These entries are queried from radb.net using whois, you can try my project getting these.
:AS22372 route: 173.212.86.0/24 descr: Halifax International Airport Authority origin: AS22372 remarks: Proxy route entry added on behalf of customer notify: radb-admin [at] eastlink.ca mnt-by: MAINT-AS11260 changed: larry.brinton [at] corp.eastlink.ca 20111209 #18:59:29Z source: RADB last-modified: 2023-11-13T15:41:55Z rpki-ov-state: valid