These entries are queried from radb.net using whois, you can try my project getting these.
:AS52505 route: 152.231.16.0/20 origin: AS52505 descr: This route object is for IFX Networks customer route which is being exported under this origin AS 52505 mnt-by: MAINT-AS18747 changed: noc [at] ifxcorp.com 20200921 #22:04:21Z source: RADB last-modified: 2023-11-13T16:18:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 152.231.16.0/21 descr: LACNIC generated route for CBRNET origin: AS52505 remarks: LACNIC generated route for CBRNET remarks: maxLength 24 mnt-by: MNT-AR-CBRN-LACNIC changed: -net.com 20240305 source: LACNIC remarks: *************************************************** remarks: This object may have been modified remarks: For more information, please query whois.lacnic.net remarks: *************************************************** last-modified: 2024-03-05T22:15:05Z rpki-ov-state: valid route6: 2803:ee80::/32 descr: LACNIC generated route6 for CBRNET origin: AS52505 remarks: LACNIC generated route6 for CBRNET remarks: maxLength 64 mnt-by: MNT-AR-CBRN-LACNIC changed: -net.com 20240305 source: LACNIC remarks: *************************************************** remarks: This object may have been modified remarks: For more information, please query whois.lacnic.net remarks: *************************************************** last-modified: 2024-03-05T22:15:06Z rpki-ov-state: valid