These entries are queried from radb.net using whois, you can try my project getting these.
:AS328618 route: 102.223.208.0/22 descr: IP-WHOLE origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200414 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.208.0/23 descr: NK-NT-CT origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200224 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.208.0/24 descr: NK-POOL1 origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliverosft.net 20200415 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.209.0/24 descr: NK-POOL1 origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliverosft.net 20200415 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.210.0/24 descr: NK-NT-MG origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200224 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.210.251/32 descr: PUB-BRAS origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200412 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.211.0/24 descr: SK-NT-MG-CT origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200328 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.223.211.255/32 descr: PUB-BRAS origin: AS328618 mnt-by: EO1-MNT changed: *** [at] oliversoft.net 20200414 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source