These entries are queried from radb.net using whois, you can try my project getting these.
:AS40100 route: 208.68.156.0/22 descr: Charter Business Proxy Add for Alurium origin: AS40100 notify: dlnociptier3 [at] charter.com notify: dldntnbb [at] charter.com mnt-by: MAINT-CHTR-WD changed: rob.beauvais [at] charter.com 20150728 #21:51:19Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source