These entries are queried from radb.net using whois, you can try my project getting these.
:AS53345 route: 8.19.112.0/24 descr: RR-RC-One Source Networks Inc-San Antonio origin: AS53345 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.19.112.0/24 descr: Once Source Route addition origin: AS53345 mnt-by: ONESOURCENET-MNT changed: jason.mallory [at] level3.com 20100218 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.31.122.0/24 descr: One Source Route Addition tech-c: OSR-LEVEL3 origin: AS53345 member-of: rs-53345-CUSTOMER 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: ONESOURCENET-MNT changed: daniel.davis [at] level3.com 20131220 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.38.24.0/24 descr: COLUMBUS NETWORKS TRANSIT CUSTOMERS origin: AS53345 notify: ipcolombia [at] columbus.co mnt-by: MAINT-AS23520 changed: wfajardo [at] columbus-networks.com 20140424 #21:28:33Z source: RADB last-modified: 2023-11-13T15:56:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 38.121.34.0/24 descr: cus route origin: AS53345 mnt-by: ONESOURCENET-MNT changed: oluseyi.adeniran [at] level3.com 20100322 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.217.123.0/24 descr: Proxy route object registered by AS38195 origin: AS53345 remarks: This route object was created by Superloop on behalf of a customer. notify: peering [at] superloop.com mnt-by: MAINT-AS38195 changed: peering [at] superloop.com 20190711 source: RADB last-modified: 2023-11-13T16:18:14Z rpki-ov-state: valid route: 205.252.236.0/24 descr: Proxy-registered route object origin: AS53345 remarks: This route object is for a PCCW Global 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 PCCW Global peers filter based on these objects remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact peering [at] pccwglobal.com if you have any remarks: questions regarding this object. mnt-by: MAINT-AS3491 changed: sajwani [at] pccwbtn.com 20090921 source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.46.91.0/24 descr: Once Source Route addition origin: AS53345 mnt-by: ONESOURCENET-MNT changed: jing.zhuo [at] level3.com 20140729 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.46.91.0/24 descr: RR-RC-One Source Networks Inc-San Antonio origin: AS53345 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.187.251.0/24 descr: Once Source Route from Level3 EU IP adress space origin: AS53345 mnt-by: ONESOURCENET-MNT changed: dl-euipsa [at] level3.com 20140314 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source