These entries are queried from radb.net using whois, you can try my project getting these.
:AS57619 route: 77.71.112.0/22 descr: Varna Data Center EOOD network mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT origin: AS57619 mnt-by: BGWAN-MNT created: 2021-01-25T17:35:22Z last-modified: 2021-01-25T17:35:22Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 77.71.112.0/23 descr: Varna Data Center EOOD network origin: AS57619 mnt-by: BGWAN-MNT mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT created: 2011-12-20T15:51:26Z last-modified: 2011-12-20T15:51:26Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 77.71.112.0/24 descr: Varna Data Center EOOD network mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT origin: AS57619 mnt-by: BGWAN-MNT created: 2021-01-25T17:31:48Z last-modified: 2021-01-25T17:31:48Z 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: 77.71.113.0/24 descr: Varna Data Center EOOD network mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT origin: AS57619 mnt-by: BGWAN-MNT created: 2021-01-25T17:32:39Z last-modified: 2021-01-25T17:32:39Z 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: 77.71.114.0/23 descr: Varna Data Center EOOD network mnt-routes: BGWAN-MNT mnt-lower: BGWAN-MNT origin: AS57619 mnt-by: BGWAN-MNT created: 2021-01-25T17:34:16Z last-modified: 2021-01-25T17:34:16Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 77.71.114.0/24 descr: Varna Data Center EOOD network origin: AS57619 mnt-by: BGWAN-MNT mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT created: 2012-05-22T12:58:38Z last-modified: 2012-05-22T12:58:38Z 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: 77.71.115.0/24 descr: Varna Data Center EOOD network origin: AS57619 mnt-by: BGWAN-MNT mnt-lower: BGWAN-MNT mnt-routes: BGWAN-MNT created: 2013-07-10T14:50:28Z last-modified: 2013-07-10T14:50:28Z 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