These entries are queried from radb.net using whois, you can try my project getting these.
:AS31774 route: 47.19.157.0/24 descr: WALL STREET NETWORK SOLUTIONS origin: AS31774 mnt-by: MAINT-AS27506 changed: celsasser [at] lightower.com 20150422 source: RADB last-modified: 2023-11-13T15:47:25Z rpki-ov-state: valid route: 74.217.233.0/24 descr: PNAP-NYM INAP-NYM-TACONIC-49538 origin: AS31774 mnt-by: MAINT-AS1828 changed: bnabors [at] internap.com 20111210 source: RADB last-modified: 2023-11-13T16:14:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.187.153.0/24 descr: Integra Telecom Route Object origin: AS31774 remarks: Integra Telecom Customer remarks: contacts per RFC2142: remarks: Abuse / UCE report abuse [at] integratelecom.com remarks: SWIP Issues ipadmin [at] integratelecom.com notify: bgp [at] integra.net mnt-by: MAINT-AS7385 changed: stafford.rau [at] integratelecom.com 20070511 source: RADB last-modified: 2023-11-13T16:11:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source