These entries are queried from radb.net using whois, you can try my project getting these.
:AS22415 route: 24.205.199.0/24 descr: proxy entry for charter customer Avant Wireless origin: AS22415 mnt-by: MAINT-CHTR-WD changed: andy.monaco [at] chartercom.com 20110520 #18:16:37Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: valid route: 24.205.199.0/24 descr: Avant Wirless assignment from Charter origin: AS22415 mnt-by: MAINT-AS22415 changed: robert [at] avantwireless.com 20220227 source: ALTDB rpki-ov-state: valid route: 192.153.5.0/24 descr: Avant Wireless successor to Miscellaneous Computing Company origin: AS22415 mnt-by: MAINT-AS22415 changed: robert [at] avantwireless.com 20220227 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source