-/-an) may affect the class of words.