These entries are queried from radb.net using whois, you can try my project getting these.
:AS328913 route: 196.49.84.0/24 origin: AS328913 descr: DOUALA-IX mnt-by: SD2-MNT changed: *** [at] st.digital 20210824 changed: *** [at] st.digital 20211028 changed: *** [at] st.digital 20211030 source: AFRINIC org: ORG-SD2-AFRINIC notify: *** [at] douala-ix.net mnt-lower: DOUALA-IX-MNT rpki-ov-state: valid route6: 2001:43fe:c000::/48 origin: AS328913 descr: DoualaIX V6 mnt-by: SD2-MNT changed: *** [at] st.digital 20210816 changed: *** [at] st.digital 20211028 changed: *** [at] st.digital 20211030 source: AFRINIC notify: *** [at] douala-ix.net mnt-lower: DOUALA-IX-MNT rpki-ov-state: valid