These entries are queried from radb.net using whois, you can try my project getting these.
:AS8672 route: 151.251.39.0/24 descr: A1 BG Net origin: AS8672 mnt-by: ORBITEL-NOC mnt-by: AS12716-MNT mnt-by: AS13124-MNT mnt-by: MNT-MEGALAN mnt-by: SPNET-MNT created: 2021-03-19T15:31:07Z last-modified: 2022-12-08T12:56:31Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid