These entries are queried from radb.net using whois, you can try my project getting these.
:AS396515 route: 192.75.191.0/24 descr: Calgary Internet Exchange origin: AS396515 remarks: Calgary Internet Exchange mnt-by: MAINT-JOB changed: job [at] ntt.net 20170723 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source