These entries are queried from radb.net using whois, you can try my project getting these.
:AS44462 route: 81.21.112.0/20 descr: Stadtwerke Muerzzuschlag GmbH origin: AS44462 mnt-by: MUERZNET-MNT created: 2008-02-26T13:41:34Z last-modified: 2008-02-26T13:41:34Z 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: 185.178.0.0/22 descr: Stadtwerke Muerzzuschlag GmbH origin: AS44462 mnt-by: MUERZNET-MNT created: 2023-01-25T05:24:31Z last-modified: 2023-01-25T05:24:31Z 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 route6: 2a0a:4d80::/29 descr: Stadtwerke Muerzzuschlag GmbH origin: AS44462 mnt-by: MUERZNET-MNT mnt-by: mnt-muerznet created: 2021-04-29T09:20:31Z last-modified: 2021-04-29T09:20:31Z 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