These entries are queried from radb.net using whois, you can try my project getting these.
:AS202432 route: 91.108.42.0/24 descr: ITSPR subnet mnt-routes: MNT-UNICOMLAB origin: AS202432 mnt-by: MNT-GLOBAL-NET created: 2018-05-25T14:33:58Z last-modified: 2019-12-17T11:47:54Z 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