These entries are queried from radb.net using whois, you can try my project getting these.
:AS393638 route: 192.189.81.0/24 descr: City of Mesquite Texas (CITYOF-5) origin: AS393638 mnt-by: MAINT-AS6922 changed: pete [at] ots.utsystem.edu 20141215 #20:11:57Z source: RADB last-modified: 2023-11-13T15:47:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:bd:c000::/48 descr: RR-RC-City of Mesquite Texas origin: AS393638 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-RR changed: PublicIPAdressing [at] charter.com 20230721 source: RADB last-modified: 2023-11-13T16:17:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source