These entries are queried from radb.net using whois, you can try my project getting these.
:AS18903 route: 12.152.18.0/23 descr: LendingTree, LLC origin: AS18903 mnt-by: MAINT-AS27506 changed: daniel.mccoon [at] crowncastle.com 20190807 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.152.18.0/24 descr: Proxy-registered route object origin: AS18903 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 20060811 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.152.19.0/24 descr: Proxy-registered route object origin: AS18903 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 20070714 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.80.132.0/23 origin: AS18903 descr: Proxy-registered route object for Lending Tree mnt-by: MAINT-AS2711 changed: kevin.houck [at] segra.com 20220601 #18:43:10Z source: RADB last-modified: 2023-11-13T16:11:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.80.132.0/24 origin: AS18903 descr: Proxy-registered route object for Lending Tree remarks: This route object is for a Spirit Telecom customer route which is being exported under this origin AS. mnt-by: MAINT-AS2711 changed: joe.elicson [at] segra.com 20201230 #15:25:07Z source: RADB last-modified: 2023-11-13T16:03:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source