These entries are queried from radb.net using whois, you can try my project getting these.
:AS22155 route: 204.28.28.0/24 descr: Mine Safety Appliances origin: AS22155 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20160902 #18:57:08Z source: RADB last-modified: 2023-11-13T15:49:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.28.29.0/24 descr: Mine Safety Appliance origin: AS22155 mnt-by: MAINT-AS27506 changed: slefevre [at] lightower.com 20171013 source: RADB last-modified: 2023-11-13T15:51:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.28.30.0/23 descr: Mine Safety Appliances origin: AS22155 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20160902 #18:57:08Z source: RADB last-modified: 2023-11-13T15:49:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.28.31.0/24 descr: Mine Safety Appliances Company origin: AS22155 mnt-by: MAINT-CCI changed: tom.hahn [at] consolidated.com 20170621 #13:54:09Z source: RADB last-modified: 2023-11-13T15:51:14Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source