These entries are queried from radb.net using whois, you can try my project getting these.
:AS26557 route: 137.22.0.0/19 origin: AS26557 descr: Carleton College notify: farmer [at] umn.edu notify: cdlugosz [at] carleton.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210918 #06:42:23Z source: RADB last-modified: 2023-11-13T16:08:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.22.64.0/19 origin: AS26557 descr: Carleton College notify: farmer [at] umn.edu notify: cdlugosz [at] carleton.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210918 #06:46:50Z source: RADB last-modified: 2023-11-13T16:08:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.22.128.0/19 origin: AS26557 descr: Carleton College notify: farmer [at] umn.edu notify: cdlugosz [at] carleton.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20211029 #22:00:28Z source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.22.192.0/19 origin: AS26557 descr: Carleton College notify: farmer [at] umn.edu notify: cdlugosz [at] carleton.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20211029 #22:04:46Z source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source