These entries are queried from radb.net using whois, you can try my project getting these.
:AS328196 route: 102.210.76.0/22 descr: PowerNet Liberia origin: AS328196 mnt-by: POWERNET-LIBERIA-MNT mnt-lower: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20240213 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.8.0/22 descr: PowerNet Liberia origin: AS328196 mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20171102 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.8.0/24 origin: AS328196 descr: PowerNet Liberia mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20230623 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.9.0/24 origin: AS328196 descr: PowerNet Liberia mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20230623 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.10.0/23 origin: AS328196 descr: PowerNet Liberia mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20230623 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.10.0/24 origin: AS328196 descr: PowerNet Liberia mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20230623 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 164.160.11.0/24 origin: AS328196 descr: PowerNet Liberia mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20230623 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:f1d8::/32 descr: PowerNet Liberia origin: AS328196 mnt-by: POWERNET-LIBERIA-MNT changed: *** [at] pwrnetworks.com 20171103 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source