These entries are queried from radb.net using whois, you can try my project getting these.
:AS19609 route: 66.151.246.0/23 descr: PNAP-DAL MATECH-DAL origin: AS19609 mnt-by: MAINT-AS1828 changed: pschissel [at] internap.com 20030909 source: RADB last-modified: 2023-11-13T16:13:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.15.176.0/22 descr: RR-RC-M&A Technology, Inc-Austin origin: AS19609 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: 208.70.184.0/22 descr: M&A Technology Inc 2045 Chenault Dr Carrollton TX 75006 US origin: AS19609 notify: noc [at] macomp.com mnt-by: MNT-MATECH-1 changed: noc [at] macomp.com 20061016 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.70.184.0/22 descr: RR-RC-M&A Technology, Inc-Austin origin: AS19609 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