These entries are queried from radb.net using whois, you can try my project getting these.
:AS13352 route: 198.137.254.0/24 descr: Mark G. Thomas Consulting origin: AS13352 mnt-by: MAINT-AS8001 changed: tkaufman [at] corp.nac.net 20110628 #13:59:08Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.178.249.0/24 descr: Mark G. Thomas Consulting origin: AS13352 notify: Mark [at] Misty.com mnt-by: MAINT-AS8001 changed: tkaufman [at] corp.nac.net 20110628 #14:00:35Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.178.250.0/24 descr: Mark G. Thomas Consulting origin: AS13352 mnt-by: MAINT-AS8001 changed: tkaufman [at] nac.net 20081027 #19:04:25Z source: RADB last-modified: 2023-11-13T15:39:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.178.251.0/24 descr: Mark G. Thomas Consulting origin: AS13352 mnt-by: MAINT-AS8001 changed: tkaufman [at] nac.net 20081027 #19:04:25Z source: RADB last-modified: 2023-11-13T15:39:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.4.189.0/24 descr: Mark G. Thomas Consulting origin: AS13352 notify: Mark [at] Misty.com mnt-by: MAINT-AS8001 changed: tkaufman [at] corp.nac.net 20110628 #14:01:37Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.90.71.0/24 descr: Mark G. Thomas Consulting origin: AS13352 notify: Mark [at] Misty.com mnt-by: MAINT-AS8001 changed: tkaufman [at] corp.nac.net 20110628 #14:02:28Z source: RADB last-modified: 2023-11-13T15:41:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source