These entries are queried from radb.net using whois, you can try my project getting these.
:AS40553 route: 208.90.52.0/22 descr: RR-RC-Cuyohoga County Information Services-NEO origin: AS40553 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.90.54.0/23 origin: AS40553 descr: 208.90.54.0/23 member-of: AS40553:RS-ROUTES components: {208.90.54.0/23^+} admin-c: NOC2069-ARIN tech-c: NOC2069-ARIN tech-c: CUYAH-ARIN tech-c: EDENS3-ARIN tech-c: MIOJE1-ARIN tech-c: TPE18-ARIN remarks: Cuyahoga County IT OAR-CS0026573 mnt-by: MAINT-AS600 changed: tbonse [at] oar.net 20230630 #19:23:24Z source: RADB last-modified: 2023-11-13T16:17:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source