These entries are queried from radb.net using whois, you can try my project getting these.
:AS397883 route: 23.144.48.0/24 origin: AS397883 descr: Route for downstream customer City of Hilliard mnt-by: MAINT-AS26554 changed: toc [at] ussignal.com 20200908 #20:02:09Z source: RADB last-modified: 2023-11-13T16:01:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 23.144.48.0/24 descr: City of Hilliard descr: 3800 Municipal Way descr: Hilliard, OH 43026 descr: US origin: AS397883 mnt-by: MNT-CH-1058 changed: mike [at] brescobroadband.com 20191018 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:801:9000::/44 descr: City of Hilliard descr: 3800 Municipal Way descr: Hilliard, OH 43026 descr: US origin: AS397883 mnt-by: MNT-CH-1058 changed: mike [at] brescobroadband.com 20191018 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:801:9000::/44 origin: AS397883 descr: Route for downstream customer City of Hilliard mnt-by: MAINT-AS26554 changed: toc [at] ussignal.com 20200908 #20:07:10Z source: RADB last-modified: 2023-11-13T16:01:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source