These entries are queried from radb.net using whois, you can try my project getting these.
:AS20343 route: 137.159.0.0/16 descr: Pepperdine University origin: AS20343 mnt-by: MAINT-AS20343 changed: vannoy [at] pepvax.pepperdine.edu 20070812 #06:56:29(UTC) source: RADB last-modified: 2023-11-13T15:39:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.159.0.0/17 descr: Pepperdine University origin: AS20343 mnt-by: MAINT-AS20343 changed: vannoy [at] pepvax.pepperdine.edu 20070808 #00:25:00(UTC) source: RADB last-modified: 2023-11-13T15:39:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.159.128.0/18 descr: Pepperdine University origin: AS20343 mnt-by: MAINT-AS20343 changed: vannoy [at] pepvax.pepperdine.edu 20070808 #00:22:06(UTC) source: RADB last-modified: 2023-11-13T15:39:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.159.192.0/18 descr: Pepperdine University origin: AS20343 mnt-by: MAINT-AS20343 changed: vannoy [at] pepvax.pepperdine.edu 20070808 #00:19:16(UTC) source: RADB last-modified: 2023-11-13T15:39:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source