These entries are queried from radb.net using whois, you can try my project getting these.
:AS20338 route: 199.189.208.0/21 descr: MyTelepath descr: 511 11th Ave S descr: PO Box 312 descr: Minneapolis, MN 55415 descr: US origin: AS20338 member-of: rs-mytelepath mnt-by: MNT-MYTEL changed: support [at] mytelepath.com 20190109 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source