These entries are queried from radb.net using whois, you can try my project getting these.
:AS37594 route: 102.64.72.0/22 descr: MTN South Sudan origin: AS37594 mnt-by: MTNSS-mnt changed: *** [at] mtn.com 20190910 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.64.75.0/24 origin: AS37594 descr: MTN-South-Sudan mnt-by: MAINT-AS2905 changed: cnocisp.za [at] mtn.com 20200527 #05:22:09Z source: RADB last-modified: 2023-11-13T16:00:41Z rpki-ov-state: valid route: 197.231.236.0/22 descr: MTN South Sudan IPv4 origin: AS37594 mnt-by: MTNSS-mnt changed: *** [at] mtn.com 20190910 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source