These entries are queried from radb.net using whois, you can try my project getting these.
:AS3713 route: 199.223.16.0/20 descr: ICF International origin: AS3713 mnt-by: MAINT-AS5009 changed: ipadmin [at] eatel.net 20160321 #18:54:16Z source: RADB last-modified: 2023-11-13T15:48:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.223.16.0/21 origin: AS3713 descr: ICF via EATEL mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20190812 #13:15:28Z source: RADB last-modified: 2023-11-13T15:57:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.223.16.0/22 descr: ICF origin: AS3713 mnt-by: MAINT-AS19893 changed: bkindig [at] ragingwire.com 20170803 #16:23:01Z source: RADB last-modified: 2023-11-13T16:15:39Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.223.24.0/22 origin: AS3713 descr: ICF via EATEL mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20190812 #13:16:00Z source: RADB last-modified: 2023-11-13T15:57:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.223.28.0/22 descr: ICF origin: AS3713 mnt-by: MAINT-AS19893 changed: bkindig [at] ragingwire.com 20170828 #14:24:56Z source: RADB last-modified: 2023-11-13T16:15:39Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:7b:b000::/48 descr: ICF International IPv6 origin: AS3713 mnt-by: MAINT-AS5009 changed: ipadmin [at] eatel.net 20160729 #15:18:48Z source: RADB last-modified: 2023-11-13T15:49:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source