These entries are queried from radb.net using whois, you can try my project getting these.
:AS8871 route: 83.136.64.0/21 descr: UK [Europe] and US Internet Provider mnt-routes: AMITO-MNT descr: Please address abuse complaints to abuse [at] intrascape.com descr: Where they will be dealt with in line with our AUP. descr: Abuse complaints to any other address will be ignored. descr: Intrascape Network origin: AS8871 mnt-by: UK-INTRASCAPE mnt-by: mnt-uk-intrascape1-1 created: 2005-11-14T20:23:05Z last-modified: 2020-12-29T23:06:55Z 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 route: 212.59.64.0/19 descr: Proxy-registered route object origin: AS8871 remarks: auto-generated route object remarks: this next line gives the robot something to recognize remarks: L'enfer, c'est les autres remarks: remarks: This route object is for a Level 3 customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: since some Level 3 peers filter based on these objects remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact dl-routing [at] lumen.com if you have any remarks: questions regarding this object. mnt-by: LEVEL3-MNT changed: roy [at] Level3.net 20070216 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source