These entries are queried from radb.net using whois, you can try my project getting these.
:AS201996 route: 87.246.40.0/24 origin: AS201996 mnt-by: SCLIR-MNT mnt-by: SKYF-MNT mnt-by: bg-inter-carrier-1-mnt mnt-by: lir-bg-skyfiber-1-MNT created: 2022-12-22T13:30:42Z last-modified: 2022-12-22T13:30:42Z 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 route: 87.246.41.0/24 origin: AS201996 mnt-by: SCLIR-MNT mnt-by: SKYF-MNT mnt-by: bg-inter-carrier-1-mnt mnt-by: lir-bg-skyfiber-1-MNT created: 2022-12-21T12:28:08Z last-modified: 2022-12-21T12:28:08Z 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 route: 87.246.42.0/24 origin: AS201996 mnt-by: SCLIR-MNT mnt-by: SKYF-MNT mnt-by: bg-inter-carrier-1-mnt mnt-by: lir-bg-skyfiber-1-MNT created: 2022-12-21T12:28:25Z last-modified: 2022-12-21T12:28:25Z 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 route: 87.246.43.0/24 origin: AS201996 mnt-by: SCLIR-MNT mnt-by: SKYF-MNT mnt-by: bg-inter-carrier-1-mnt mnt-by: lir-bg-skyfiber-1-MNT created: 2022-12-21T12:28:39Z last-modified: 2022-12-21T12:28:39Z 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 route: 212.5.60.0/24 origin: AS201996 mnt-by: SCLIR-MNT mnt-by: SKYF-MNT mnt-by: bg-inter-carrier-1-mnt mnt-by: lir-bg-skyfiber-1-MNT created: 2022-12-21T12:41:15Z last-modified: 2022-12-21T12:41:15Z 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