These entries are queried from radb.net using whois, you can try my project getting these.
:AS56869 route: 91.228.136.0/22 descr: MPC Net origin: AS56869 mnt-by: MNT-INSITE-SPZOO created: 2011-10-04T18:31:43Z last-modified: 2011-10-04T18:31:43Z 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: 91.228.136.0/24 descr: MPC Network origin: AS56869 mnt-by: MNT-INSITE-SPZOO created: 2011-10-04T19:27:41Z last-modified: 2011-10-04T19:27:41Z 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: 193.168.240.0/22 descr: MPCNET SP. Z O.O. origin: AS56869 mnt-by: mnt-pl-mpcnet-1 created: 2018-12-13T12:41:39Z last-modified: 2018-12-13T12:41:39Z 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: not_found # No ROAs found, or RPKI validation not enabled for source