These entries are queried from radb.net using whois, you can try my project getting these.
:AS48371 route: 91.210.228.0/22 descr: WESTLAN-NET origin: AS48371 mnt-by: WESTLAN-MNT created: 2008-12-11T15:25:25Z last-modified: 2008-12-11T15:25:25Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.210.228.0/23 descr: Route for load balancing origin: AS48371 mnt-by: WESTLAN-MNT created: 2009-12-22T21:49:51Z last-modified: 2009-12-22T21:49:51Z 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: 91.210.228.0/24 origin: AS48371 mnt-by: WESTLAN-MNT created: 2017-11-21T11:16:58Z last-modified: 2017-11-21T11:16:58Z source: RIPE descr: Route for load balancing 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: 91.210.229.0/24 descr: Route for load balancing origin: AS48371 mnt-by: WESTLAN-MNT created: 2010-04-26T10:43:58Z last-modified: 2010-04-26T10:43:58Z 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: 91.210.230.0/23 descr: Route for load balancing origin: AS48371 mnt-by: WESTLAN-MNT created: 2013-09-12T13:41:16Z last-modified: 2013-09-12T13:41:16Z 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: 91.210.230.0/24 descr: Route for load balancing origin: AS48371 mnt-by: WESTLAN-MNT created: 2009-07-02T19:45:23Z last-modified: 2009-07-02T19:45:23Z 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: 91.210.231.0/24 descr: Route for load balancing origin: AS48371 mnt-by: WESTLAN-MNT created: 2009-07-02T19:43:40Z last-modified: 2009-07-02T19:43:40Z 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