These entries are queried from radb.net using whois, you can try my project getting these.
:AS7753 route: 44.94.96.0/20 descr: ARDC SCC origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 162.247.136.0/21 descr: Arcustech, LLC origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.62.135.0/24 descr: Norstar origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.249.198.0/24 descr: Cook's Information Systems Services origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.153.244.0/22 descr: Geeks Networks origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.240.64.0/19 descr: ipHouse/Green Cloud Defense origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.243.128.0/18 descr: ipHouse/Green Cloud Defense origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.250.160.0/19 descr: ipHouse/Green Cloud Defense origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:4980::/32 descr: ipHouse/Green Cloud Defense origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:4980::/32 descr: IpHouse origin: AS7753 mnt-by: IPHOUSE-MNT changed: peggy.knapp [at] level3.com 20110921 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:f980::/32 descr: ArcusTech Net6 origin: AS7753 mnt-by: MAINT-AS7753 changed: merlyn [at] iphouse.net 20220107 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source