These entries are queried from radb.net using whois, you can try my project getting these.
:AS32324 route: 47.51.60.0/24 descr: proxy entry for City of Cerritos origin: AS32324 mnt-by: MAINT-CHTR-WD changed: nicholas.etnoyer [at] charter.com 20180827 #16:52:37Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: valid route: 65.113.225.0/24 descr: Hensel Phelps International Multihoming Block admin-c: MU1-LEVEL3 tech-c: MU1-LEVEL3 origin: AS32324 mnt-by: MASERGY-MNT changed: bwebb [at] masergy.com 20080728 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source