These entries are queried from radb.net using whois, you can try my project getting these.
:AS37510 route: 41.77.232.0/21 descr: Proxy-registered route object origin: AS37510 remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact ipnetpeering [at] telkom.co.za if you have any remarks: questions regarding this object. mnt-by: MAINT-SAIX changed: pieter [at] saix.net 20130821 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.77.232.0/21 descr: Route Object origin: AS37510 mnt-by: POSIX-SZ-MNT changed: *** [at] posix.co.sz 20180905 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.77.232.0/21 descr: POSIX-Assginment origin: AS37510 mnt-by: posix created: 2014-09-08T14:40:47Z last-modified: 2018-09-04T17:59:17Z source: RIPE-NONAUTH 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