These entries are queried from radb.net using whois, you can try my project getting these.
:AS2300 route: 81.52.185.0/24 descr: CMI (Customer Route) origin: AS2300 mnt-by: MAINT-AS58453 changed: qas_support [at] cmi.chinamobile.com 20190730 source: RADB last-modified: 2023-11-13T15:56:47Z rpki-ov-state: valid route: 81.52.185.0/24 descr: Opentransit descr: France Telecom origin: AS2300 mnt-by: FT-BRX created: 2012-04-04T15:37:46Z last-modified: 2012-04-04T15:37:46Z 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