These entries are queried from radb.net using whois, you can try my project getting these.
:AS16905 route: 74.200.186.0/24 origin: AS16905 descr: LEARN Internet2 AS16905 mnt-by: MAINT-AS16905 changed: david.nichols [at] tx-learn.net 20201109 #22:25:18Z source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.200.187.0/24 origin: AS16905 descr: LEARN Research AS16905 mnt-by: MAINT-AS16905 changed: byron.hicks [at] tx-learn.net 20220407 #19:18:29Z source: RADB last-modified: 2023-11-13T16:10:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.223.141.0/24 descr: LEARN DFW origin: AS16905 notify: noc [at] northtexasgigapop.org mnt-by: MAINT-AS16905 changed: kevin2 [at] utdallas.edu 20101004 #15:11:14Z source: RADB last-modified: 2023-11-13T15:41:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.76.227.0/24 descr: LEARN-DFW AS16905 origin: AS16905 mnt-by: MAINT-AS16905 changed: byron.hicks [at] tx-learn.net 20110428 #14:04:53Z source: RADB last-modified: 2023-11-13T15:41:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2607:f928:2::/48 origin: AS16905 descr: LEARN AS16905 mnt-by: MAINT-AS16905 changed: david.nichols [at] tx-learn.net 20201109 #20:45:19Z source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2607:f928:12::/48 origin: AS16905 descr: LEARN AS16905 Glue Routes mnt-by: MAINT-AS16905 changed: david.nichols [at] tx-learn.net 20201109 #20:28:15Z source: RADB last-modified: 2023-11-13T16:02:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source