These entries are queried from radb.net using whois, you can try my project getting these.
:AS11893 route: 198.180.49.0/24 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.33.245.0/24 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.79.201.0/24 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.91.156.0/24 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.130.216.0/24 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.83.224.0/22 descr: SVCOLO Customer origin: AS11893 mnt-by: MAINT-AS8121 changed: noc [at] layer42.net 20120418 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source