These entries are queried from radb.net using whois, you can try my project getting these.
:AS36253 route: 172.84.153.0/24 descr: Delaware County Intermediate Unit origin: AS36253 mnt-by: MAINT-AS27506 changed: daniel.mccoon [at] crowncastle.com 20210427 source: RADB last-modified: 2023-11-13T16:05:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.244.0.0/21 descr: DELAWARE COUNTY INTERMEDIATE UNIT origin: AS36253 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20140616 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.244.8.0/23 descr: DELAWARE COUNTY INTERMEDIATE UNIT origin: AS36253 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20140616 source: RADB last-modified: 2023-11-13T15:46:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.13.204.0/22 descr: NET-DCIU-A Delaware County Intermediate Unit 200 Yale Av, Morton PA 19070 US remarks: proxy-registered object for customer Direct inquiries to victor [at] dciu.org origin: AS36253 mnt-by: MAINT-AS6079 changed: michael.toth [at] rcn.com 20090422 source: RADB last-modified: 2023-11-13T15:39:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.13.204.0/24 descr: Zito Networks origin: AS36253 mnt-by: MAINT-AS26801 changed: skyler.blumer [at] zitomedia.com 20230301 source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source