These entries are queried from radb.net using whois, you can try my project getting these.
:AS23508 route: 199.1.16.0/24 descr: Proxy-registered route object origin: AS23508 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 20070223 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.1.16.0/24 origin: AS23508 descr: Proxy registered route object for Chesapeake Regional Healthcare - Sprint Owned. admin-c: Corey Fisher tech-c: Steven Brooks mnt-by: MAINT-AS7795 changed: brookss [at] lumosnet.com 20210603 #19:16:49Z source: RADB last-modified: 2023-11-13T16:05:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source