These entries are queried from radb.net using whois, you can try my project getting these.
:AS196741 route: 91.247.221.0/24 origin: AS196741 descr: This is a proxy route object for an Equinix Connect Customer, DataArt remarks: LOA is on a file. notify: smc_amer [at] equinix.com mnt-by: MAINT-AS14609 changed: eescobar [at] equinix.com 20221026 #15:00:35Z source: RADB last-modified: 2023-11-13T16:12:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.247.221.0/24 descr: DataArt_Technologies UK Ltd origin: AS196741 mnt-by: DATAART-MNT created: 2012-09-10T14:42:44Z last-modified: 2022-07-11T06:17:25Z 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