These entries are queried from radb.net using whois, you can try my project getting these.
:AS15313 route: 63.210.205.0/24 descr: LEVEL3-Packeteer-63-210-205-0 origin: AS15313 mnt-by: PACKETEER-MNT changed: rguillen [at] packeteer.com 20000510 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.124.144.0/20 descr: PMTL-1BLK origin: AS15313 mnt-by: MAINT-AS15313 changed: johnh [at] pemtelco.com 20100819 #15:10:50Z source: RADB last-modified: 2023-11-13T15:41:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.124.156.0/24 origin: AS15313 descr: AS15313 proxy-registered route by Planters remarks: Proxy-registered route object remarks: for Planters customer. mnt-by: MAINT-AS26744 changed: craig.whetstone [at] planters.net 20200623 #00:19:51Z source: RADB last-modified: 2023-11-13T16:01:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.124.157.0/24 origin: AS15313 descr: AS15313 proxy-registered route by Planters remarks: Proxy-registered route object remarks: for Planters customer. mnt-by: MAINT-AS26744 changed: craig.whetstone [at] planters.net 20200623 #00:17:21Z source: RADB last-modified: 2023-11-13T16:01:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.124.159.0/24 origin: AS15313 descr: AS15313 proxy-registered route by Planters remarks: Proxy-registered route object remarks: for Planters customer. mnt-by: MAINT-AS26744 changed: craig.whetstone [at] planters.net 20200623 #00:19:05Z source: RADB last-modified: 2023-11-13T16:01:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 150.252.192.0/21 origin: AS15313 descr: AS15313 proxy-registered route by Planters remarks: Proxy-registered route object remarks: for Planters customer. mnt-by: MAINT-AS26744 changed: craig.whetstone [at] planters.net 20230606 source: RADB last-modified: 2023-11-13T16:17:27Z rpki-ov-state: valid route: 207.78.98.0/24 descr: UUNET-Packeteer-207-78-98-0 origin: AS15313 mnt-by: PACKETEER-MNT changed: rguillen [at] packeteer.com 20000510 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.238.114.0/24 descr: UUNET-Packeteer-208-238-114-0 origin: AS15313 mnt-by: PACKETEER-MNT changed: rguillen [at] packeteer.com 20000510 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source