These entries are queried from radb.net using whois, you can try my project getting these.
:AS268259 route6: 2804:4e68::/32 descr: Angola Cables proxy-registered route object for customer AS268259 origin: AS268259 remarks: *********************************************** remarks: This object is for *AS268259* customer routes remarks: which is being exported from this source AS. remarks: remarks: This route object was create because no existing remarks: route object with the same sources was found, and remarks: since some Angola Cables peers filter based on remarks: these objects these routes may be rejected if remarks: this object is not created. remarks: remarks: Please contact peering [at] angolacables.co.ao if you remarks: have any questions regarding this object. remarks: *********************************************** mnt-by: MAINT-AS37468 changed: humberto.galiza [at] angolacables.co.ao 20181105 #13:06:04Z source: RADB last-modified: 2023-11-13T15:55:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source