These entries are queried from radb.net using whois, you can try my project getting these.
:AS37331 route: 197.220.128.0/19 descr: Proxy-registered route object origin: AS37331 remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact ipnetpeering [at] telkom.co.za if you have any remarks: questions regarding this object. mnt-by: MAINT-SAIX changed: pieter [at] saix.net 20130821 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:fd00::/32 origin: AS37331 descr: NUL-net-IPv6-Aggregate mnt-by: NUL-MNT changed: *** [at] nul.ls 20211014 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source