These entries are queried from radb.net using whois, you can try my project getting these.
:AS33952 route: 192.118.52.0/22 descr: Proxy-registered route object origin: AS33952 remarks: This route object is for a BtN customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was created because no existing remarks: route object with the same origin was found, and remarks: since some BtN peers filter based on these objects remarks: this route may be rejected if this object is not created. remarks: remarks: Please contact peering [at] cais.net if you have any remarks: questions regarding this object. mnt-by: MAINT-AS3491 changed: sajwani [at] pccwbtn.com 20051027 source: RADB last-modified: 2023-11-13T15:42:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source